Built 2026-10-15 (15 October 2026)

Flatonia 4SE Weather Records (USC00413183)

Record envelope, standing records and threshold days for Flatonia 4SE (USC00413183), Texas, United States, with 113 years of record.

Key Facts for Flatonia 4SE

  • Flatonia 4SE (USC00413183) is a weather station in Texas, United States at 29.63 latitude and -97.06 longitude, 143 m (470 ft) above sea level.
  • The station reports from 1908 to 2020, 113 years of record.
  • 1,464 records set at Flatonia 4SE still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Flatonia 4SE set a daily record high minimum temperature of 19.4 C (66.9 F) on 16 January 2020.

About the Station

  • Location: Texas, United States, 29.63 latitude, -97.06 longitude.
  • Elevation: 143 m (470 ft).
  • Period of record: 1908 to 2020, 113 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Flatonia 4SE, with 2026 drawn through them The band shows the record high and record low for each calendar day at Flatonia 4SE. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Flatonia 4SE. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Flatonia 4SE, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.2 C (90.0 F)-15.6 C (3.9 F)n/an/a
Feb37.2 C (99.0 F)-11.1 C (12.0 F)n/an/a
Mar36.7 C (98.1 F)-7.8 C (18.0 F)n/an/a
Apr37.8 C (100.0 F)-1.1 C (30.0 F)n/an/a
May39.4 C (102.9 F)6.1 C (43.0 F)n/an/a
Jun41.7 C (107.1 F)10.0 C (50.0 F)n/an/a
Jul43.3 C (109.9 F)13.9 C (57.0 F)n/an/a
Aug43.9 C (111.0 F)15.0 C (59.0 F)n/an/a
Sep42.2 C (108.0 F)5.0 C (41.0 F)n/an/a
Oct38.9 C (102.0 F)-2.8 C (27.0 F)n/an/a
Nov33.3 C (91.9 F)-7.2 C (19.0 F)n/an/a
Dec35.0 C (95.0 F)-16.1 C (3.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Flatonia 4SE by the year they were set 1,464 records at Flatonia 4SE still stand. 2014 holds the most, with 79. 0204060801908: 101909: 221910: 101911: 261912: 181913: 141914: 91915: 191916: 161917: 371918: 201919: 161920: 191921: 71922: 161923: 111924: 301925: 261926: 91927: 181928: 161929: 161930: 121931: 201932: 261933: 401934: 321935: 91936: 271937: 141938: 121939: 131940: 191941: 31942: 61943: 61944: 91945: 101946: 61947: 71948: 141949: 141950: 101951: 171952: 111953: 31954: 61955: 101956: 81957: 91958: 71959: 111960: 71961: 121962: 91963: 81964: 101965: 141966: 71967: 131968: 111969: 101970: 81971: 131972: 141973: 131974: 161975: 181976: 151977: 11978: 61979: 101980: 31981: 71982: 141983: 171984: 121985: 111986: 61987: 61988: 21989: 211990: 101991: 111992: 21993: 41994: 51995: 61996: 111997: 91998: 61999: 52000: 142001: 42002: 62003: 92004: 92005: 102006: 182007: 342008: 52009: 82010: 162011: 82012: 52013: 152014: 792015: 192016: 72017: 42018: 92019: 252020: 11908192019321944195619681980199220042016
1,464 records at Flatonia 4SE still stand. 2014 holds the most, with 79.
Standing records at Flatonia 4SE by the year they were set
Year setStanding records
190810
190922
191010
191126
191218
191314
19149
191519
191616
191737
191820
191916
192019
19217
192216
192311
192430
192526
19269
192718
192816
192916
193012
193120
193226
193340
193432
19359
193627
193714
193812
193913
194019
19413
19426
19436
19449
194510
19466
19477
194814
194914
195010
195117
195211
19533
19546
195510
19568
19579
19587
195911
19607
196112
19629
19638
196410
196514
19667
196713
196811
196910
19708
197113
197214
197313
197416
197518
197615
19771
19786
197910
19803
19817
198214
198317
198412
198511
19866
19876
19882
198921
199010
199111
19922
19934
19945
19956
199611
19979
19986
19995
200014
20014
20026
20039
20049
200510
200618
200734
20085
20098
201016
20118
20125
201315
201479
201519
20167
20174
20189
201925
20201

