Built 2026-10-16 (16 October 2026)

Hillsboro Weather Records (USC00414182)

Record envelope, standing records and threshold days for Hillsboro (USC00414182), Texas, United States, with 124 years of record.

Key Facts for Hillsboro

  • Hillsboro (USC00414182) is a weather station in Texas, United States at 32.02 latitude and -97.11 longitude, 168 m (550 ft) above sea level.
  • The station reports from 1903 to 2026, 124 years of record.
  • 1,464 records set at Hillsboro still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Hillsboro set a daily record precipitation of 11.7 mm (0.5 in) on 3 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Texas, United States, 32.02 latitude, -97.11 longitude.
  • Elevation: 168 m (550 ft).
  • Period of record: 1903 to 2026, 124 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

18 days at or beyond a record
Daily record high and record low at Hillsboro, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hillsboro. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Hillsboro. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Hillsboro, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan31.7 C (89.1 F)-18.3 C (-0.9 F)29.4 C (84.9 F)-10.0 C (14.0 F)
Feb36.1 C (97.0 F)-18.3 C (-0.9 F)32.2 C (90.0 F)-5.6 C (21.9 F)
Mar37.8 C (100.0 F)-11.1 C (12.0 F)35.6 C (96.1 F)-0.6 C (30.9 F)
Apr38.3 C (100.9 F)-3.3 C (26.1 F)33.9 C (93.0 F)5.0 C (41.0 F)
May40.0 C (104.0 F)2.2 C (36.0 F)33.9 C (93.0 F)7.8 C (46.0 F)
Jun42.8 C (109.0 F)8.9 C (48.0 F)36.7 C (98.1 F)21.1 C (70.0 F)
Jul45.0 C (113.0 F)12.8 C (55.0 F)41.7 C (107.1 F)21.1 C (70.0 F)
Aug44.4 C (111.9 F)11.7 C (53.1 F)43.3 C (109.9 F)19.4 C (66.9 F)
Sep43.3 C (109.9 F)3.3 C (37.9 F)39.4 C (102.9 F)21.7 C (71.1 F)
Oct39.4 C (102.9 F)-6.1 C (21.0 F)33.3 C (91.9 F)13.9 C (57.0 F)
Nov33.9 C (93.0 F)-10.0 C (14.0 F)n/an/a
Dec32.2 C (90.0 F)-21.1 C (-6.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Hillsboro by the year they were set 1,464 records at Hillsboro still stand. 2011 holds the most, with 39. 0102030401903: 91904: 121905: 171906: 91907: 151908: 31909: 81910: 121911: 371912: 141913: 291914: 151915: 181916: 141917: 321918: 171919: 101920: 201921: 131922: 71923: 111924: 251925: 251926: 101927: 201928: 101929: 141930: 131931: 111932: 171933: 351934: 191935: 121936: 201937: 161938: 111939: 111940: 141941: 71942: 51943: 101944: 41945: 51946: 101947: 91948: 91949: 21950: 61951: 121952: 121953: 101954: 71955: 81956: 131957: 91958: 61959: 81960: 91961: 131962: 71963: 151964: 101965: 101966: 131967: 161968: 61969: 51970: 131971: 131972: 51973: 11974: 151975: 91976: 181977: 81978: 91979: 61980: 31981: 91982: 71983: 181984: 101985: 131986: 111987: 91988: 41989: 241990: 91991: 121992: 91993: 31994: 61995: 61996: 121997: 61998: 71999: 32000: 112001: 62002: 62003: 62004: 52005: 152006: 162007: 22008: 52009: 92010: 52011: 392012: 142013: 222014: 92015: 52016: 102017: 122018: 112019: 102020: 52021: 142022: 142023: 282024: 112025: 172026: 181903191619291942195519681981199420072020
1,464 records at Hillsboro still stand. 2011 holds the most, with 39.
Standing records at Hillsboro by the year they were set
Year setStanding records
19039
190412
190517
19069
190715
19083
19098
191012
191137
191214
191329
191415
191518
191614
191732
191817
191910
192020
192113
19227
192311
192425
192525
192610
192720
192810
192914
193013
193111
193217
193335
193419
193512
193620
193716
193811
193911
194014
19417
19425
194310
19444
19455
194610
19479
19489
19492
19506
195112
195212
195310
19547
19558
195613
19579
19586
19598
19609
196113
19627
196315
196410
196510
196613
196716
19686
19695
197013
197113
19725
19731
197415
19759
197618
19778
19789
19796
19803
19819
19827
198318
198410
198513
198611
19879
19884
198924
19909
199112
19929
19933
19946
19956
199612
19976
19987
19993
200011
20016
20026
20036
20045
200515
200616
20072
20085
20099
20105
201139
201214
201322
20149
20155
201610
201712
201811
201910
20205
202114
202214
202328
202411
202517
202618

All-Time Record Progression

6 new records
When Hillsboro set new all-time records 6 all-time records were set at Hillsboro between 15 June 1935 and 23 December 1989. Each dot is a new record. Record daily precipitationRecord high minimum temperatureRecord low minimum temperature15 June 1935: Record daily precipitation 200.7 mm (7.9 in)9 July 1935: Record high minimum temperature 28.9 C (84.0 F)27 September 1936: Record daily precipitation 287.0 mm (11.3 in)23 August 1985: Record high minimum temperature 30.0 C (86.0 F)24 August 1989: Record high minimum temperature 31.1 C (88.0 F)23 December 1989: Record low minimum temperature -21.1 C (-6.0 F)194019501960197019801990
6 all-time records were set at Hillsboro between 15 June 1935 and 23 December 1989. Each dot is a new record.
When Hillsboro set new all-time records
DateKindDetail
1935-06-15Record daily precipitationRecord daily precipitation 200.7 mm (7.9 in)
1935-07-09Record high minimum temperatureRecord high minimum temperature 28.9 C (84.0 F)
1936-09-27Record daily precipitationRecord daily precipitation 287.0 mm (11.3 in)
1985-08-23Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)
1989-08-24Record high minimum temperatureRecord high minimum temperature 31.1 C (88.0 F)
1989-12-23Record low minimum temperatureRecord low minimum temperature -21.1 C (-6.0 F)

Wettest Day of Each Month

Sep: 287.0 mm (11.3 in)
Record daily precipitation for each month at Hillsboro The wettest day on record for each calendar month at Hillsboro. The most was 287.0 mm (11.3 in) on 27 September 1936. 0100200300 Jan: 110.5 mm (4.4 in), 17 January 1926 Jan Feb: 79.2 mm (3.1 in), 18 February 1938 Feb Mar: 159.0 mm (6.3 in), 30 March 2007 Mar Apr: 133.4 mm (5.3 in), 4 April 1922 Apr May: 141.0 mm (5.6 in), 2 May 1944 May Jun: 200.7 mm (7.9 in), 15 June 1935 Jun Jul: 165.4 mm (6.5 in), 4 July 1976 Jul Aug: 177.8 mm (7.0 in), 18 August 1915 Aug Sep: 287.0 mm (11.3 in), 27 September 1936 Sep Oct: 213.4 mm (8.4 in), 24 October 2015 Oct Nov: 121.9 mm (4.8 in), 8 November 1918 Nov Dec: 150.1 mm (5.9 in), 21 December 1997 Dec
The wettest day on record for each calendar month at Hillsboro. The most was 287.0 mm (11.3 in) on 27 September 1936.
Record daily precipitation for each month at Hillsboro
MonthRecord daily precipitation (mm)Date
Jan110.5 mm (4.4 in)17 January 1926
Feb79.2 mm (3.1 in)18 February 1938
Mar159.0 mm (6.3 in)30 March 2007
Apr133.4 mm (5.3 in)4 April 1922
May141.0 mm (5.6 in)2 May 1944
Jun200.7 mm (7.9 in)15 June 1935
Jul165.4 mm (6.5 in)4 July 1976
Aug177.8 mm (7.0 in)18 August 1915
Sep287.0 mm (11.3 in)27 September 1936
Oct213.4 mm (8.4 in)24 October 2015
Nov121.9 mm (4.8 in)8 November 1918
Dec150.1 mm (5.9 in)21 December 1997

Period of Record Coverage

1903 to 2026
Days with data per year at Hillsboro 124 years of record at Hillsboro, 1903 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1903, 1907, 1908, 1909, 1948, 1949, 1950, 1951 and others. 1903: 213 of 365 days1904: 358 of 366 days1905: 362 of 365 days1906: 361 of 365 days1907: 243 of 365 days1908: 85 of 366 days1909: 301 of 365 days1910: 333 of 365 days1911: 364 of 365 days1912: 362 of 366 days1913: 364 of 365 days1914: 357 of 365 days1915: 361 of 365 days1916: 360 of 366 days1917: 356 of 365 days1918: 358 of 365 days1919: 355 of 365 days1920: 361 of 366 days1921: 357 of 365 days1922: 346 of 365 days1923: 354 of 365 days1924: 359 of 366 days1925: 357 of 365 days1926: 357 of 365 days1927: 350 of 365 days1928: 361 of 366 days1929: 362 of 365 days1930: 361 of 365 days1931: 363 of 365 days1932: 359 of 366 days1933: 356 of 365 days1934: 356 of 365 days1935: 353 of 365 days1936: 357 of 366 days1937: 353 of 365 days1938: 357 of 365 days1939: 356 of 365 days1940: 359 of 366 days1941: 362 of 365 days1942: 350 of 365 days1943: 345 of 365 days1944: 343 of 366 days1945: 338 of 365 days1946: 342 of 365 days1947: 346 of 365 days1948: 305 of 366 days1949: 181 of 365 days1950: 51 of 365 days1951: 319 of 365 days1952: 361 of 366 days1953: 353 of 365 days1954: 351 of 365 days1955: 247 of 365 days1956: 330 of 366 days1957: 345 of 365 days1958: 335 of 365 days1959: 362 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 364 of 365 days1970: 364 of 365 days1971: 364 of 365 days1972: 363 of 366 days1973: 365 of 365 days1974: 334 of 365 days1975: 334 of 365 days1976: 365 of 366 days1977: 365 of 365 days1978: 361 of 365 days1979: 362 of 365 days1980: 358 of 366 days1981: 361 of 365 days1982: 312 of 365 days1983: 316 of 365 days1984: 336 of 366 days1985: 308 of 365 days1986: 329 of 365 days1987: 336 of 365 days1988: 347 of 366 days1989: 329 of 365 days1990: 358 of 365 days1991: 362 of 365 days1992: 359 of 366 days1993: 360 of 365 days1994: 360 of 365 days1995: 353 of 365 days1996: 306 of 366 days1997: 308 of 365 days1998: 287 of 365 days1999: 324 of 365 days2000: 310 of 366 days2001: 330 of 365 days2002: 315 of 365 days2003: 318 of 365 days2004: 297 of 366 days2005: 351 of 365 days2006: 365 of 365 days2007: 171 of 365 days2008: 329 of 366 days2009: 334 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 364 of 365 days2019: 365 of 365 days2020: 351 of 366 days2021: 354 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 364 of 365 days2026: 272 of 365 days192019401960198020002020
124 years of record at Hillsboro, 1903 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1903, 1907, 1908, 1909, 1948, 1949, 1950, 1951 and others.
Days with data per year at Hillsboro
YearDays with dataShare of yearComplete
190321358%No
190435898%Yes
190536299%Yes
190636199%Yes
190724367%No
19088523%No
190930182%No
191033391%Yes
1911364100%Yes
191236299%Yes
1913364100%Yes
191435798%Yes
191536199%Yes
191636098%Yes
191735698%Yes
191835898%Yes
191935597%Yes
192036199%Yes
192135798%Yes
192234695%Yes
192335497%Yes
192435998%Yes
192535798%Yes
192635798%Yes
192735096%Yes
192836199%Yes
192936299%Yes
193036199%Yes
193136399%Yes
193235998%Yes
193335698%Yes
193435698%Yes
193535397%Yes
193635798%Yes
193735397%Yes
193835798%Yes
193935698%Yes
194035998%Yes
194136299%Yes
194235096%Yes
194334595%Yes
194434394%Yes
194533893%Yes
194634294%Yes
194734695%Yes
194830583%No
194918150%No
19505114%No
195131987%No
195236199%Yes
195335397%Yes
195435196%Yes
195524768%No
195633090%Yes
195734595%Yes
195833592%Yes
195936299%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
196636399%Yes
1967365100%Yes
1968366100%Yes
1969364100%Yes
1970364100%Yes
1971364100%Yes
197236399%Yes
1973365100%Yes
197433492%Yes
197533492%Yes
1976365100%Yes
1977365100%Yes
197836199%Yes
197936299%Yes
198035898%Yes
198136199%Yes
198231285%No
198331687%No
198433692%Yes
198530884%No
198632990%Yes
198733692%Yes
198834795%Yes
198932990%Yes
199035898%Yes
199136299%Yes
199235998%Yes
199336099%Yes
199436099%Yes
199535397%Yes
199630684%No
199730884%No
199828779%No
199932489%No
200031085%No
200133090%Yes
200231586%No
200331887%No
200429781%No
200535196%Yes
2006365100%Yes
200717147%No
200832990%No
200933492%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018364100%Yes
2019365100%Yes
202035196%Yes
202135497%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025364100%Yes
202627275%No