All-Time Record Progression

8 new records
When Flatonia 4SE set new all-time records 8 all-time records were set at Flatonia 4SE between 30 June 1940 and 17 August 2014. Each dot is a new record. Record daily precipitationRecord snow depthRecord low maximum temperatureRecord low minimum temperatureRecord high minimum temperature30 June 1940: Record daily precipitation 360.9 mm (14.2 in)30 January 1949: Record snow depth 10.2 cm (4.0 in)30 January 1951: Record low maximum temperature -6.1 C (21.0 F)12 February 1960: Record snow depth 12.7 cm (5.0 in)22 February 1964: Record snow depth 15.2 cm (6.0 in)23 December 1989: Record low minimum temperature -16.1 C (3.0 F)8 June 2007: Record high minimum temperature 30.0 C (86.0 F)17 August 2014: Record high minimum temperature 31.1 C (88.0 F)19401950196019701980199020002010
8 all-time records were set at Flatonia 4SE between 30 June 1940 and 17 August 2014. Each dot is a new record.
When Flatonia 4SE set new all-time records
DateKindDetail
1940-06-30Record daily precipitationRecord daily precipitation 360.9 mm (14.2 in)
1949-01-30Record snow depthRecord snow depth 10.2 cm (4.0 in)
1951-01-30Record low maximum temperatureRecord low maximum temperature -6.1 C (21.0 F)
1960-02-12Record snow depthRecord snow depth 12.7 cm (5.0 in)
1964-02-22Record snow depthRecord snow depth 15.2 cm (6.0 in)
1989-12-23Record low minimum temperatureRecord low minimum temperature -16.1 C (3.0 F)
2007-06-08Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)
2014-08-17Record high minimum temperatureRecord high minimum temperature 31.1 C (88.0 F)

Wettest Day of Each Month

Jun: 360.9 mm (14.2 in)
Record daily precipitation for each month at Flatonia 4SE The wettest day on record for each calendar month at Flatonia 4SE. The most was 360.9 mm (14.2 in) on 30 June 1940. 0100200300400 Jan: 114.3 mm (4.5 in), 2 January 1916 Jan Feb: 106.7 mm (4.2 in), 25 February 1949 Feb Mar: 77.7 mm (3.1 in), 5 March 1937 Mar Apr: 208.8 mm (8.2 in), 18 April 2009 Apr May: 144.8 mm (5.7 in), 12 May 1914 May Jun: 360.9 mm (14.2 in), 30 June 1940 Jun Jul: 144.8 mm (5.7 in), 16 July 1936 Jul Aug: 299.2 mm (11.8 in), 31 August 1981 Aug Sep: 241.8 mm (9.5 in), 25 September 1957 Sep Oct: 218.4 mm (8.6 in), 18 October 1998 Oct Nov: 170.2 mm (6.7 in), 18 November 2007 Nov Dec: 98.6 mm (3.9 in), 4 December 1930 Dec
The wettest day on record for each calendar month at Flatonia 4SE. The most was 360.9 mm (14.2 in) on 30 June 1940.
Record daily precipitation for each month at Flatonia 4SE
MonthRecord daily precipitation (mm)Date
Jan114.3 mm (4.5 in)2 January 1916
Feb106.7 mm (4.2 in)25 February 1949
Mar77.7 mm (3.1 in)5 March 1937
Apr208.8 mm (8.2 in)18 April 2009
May144.8 mm (5.7 in)12 May 1914
Jun360.9 mm (14.2 in)30 June 1940
Jul144.8 mm (5.7 in)16 July 1936
Aug299.2 mm (11.8 in)31 August 1981
Sep241.8 mm (9.5 in)25 September 1957
Oct218.4 mm (8.6 in)18 October 1998
Nov170.2 mm (6.7 in)18 November 2007
Dec98.6 mm (3.9 in)4 December 1930