Latest Records

20
Latest records at Hillsboro
DateStationRecordValueBeat old record byOld record stoodSignificance
3 October 2026Hillsboro, USdaily rain (Provisional)11.7 mm (0.5 in)0.5 mm (0.02 in)64 years20 of 100 (Routine)
27 September 2026Hillsboro, USdaily high max (Tie, Provisional)39.4 C (102.9 F)tie20 years4 of 100 (Routine)
23 September 2026Hillsboro, USdaily high max (Provisional)38.3 C (100.9 F)1.1 C (2.0 F)4 years13 of 100 (Routine)
17 September 2026Hillsboro, USdaily high min (Provisional)25.6 C (78.1 F)0.6 C (1.1 F)20 years17 of 100 (Routine)
17 September 2026Hillsboro, USdaily high max (Tie, Provisional)38.3 C (100.9 F)tie115 years10 of 100 (Routine)
16 September 2026Hillsboro, USdaily high max (Provisional)38.9 C (102.0 F)0.6 C (1.1 F)115 years41 of 100 (Notable)
16 September 2026Hillsboro, USdaily high min (Provisional)25.6 C (78.1 F)1.2 C (2.2 F)48 years26 of 100 (Routine)
15 September 2026Hillsboro, USdaily high min (Tie, Provisional)25.0 C (77.0 F)tie104 years10 of 100 (Routine)
11 September 2026Hillsboro, USdaily high min (Tie, Provisional)25.0 C (77.0 F)tie115 years10 of 100 (Routine)
9 September 2026Hillsboro, USdaily high min (Provisional)26.1 C (79.0 F)0.5 C (0.9 F)3 years11 of 100 (Routine)
4 September 2026Hillsboro, USdaily high min (Tie, Provisional)25.6 C (78.1 F)tie61 years7 of 100 (Routine)
26 August 2026Hillsboro, USdaily high min (Provisional)27.2 C (81.0 F)1.6 C (2.9 F)104 years47 of 100 (Notable)
25 August 2026Hillsboro, USdaily high min (Provisional)26.7 C (80.1 F)0.6 C (1.1 F)15 years16 of 100 (Routine)
25 August 2026Hillsboro, USdaily high max (Tie, Provisional)42.2 C (108.0 F)tie3 years2 of 100 (Routine)
24 August 2026Hillsboro, USdaily high max (Tie, Provisional)42.8 C (109.0 F)tie16 years3 of 100 (Routine)
23 August 2026Hillsboro, USdaily high max (Provisional)43.3 C (109.9 F)1.6 C (2.9 F)89 years41 of 100 (Notable)
15 August 2026Hillsboro, USdaily high min (Tie)26.7 C (80.1 F)tie69 years7 of 100 (Routine)
1 August 2026Hillsboro, USdaily high min (Tie)26.7 C (80.1 F)tie68 years7 of 100 (Routine)
24 July 2026Hillsboro, USdaily high min (Tie)26.7 C (80.1 F)tie8 years3 of 100 (Routine)
23 July 2026Hillsboro, USdaily high min (Tie)26.1 C (79.0 F)tie24 years4 of 100 (Routine)

Climate Trend

104 complete years, 1904 to 2025
Annual mean temperature at Hillsboro as warming stripes, 1904 to 2025 One stripe for each of 104 complete years at Hillsboro, 1904 to 2025. Blue stripes are years cooler than the station's own mean of 19.0 C (66.3 F); red stripes are warmer. The coolest year was 1976, at 17.0 C (62.6 F), and the warmest was 1911, at 20.8 C (69.4 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1904: 18.9 C, -0.1 C from the station mean1905: 18.0 C, -1.0 C from the station mean1906: 18.5 C, -0.6 C from the station mean1911: 20.8 C, +1.7 C from the station mean1912: 19.1 C, 0.0 C from the station mean1913: 18.3 C, -0.7 C from the station mean1914: 18.2 C, -0.9 C from the station mean1915: 18.7 C, -0.3 C from the station mean1916: 19.1 C, 0.0 C from the station mean1917: 18.5 C, -0.5 C from the station mean1918: 18.8 C, -0.2 C from the station mean1919: 18.0 C, -1.1 C from the station mean1920: 18.2 C, -0.9 C from the station mean1921: 19.9 C, +0.9 C from the station mean1922: 19.5 C, +0.5 C from the station mean1923: 18.9 C, -0.1 C from the station mean1924: 17.8 C, -1.3 C from the station mean1925: 19.5 C, +0.5 C from the station mean1926: 18.2 C, -0.8 C from the station mean1927: 19.7 C, +0.7 C from the station mean1928: 19.0 C, -0.1 C from the station mean1929: 18.5 C, -0.6 C from the station mean1930: 18.8 C, -0.2 C from the station mean1931: 19.7 C, +0.6 C from the station mean1932: 18.7 C, -0.3 C from the station mean1933: 20.6 C, +1.5 C from the station mean1934: 20.2 C, +1.2 C from the station mean1935: 19.2 C, +0.1 C from the station mean1936: 19.1 C, 0.0 C from the station mean1937: 18.7 C, -0.3 C from the station mean1938: 19.7 C, +0.6 C from the station mean1939: 19.8 C, +0.7 C from the station mean1940: 17.9 C, -1.2 C from the station mean1941: 19.0 C, -0.1 C from the station mean1942: 18.6 C, -0.4 C from the station mean1943: 19.2 C, +0.1 C from the station mean1944: 19.2 C, +0.2 C from the station mean1945: 19.2 C, +0.1 C from the station mean1946: 19.9 C, +0.9 C from the station mean1951: 19.7 C, +0.6 C from the station mean1952: 18.8 C, -0.3 C from the station mean1953: 19.4 C, +0.3 C from the station mean1954: 20.1 C, +1.1 C from the station mean1956: 20.0 C, +0.9 C from the station mean1957: 19.1 C, +0.1 C from the station mean1958: 18.5 C, -0.6 C from the station mean1959: 18.6 C, -0.5 C from the station mean1960: 18.8 C, -0.2 C from the station mean1961: 18.5 C, -0.6 C from the station mean1962: 19.2 C, +0.1 C from the station mean1963: 19.3 C, +0.2 C from the station mean1964: 18.6 C, -0.4 C from the station mean1965: 18.8 C, -0.2 C from the station mean1966: 18.0 C, -1.0 C from the station mean1967: 18.4 C, -0.6 C from the station mean1968: 17.4 C, -1.7 C from the station mean1969: 18.2 C, -0.8 C from the station mean1970: 17.8 C, -1.2 C from the station mean1971: 18.8 C, -0.2 C from the station mean1972: 18.4 C, -0.7 C from the station mean1973: 18.0 C, -1.0 C from the station mean1976: 17.0 C, -2.1 C from the station mean1977: 19.3 C, +0.2 C from the station mean1978: 18.7 C, -0.4 C from the station mean1979: 17.7 C, -1.3 C from the station mean1980: 19.0 C, -0.1 C from the station mean1981: 19.3 C, +0.3 C from the station mean1982: 19.0 C, 0.0 C from the station mean1983: 17.8 C, -1.2 C from the station mean1984: 19.5 C, +0.5 C from the station mean1985: 19.0 C, 0.0 C from the station mean1986: 19.5 C, +0.4 C from the station mean1987: 18.8 C, -0.2 C from the station mean1988: 19.2 C, +0.1 C from the station mean1990: 19.9 C, +0.8 C from the station mean1991: 19.1 C, 0.0 C from the station mean1992: 18.7 C, -0.3 C from the station mean1993: 18.4 C, -0.7 C from the station mean1994: 19.2 C, +0.1 C from the station mean1995: 19.2 C, +0.1 C from the station mean1996: 19.5 C, +0.5 C from the station mean1997: 18.7 C, -0.3 C from the station mean1999: 20.5 C, +1.4 C from the station mean2000: 19.9 C, +0.9 C from the station mean2001: 19.2 C, +0.2 C from the station mean2002: 18.8 C, -0.2 C from the station mean2003: 19.2 C, +0.2 C from the station mean2005: 19.0 C, 0.0 C from the station mean2006: 19.5 C, +0.4 C from the station mean2010: 18.9 C, -0.2 C from the station mean2011: 20.1 C, +1.1 C from the station mean2012: 20.3 C, +1.2 C from the station mean2013: 18.7 C, -0.4 C from the station mean2014: 18.5 C, -0.6 C from the station mean2015: 19.1 C, +0.1 C from the station mean2016: 19.9 C, +0.8 C from the station mean2017: 20.0 C, +1.0 C from the station mean2018: 19.3 C, +0.2 C from the station mean2019: 19.0 C, -0.1 C from the station mean2021: 19.3 C, +0.3 C from the station mean2022: 19.8 C, +0.8 C from the station mean2023: 20.8 C, +1.7 C from the station mean2024: 20.6 C, +1.6 C from the station mean2025: 20.1 C, +1.0 C from the station mean1904191019201930194019501960197019801990200020102020
One stripe for each of 104 complete years at Hillsboro, 1904 to 2025. Blue stripes are years cooler than the station's own mean of 19.0 C (66.3 F); red stripes are warmer. The coolest year was 1976, at 17.0 C (62.6 F), and the warmest was 1911, at 20.8 C (69.4 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Hillsboro as warming stripes, 1904 to 2025
YearAnnual mean temperatureDifference from the station mean
190418.9 C-0.11 C
190518.0 C-1.01 C
190618.5 C-0.56 C
191120.8 C+1.74 C
191219.1 C+0.01 C
191318.3 C-0.73 C
191418.2 C-0.85 C
191518.7 C-0.33 C
191619.1 C+0.03 C
191718.5 C-0.51 C
191818.8 C-0.21 C
191918.0 C-1.09 C
192018.2 C-0.88 C
192119.9 C+0.87 C
192219.5 C+0.49 C
192318.9 C-0.14 C
192417.8 C-1.29 C
192519.5 C+0.46 C
192618.2 C-0.81 C
192719.7 C+0.68 C
192819.0 C-0.09 C
192918.5 C-0.56 C
193018.8 C-0.21 C
193119.7 C+0.61 C
193218.7 C-0.33 C
193320.6 C+1.55 C
193420.2 C+1.20 C
193519.2 C+0.15 C
193619.1 C+0.02 C
193718.7 C-0.33 C
193819.7 C+0.65 C
193919.8 C+0.72 C
194017.9 C-1.18 C
194119.0 C-0.09 C
194218.6 C-0.40 C
194319.2 C+0.11 C
194419.2 C+0.19 C
194519.2 C+0.12 C
194619.9 C+0.86 C
195119.7 C+0.64 C
195218.8 C-0.25 C
195319.4 C+0.35 C
195420.1 C+1.08 C
195620.0 C+0.91 C
195719.1 C+0.07 C
195818.5 C-0.59 C
195918.6 C-0.48 C
196018.8 C-0.24 C
196118.5 C-0.58 C
196219.2 C+0.15 C
196319.3 C+0.22 C
196418.6 C-0.41 C
196518.8 C-0.21 C
196618.0 C-1.03 C
196718.4 C-0.63 C
196817.4 C-1.69 C
196918.2 C-0.83 C
197017.8 C-1.22 C
197118.8 C-0.24 C
197218.4 C-0.67 C
197318.0 C-1.00 C
197617.0 C-2.05 C
197719.3 C+0.21 C
197818.7 C-0.38 C
197917.7 C-1.30 C
198019.0 C-0.07 C
198119.3 C+0.30 C
198219.0 C-0.03 C
198317.8 C-1.20 C
198419.5 C+0.48 C
198519.0 C-0.03 C
198619.5 C+0.43 C
198718.8 C-0.22 C
198819.2 C+0.13 C
199019.9 C+0.83 C
199119.1 C+0.01 C
199218.7 C-0.32 C
199318.4 C-0.66 C
199419.2 C+0.15 C
199519.2 C+0.12 C
199619.5 C+0.48 C
199718.7 C-0.31 C
199920.5 C+1.43 C
200019.9 C+0.88 C
200119.2 C+0.19 C
200218.8 C-0.20 C
200319.2 C+0.19 C
200519.0 C-0.03 C
200619.5 C+0.41 C
201018.9 C-0.19 C
201120.1 C+1.10 C
201220.3 C+1.21 C
201318.7 C-0.37 C
201418.5 C-0.57 C
201519.1 C+0.10 C
201619.9 C+0.84 C
201720.0 C+0.96 C
201819.3 C+0.22 C
201919.0 C-0.09 C
202119.3 C+0.27 C
202219.8 C+0.77 C
202320.8 C+1.73 C
202420.6 C+1.57 C
202520.1 C+1.02 C

The annual mean temperature here has risen by 0.05 C (0.01 to 0.09) per decade over 1904 to 2025. In Fahrenheit: 0.09 F (0.01 to 0.16) per decade. The slope is a straight line fitted to 104 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hillsboro
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.05 C (0.01 to 0.09) per decade0.09 F (0.01 to 0.16) per decade1904 to 2025104Rise
Mean daily maximum-0.02 C (-0.08 to 0.03) per decade-0.05 F (-0.15 to 0.06) per decade1904 to 2025104Not clearly different from zero
Mean daily minimum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1904 to 2025104Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1903 to 2026
Yearly extremes at Hillsboro: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.0 C (113.0 F)191740.6 C (105.1 F)124
Coldest night (TNn)-21.1 C (-6.0 F)1989-10.0 C (14.0 F)124
Wettest day (Rx1day)287.0 mm (11.3 in)193680.7 mm (3.2 in)124
Wettest five days (Rx5day)394.9 mm (15.5 in)1936118.4 mm (4.7 in)124
Longest dry spell (CDD)63 days191133 days124

Hottest day (TXx)

Hottest day (TXx) at Hillsboro by year The hottest day of the year at Hillsboro, 1903 to 2026. The record is 45.0 C (113.0 F) in 1917, marked on the chart; the median year is 40.6 C (105.1 F). 30354045192019401960198020002020Record: 45.0 C (113.0 F) in 1917
The hottest day of the year at Hillsboro, 1903 to 2026. The record is 45.0 C (113.0 F) in 1917, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Hillsboro by year
YearHottest day (TXx)
190337.8 C (100.0 F)
190438.3 C (100.9 F)
190537.2 C (99.0 F)
190638.3 C (100.9 F)
190740.0 C (104.0 F)
190837.8 C (100.0 F)
190942.8 C (109.0 F)
191041.7 C (107.1 F)
191139.4 C (102.9 F)
191239.4 C (102.9 F)
191342.2 C (108.0 F)
191442.2 C (108.0 F)
191541.7 C (107.1 F)
191641.1 C (106.0 F)
191745.0 C (113.0 F)
191842.2 C (108.0 F)
191939.4 C (102.9 F)
192039.4 C (102.9 F)
192140.6 C (105.1 F)
192241.7 C (107.1 F)
192342.8 C (109.0 F)
192442.2 C (108.0 F)
192543.9 C (111.0 F)
192640.6 C (105.1 F)
192740.0 C (104.0 F)
192840.6 C (105.1 F)
192942.8 C (109.0 F)
193042.2 C (108.0 F)
193141.1 C (106.0 F)
193240.6 C (105.1 F)
193343.3 C (109.9 F)
193442.2 C (108.0 F)
193543.9 C (111.0 F)
193644.4 C (111.9 F)
193741.7 C (107.1 F)
193839.4 C (102.9 F)
193943.3 C (109.9 F)
194040.0 C (104.0 F)
194140.6 C (105.1 F)
194240.0 C (104.0 F)
194342.8 C (109.0 F)
194440.6 C (105.1 F)
194540.6 C (105.1 F)
194641.1 C (106.0 F)
194742.8 C (109.0 F)
194841.7 C (107.1 F)
194940.0 C (104.0 F)
195030.0 C (86.0 F)
195142.2 C (108.0 F)
195241.1 C (106.0 F)
195341.7 C (107.1 F)
195443.9 C (111.0 F)
195540.6 C (105.1 F)
195642.2 C (108.0 F)
195743.3 C (109.9 F)
195840.6 C (105.1 F)
195939.4 C (102.9 F)
196041.7 C (107.1 F)
196138.9 C (102.0 F)
196242.8 C (109.0 F)
196340.0 C (104.0 F)
196441.7 C (107.1 F)
196538.9 C (102.0 F)
196638.3 C (100.9 F)
196738.9 C (102.0 F)
196837.2 C (99.0 F)
196941.7 C (107.1 F)
197039.4 C (102.9 F)
197138.9 C (102.0 F)
197239.4 C (102.9 F)
197337.2 C (99.0 F)
197440.0 C (104.0 F)
197536.7 C (98.1 F)
197639.4 C (102.9 F)
197740.0 C (104.0 F)
197841.7 C (107.1 F)
197937.2 C (99.0 F)
198041.1 C (106.0 F)
198138.3 C (100.9 F)
198239.4 C (102.9 F)
198338.9 C (102.0 F)
198441.1 C (106.0 F)
198541.1 C (106.0 F)
198640.0 C (104.0 F)
198739.4 C (102.9 F)
198840.0 C (104.0 F)
198937.2 C (99.0 F)
199040.0 C (104.0 F)
199136.7 C (98.1 F)
199236.1 C (97.0 F)
199338.3 C (100.9 F)
199438.3 C (100.9 F)
199539.4 C (102.9 F)
199639.4 C (102.9 F)
199738.3 C (100.9 F)
199841.7 C (107.1 F)
199940.0 C (104.0 F)
200042.8 C (109.0 F)
200138.9 C (102.0 F)
200238.3 C (100.9 F)
200341.1 C (106.0 F)
200437.2 C (99.0 F)
200539.4 C (102.9 F)
200639.4 C (102.9 F)
200734.4 C (93.9 F)
200840.0 C (104.0 F)
200939.4 C (102.9 F)
201042.8 C (109.0 F)
201142.8 C (109.0 F)
201242.8 C (109.0 F)
201342.2 C (108.0 F)
201443.9 C (111.0 F)
201540.6 C (105.1 F)
201641.1 C (106.0 F)
201738.3 C (100.9 F)
201843.3 C (109.9 F)
201938.9 C (102.0 F)
202040.6 C (105.1 F)
202138.3 C (100.9 F)
202241.1 C (106.0 F)
202344.4 C (111.9 F)
202440.6 C (105.1 F)
202538.9 C (102.0 F)
202643.3 C (109.9 F)

Coldest night (TNn)

Coldest night (TNn) at Hillsboro by year The coldest night of the year at Hillsboro, 1903 to 2026. The record is -21.1 C (-6.0 F) in 1989, marked on the chart; the median year is -10.0 C (14.0 F). -25-20-15-10-50192019401960198020002020Record: -21.1 C (-6.0 F) in 1989
The coldest night of the year at Hillsboro, 1903 to 2026. The record is -21.1 C (-6.0 F) in 1989, marked on the chart; the median year is -10.0 C (14.0 F).
Coldest night (TNn) at Hillsboro by year
YearColdest night (TNn)
1903-6.1 C (21.0 F)
1904-12.2 C (10.0 F)
1905-15.6 C (3.9 F)
1906-9.4 C (15.1 F)
1907-5.0 C (23.0 F)
1908-2.8 C (27.0 F)
1909-11.7 C (10.9 F)
1910-10.0 C (14.0 F)
1911-13.9 C (7.0 F)
1912-15.0 C (5.0 F)
1913-12.2 C (10.0 F)
1914-10.6 C (12.9 F)
1915-10.0 C (14.0 F)
1916-11.7 C (10.9 F)
1917-12.2 C (10.0 F)
1918-13.9 C (7.0 F)
1919-9.4 C (15.1 F)
1920-8.3 C (17.1 F)
1921-7.2 C (19.0 F)
1922-7.2 C (19.0 F)
1923-9.4 C (15.1 F)
1924-11.7 C (10.9 F)
1925-9.4 C (15.1 F)
1926-11.1 C (12.0 F)
1927-9.4 C (15.1 F)
1928-11.7 C (10.9 F)
1929-15.6 C (3.9 F)
1930-18.3 C (-0.9 F)
1931-5.0 C (23.0 F)
1932-10.6 C (12.9 F)
1933-16.1 C (3.0 F)
1934-5.6 C (21.9 F)
1935-11.7 C (10.9 F)
1936-11.7 C (10.9 F)
1937-6.7 C (19.9 F)
1938-6.7 C (19.9 F)
1939-6.7 C (19.9 F)
1940-17.2 C (1.0 F)
1941-3.9 C (25.0 F)
1942-11.1 C (12.0 F)
1943-15.0 C (5.0 F)
1944-8.9 C (16.0 F)
1945-8.3 C (17.1 F)
1946-7.2 C (19.0 F)
1947-13.3 C (8.1 F)
1948-11.1 C (12.0 F)
1949-16.7 C (1.9 F)
1950-11.7 C (10.9 F)
1951-16.7 C (1.9 F)
1952-5.6 C (21.9 F)
1953-8.9 C (16.0 F)
1954-9.4 C (15.1 F)
1955-8.3 C (17.1 F)
1956-8.9 C (16.0 F)
1957-8.3 C (17.1 F)
1958-8.9 C (16.0 F)
1959-11.7 C (10.9 F)
1960-7.2 C (19.0 F)
1961-11.7 C (10.9 F)
1962-12.8 C (9.0 F)
1963-13.9 C (7.0 F)
1964-13.9 C (7.0 F)
1965-7.8 C (18.0 F)
1966-12.2 C (10.0 F)
1967-7.2 C (19.0 F)
1968-10.6 C (12.9 F)
1969-7.8 C (18.0 F)
1970-10.6 C (12.9 F)
1971-10.6 C (12.9 F)
1972-10.6 C (12.9 F)
1973-13.3 C (8.1 F)
1974-7.8 C (18.0 F)
1975-8.9 C (16.0 F)
1976-12.8 C (9.0 F)
1977-12.2 C (10.0 F)
1978-10.6 C (12.9 F)
1979-11.7 C (10.9 F)
1980-10.6 C (12.9 F)
1981-11.1 C (12.0 F)
1982-16.7 C (1.9 F)
1983-15.0 C (5.0 F)
1984-12.2 C (10.0 F)
1985-15.6 C (3.9 F)
1986-6.1 C (21.0 F)
1987-7.2 C (19.0 F)
1988-8.9 C (16.0 F)
1989-21.1 C (-6.0 F)
1990-12.8 C (9.0 F)
1991-6.1 C (21.0 F)
1992-8.9 C (16.0 F)
1993-6.1 C (21.0 F)
1994-7.2 C (19.0 F)
1995-9.4 C (15.1 F)
1996-12.8 C (9.0 F)
1997-8.9 C (16.0 F)
1998-5.0 C (23.0 F)
1999-8.9 C (16.0 F)
2000-7.2 C (19.0 F)
2001-6.7 C (19.9 F)
2002-10.0 C (14.0 F)
2003-7.2 C (19.0 F)
2004-7.8 C (18.0 F)
2005-10.6 C (12.9 F)
2006-8.9 C (16.0 F)
2007-10.0 C (14.0 F)
2008-4.4 C (24.1 F)
2009-6.1 C (21.0 F)
2010-12.2 C (10.0 F)
2011-10.6 C (12.9 F)
2012-6.7 C (19.9 F)
2013-7.8 C (18.0 F)
2014-10.0 C (14.0 F)
2015-8.9 C (16.0 F)
2016-8.3 C (17.1 F)
2017-11.7 C (10.9 F)
2018-13.3 C (8.1 F)
2019-6.7 C (19.9 F)
2020-3.9 C (25.0 F)
2021-18.3 C (-0.9 F)
2022-11.7 C (10.9 F)
2023-3.3 C (26.1 F)
2024-11.1 C (12.0 F)
2025-9.4 C (15.1 F)
2026-10.0 C (14.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Hillsboro by year The wettest day of the year at Hillsboro, 1903 to 2026. The record is 287.0 mm (11.3 in) in 1936, marked on the chart; the median year is 80.7 mm (3.2 in). 0100200300192019401960198020002020Record: 287.0 mm (11.3 in) in 1936
The wettest day of the year at Hillsboro, 1903 to 2026. The record is 287.0 mm (11.3 in) in 1936, marked on the chart; the median year is 80.7 mm (3.2 in).
Wettest day (Rx1day) at Hillsboro by year
YearWettest day (Rx1day)
190382.6 mm (3.3 in)
190480.5 mm (3.2 in)
190581.3 mm (3.2 in)
190671.6 mm (2.8 in)
190769.9 mm (2.8 in)
1908104.1 mm (4.1 in)
190965.8 mm (2.6 in)
191066.5 mm (2.6 in)
191197.8 mm (3.9 in)
191274.4 mm (2.9 in)
1913114.8 mm (4.5 in)
191475.7 mm (3.0 in)
1915177.8 mm (7.0 in)
191688.9 mm (3.5 in)
191761.0 mm (2.4 in)
1918121.9 mm (4.8 in)
191980.0 mm (3.1 in)
192063.0 mm (2.5 in)
192156.4 mm (2.2 in)
1922133.4 mm (5.3 in)
192362.2 mm (2.4 in)
192467.3 mm (2.6 in)
192559.7 mm (2.4 in)
1926110.5 mm (4.4 in)
1927125.7 mm (4.9 in)
192869.9 mm (2.8 in)
192955.9 mm (2.2 in)
193079.2 mm (3.1 in)
193135.6 mm (1.4 in)
193250.3 mm (2.0 in)
193398.0 mm (3.9 in)
193463.0 mm (2.5 in)
1935200.7 mm (7.9 in)
1936287.0 mm (11.3 in)
193754.6 mm (2.1 in)
1938123.2 mm (4.9 in)
193959.7 mm (2.4 in)
1940119.4 mm (4.7 in)
194185.1 mm (3.4 in)
1942100.3 mm (3.9 in)
194385.9 mm (3.4 in)
1944141.0 mm (5.6 in)
1945111.3 mm (4.4 in)
194649.5 mm (1.9 in)
194757.9 mm (2.3 in)
194887.6 mm (3.4 in)
194950.8 mm (2.0 in)
195030.0 mm (1.2 in)
195180.0 mm (3.1 in)
1952108.0 mm (4.3 in)
195363.8 mm (2.5 in)
195455.9 mm (2.2 in)
195580.5 mm (3.2 in)
195652.8 mm (2.1 in)
1957122.7 mm (4.8 in)
1958100.1 mm (3.9 in)
195986.4 mm (3.4 in)
196080.8 mm (3.2 in)
196179.0 mm (3.1 in)
196294.7 mm (3.7 in)
196338.1 mm (1.5 in)
196496.5 mm (3.8 in)
196595.5 mm (3.8 in)
196678.7 mm (3.1 in)
1967103.6 mm (4.1 in)
1968113.5 mm (4.5 in)
196955.4 mm (2.2 in)
197096.5 mm (3.8 in)
197188.6 mm (3.5 in)
197251.6 mm (2.0 in)
1973102.9 mm (4.1 in)
1974101.1 mm (4.0 in)
197576.2 mm (3.0 in)
1976165.4 mm (6.5 in)
197783.6 mm (3.3 in)
197853.3 mm (2.1 in)
197958.7 mm (2.3 in)
198041.9 mm (1.6 in)
1981164.3 mm (6.5 in)
198248.3 mm (1.9 in)
198384.8 mm (3.3 in)
198461.7 mm (2.4 in)
1985118.9 mm (4.7 in)
198669.1 mm (2.7 in)
198755.4 mm (2.2 in)
198871.6 mm (2.8 in)
198968.1 mm (2.7 in)
199076.7 mm (3.0 in)
1991113.5 mm (4.5 in)
199264.0 mm (2.5 in)
1993148.3 mm (5.8 in)
199457.2 mm (2.3 in)
1995112.8 mm (4.4 in)
199684.6 mm (3.3 in)
1997150.1 mm (5.9 in)
199894.0 mm (3.7 in)
199966.5 mm (2.6 in)
2000114.3 mm (4.5 in)
200182.0 mm (3.2 in)
200279.2 mm (3.1 in)
200374.9 mm (2.9 in)
2004106.9 mm (4.2 in)
200553.3 mm (2.1 in)
200658.4 mm (2.3 in)
2007159.0 mm (6.3 in)
200878.7 mm (3.1 in)
2009110.0 mm (4.3 in)
2010109.2 mm (4.3 in)
201155.9 mm (2.2 in)
201291.7 mm (3.6 in)
2013106.9 mm (4.2 in)
201468.1 mm (2.7 in)
2015213.4 mm (8.4 in)
2016109.2 mm (4.3 in)
201761.5 mm (2.4 in)
201888.9 mm (3.5 in)
201960.7 mm (2.4 in)
202084.8 mm (3.3 in)
202185.9 mm (3.4 in)
202256.1 mm (2.2 in)
202377.0 mm (3.0 in)
202489.2 mm (3.5 in)
202587.9 mm (3.5 in)
202646.7 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Hillsboro by year The wettest five days of the year at Hillsboro, 1903 to 2026. The record is 394.9 mm (15.5 in) in 1936, marked on the chart; the median year is 118.4 mm (4.7 in). 0100200300400192019401960198020002020Record: 394.9 mm (15.5 in) in 1936
The wettest five days of the year at Hillsboro, 1903 to 2026. The record is 394.9 mm (15.5 in) in 1936, marked on the chart; the median year is 118.4 mm (4.7 in).
Wettest five days (Rx5day) at Hillsboro by year
YearWettest five days (Rx5day)
1903111.8 mm (4.4 in)
1904115.9 mm (4.6 in)
190581.3 mm (3.2 in)
1906131.3 mm (5.2 in)
190799.2 mm (3.9 in)
1908144.7 mm (5.7 in)
1909104.7 mm (4.1 in)
1910114.8 mm (4.5 in)
1911103.1 mm (4.1 in)
191297.8 mm (3.9 in)
1913254.0 mm (10.0 in)
1914159.4 mm (6.3 in)
1915205.7 mm (8.1 in)
1916118.1 mm (4.6 in)
191778.8 mm (3.1 in)
1918144.8 mm (5.7 in)
1919149.9 mm (5.9 in)
192079.5 mm (3.1 in)
192194.5 mm (3.7 in)
1922194.4 mm (7.7 in)
1923163.9 mm (6.5 in)
192485.1 mm (3.4 in)
192595.2 mm (3.7 in)
1926134.7 mm (5.3 in)
1927136.4 mm (5.4 in)
1928110.5 mm (4.4 in)
1929138.9 mm (5.5 in)
1930144.2 mm (5.7 in)
193152.1 mm (2.1 in)
1932101.4 mm (4.0 in)
1933125.2 mm (4.9 in)
1934122.0 mm (4.8 in)
1935283.8 mm (11.2 in)
1936394.9 mm (15.5 in)
193794.9 mm (3.7 in)
1938134.6 mm (5.3 in)
1939127.8 mm (5.0 in)
1940208.6 mm (8.2 in)
1941140.4 mm (5.5 in)
1942182.8 mm (7.2 in)
1943138.5 mm (5.5 in)
1944268.6 mm (10.6 in)
1945160.8 mm (6.3 in)
194685.8 mm (3.4 in)
1947106.7 mm (4.2 in)
194893.9 mm (3.7 in)
1949111.5 mm (4.4 in)
195030.0 mm (1.2 in)
1951104.9 mm (4.1 in)
1952138.0 mm (5.4 in)
1953117.3 mm (4.6 in)
195481.0 mm (3.2 in)
1955111.8 mm (4.4 in)
195689.0 mm (3.5 in)
1957191.3 mm (7.5 in)
1958169.4 mm (6.7 in)
1959118.9 mm (4.7 in)
1960109.1 mm (4.3 in)
1961105.7 mm (4.2 in)
1962117.3 mm (4.6 in)
196352.4 mm (2.1 in)
1964109.2 mm (4.3 in)
1965115.3 mm (4.5 in)
1966179.3 mm (7.1 in)
1967110.8 mm (4.4 in)
1968229.8 mm (9.0 in)
196997.1 mm (3.8 in)
1970137.4 mm (5.4 in)
1971192.1 mm (7.6 in)
197253.9 mm (2.1 in)
1973165.6 mm (6.5 in)
1974150.3 mm (5.9 in)
197584.4 mm (3.3 in)
1976240.6 mm (9.5 in)
1977168.9 mm (6.6 in)
197867.1 mm (2.6 in)
1979113.1 mm (4.5 in)
198078.2 mm (3.1 in)
1981200.6 mm (7.9 in)
198275.9 mm (3.0 in)
198384.8 mm (3.3 in)
198483.0 mm (3.3 in)
1985127.3 mm (5.0 in)
1986120.5 mm (4.7 in)
1987131.0 mm (5.2 in)
1988118.6 mm (4.7 in)
1989108.3 mm (4.3 in)
1990123.0 mm (4.8 in)
1991160.4 mm (6.3 in)
1992101.6 mm (4.0 in)
1993207.7 mm (8.2 in)
1994125.0 mm (4.9 in)
1995155.7 mm (6.1 in)
1996158.2 mm (6.2 in)
1997198.1 mm (7.8 in)
1998103.2 mm (4.1 in)
199978.7 mm (3.1 in)
2000237.3 mm (9.3 in)
200197.0 mm (3.8 in)
2002108.9 mm (4.3 in)
2003158.2 mm (6.2 in)
2004137.4 mm (5.4 in)
200582.5 mm (3.2 in)
200659.4 mm (2.3 in)
2007247.9 mm (9.8 in)
200878.7 mm (3.1 in)
2009146.9 mm (5.8 in)
2010167.9 mm (6.6 in)
2011107.7 mm (4.2 in)
2012102.7 mm (4.0 in)
2013123.8 mm (4.9 in)
2014109.0 mm (4.3 in)
2015273.9 mm (10.8 in)
2016138.8 mm (5.5 in)
201797.8 mm (3.9 in)
2018190.8 mm (7.5 in)
201988.9 mm (3.5 in)
2020130.8 mm (5.1 in)
202192.0 mm (3.6 in)
202292.4 mm (3.6 in)
202397.6 mm (3.8 in)
2024136.5 mm (5.4 in)
2025135.0 mm (5.3 in)
202693.2 mm (3.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Hillsboro by year The longest dry spell of the year at Hillsboro, 1903 to 2026. The record is 63 days in 1911, marked on the chart; the median year is 33 days. 020406080192019401960198020002020Record: 63 days in 1911
The longest dry spell of the year at Hillsboro, 1903 to 2026. The record is 63 days in 1911, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Hillsboro by year
YearLongest dry spell (CDD)
190354 days
190433 days
190524 days
190635 days
190731 days
190833 days
190937 days
191034 days
191163 days
191234 days
191330 days
191427 days
191538 days
191631 days
191733 days
191840 days
191917 days
192037 days
192145 days
192236 days
192351 days
192432 days
192545 days
192625 days
192727 days
192821 days
192933 days
193019 days
193141 days
193238 days
193347 days
193437 days
193520 days
193639 days
193723 days
193844 days
193928 days
194038 days
194116 days
194237 days
194336 days
194438 days
194539 days
194636 days
194731 days
194841 days
194925 days
195034 days
195147 days
195247 days
195341 days
195443 days
195530 days
195643 days
195731 days
195828 days
195932 days
196032 days
196120 days
196236 days
196359 days
196443 days
196531 days
196643 days
196728 days
196817 days
196941 days
197034 days
197128 days
197241 days
197334 days
197427 days
197530 days
197639 days
197729 days
197846 days
197925 days
198045 days
198134 days
198237 days
198324 days
198420 days
198522 days
198621 days
198720 days
198828 days
198928 days
199028 days
199133 days
199235 days
199339 days
199424 days
199530 days
199631 days
199757 days
199829 days
199930 days
200062 days
200145 days
200252 days
200324 days
200427 days
200525 days
200623 days
200730 days
200826 days
200923 days
201029 days
201152 days
201240 days
201333 days
201430 days
201554 days
201633 days
201733 days
201827 days
201943 days
202030 days
202125 days
202241 days
202342 days
202436 days
202528 days
202623 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

104 years with a frost

Across 104 years with a frost, the median last spring frost at Hillsboro falls on 19 March and the median first autumn frost on 13 November, which leaves a median of 241 days between them.

In 1990 to 2025 the median growing season was 243 days. That is 5 days more than in 1904 to 1937.

Fitted over all years, the growing season changes by +0.9 days per decade at this station.

Frost dates and growing season at Hillsboro
MeasureMedian, all yearsEarliest period (1904 to 1937)Recent period (1990 to 2025)Recent against earliestFitted trend
Last spring frost19 March21 March14 March7 days earlier-0.8 days per decade
First autumn frost13 November13 November13 Novemberno change+0.1 days per decade
Growing days241 days238 days243 days5 days more+0.9 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

116 years, 1904 to 2025

A day with at least 80.7 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 225.4 mm (8.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Hillsboro: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years80.7 mm (3.2 in)
5 years111.1 mm (4.4 in)
10 years134.2 mm (5.3 in)
25 years167.3 mm (6.6 in)
50 years194.9 mm (7.7 in)
100 years225.4 mm (8.9 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 116 years of values from 1904 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 287.0 mm (11.3 in) in 1936; 213.4 mm (8.4 in) in 2015; 200.7 mm (7.9 in) in 1935.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Hillsboro, at 1977 and 2005. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1977 ran 0.4 C (0.7 F) higher than in the years before (likely change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2005 ran 0.5 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Hillsboro, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1977+0.4+0.7likely5
2005-0.5-0.8likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2010 to 2025 against 1961 to 1990

Over 2010 to 2025, Hillsboro had a mean temperature of 19.6 C (67.3 F) and 958.9 mm (37.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Temple (United States, 106 km away), Somerville Dam (United States, 194 km away) and Taylor (United States, 163 km away).

Climate twins of Hillsboro: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
TempleUnited States106 km (66 mi)19.1 C (66.4 F)885.0 mm (34.8 in)0.92
Somerville DamUnited States194 km (121 mi)19.4 C (67.0 F)938.9 mm (37.0 in)0.93
TaylorUnited States163 km (101 mi)19.1 C (66.4 F)869.1 mm (34.2 in)0.95

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Hillsboro standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hillsboro threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).