Period of Record Coverage

1908 to 2020
Days with data per year at Flatonia 4SE 113 years of record at Flatonia 4SE, 1908 to 2020. 5 years have data for under 90 percent of days and are left out of rankings: 1921, 1934, 1964, 1973, 2020. 1908: 366 of 366 days1909: 365 of 365 days1910: 365 of 365 days1911: 365 of 365 days1912: 366 of 366 days1913: 365 of 365 days1914: 365 of 365 days1915: 364 of 365 days1916: 366 of 366 days1917: 365 of 365 days1918: 365 of 365 days1919: 363 of 365 days1920: 366 of 366 days1921: 272 of 365 days1922: 364 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 365 of 365 days1926: 364 of 365 days1927: 363 of 365 days1928: 365 of 366 days1929: 364 of 365 days1930: 363 of 365 days1931: 365 of 365 days1932: 365 of 366 days1933: 365 of 365 days1934: 304 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 365 of 365 days1938: 365 of 365 days1939: 365 of 365 days1940: 363 of 366 days1941: 365 of 365 days1942: 334 of 365 days1943: 365 of 365 days1944: 359 of 366 days1945: 357 of 365 days1946: 356 of 365 days1947: 362 of 365 days1948: 351 of 366 days1949: 363 of 365 days1950: 363 of 365 days1951: 364 of 365 days1952: 359 of 366 days1953: 365 of 365 days1954: 361 of 365 days1955: 364 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 346 of 365 days1959: 360 of 365 days1960: 336 of 366 days1961: 356 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 306 of 366 days1965: 363 of 365 days1966: 360 of 365 days1967: 340 of 365 days1968: 333 of 366 days1969: 342 of 365 days1970: 360 of 365 days1971: 330 of 365 days1972: 358 of 366 days1973: 325 of 365 days1974: 357 of 365 days1975: 356 of 365 days1976: 349 of 366 days1977: 350 of 365 days1978: 362 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 364 of 365 days1982: 360 of 365 days1983: 363 of 365 days1984: 365 of 366 days1985: 363 of 365 days1986: 363 of 365 days1987: 363 of 365 days1988: 364 of 366 days1989: 360 of 365 days1990: 360 of 365 days1991: 360 of 365 days1992: 362 of 366 days1993: 361 of 365 days1994: 364 of 365 days1995: 364 of 365 days1996: 356 of 366 days1997: 352 of 365 days1998: 363 of 365 days1999: 365 of 365 days2000: 354 of 366 days2001: 361 of 365 days2002: 364 of 365 days2003: 338 of 365 days2004: 360 of 366 days2005: 364 of 365 days2006: 363 of 365 days2007: 345 of 365 days2008: 363 of 366 days2009: 355 of 365 days2010: 359 of 365 days2011: 352 of 365 days2012: 365 of 366 days2013: 365 of 365 days2014: 364 of 365 days2015: 358 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 353 of 365 days2020: 63 of 366 days1920193519501965198019952010
113 years of record at Flatonia 4SE, 1908 to 2020. 5 years have data for under 90 percent of days and are left out of rankings: 1921, 1934, 1964, 1973, 2020.
Days with data per year at Flatonia 4SE
YearDays with dataShare of yearComplete
1908366100%Yes
1909365100%Yes
1910365100%Yes
1911365100%Yes
1912366100%Yes
1913365100%Yes
1914365100%Yes
1915364100%Yes
1916366100%Yes
1917365100%Yes
1918365100%Yes
191936399%Yes
1920366100%Yes
192127275%No
1922364100%Yes
1923365100%Yes
1924366100%Yes
1925365100%Yes
1926364100%Yes
192736399%Yes
1928365100%Yes
1929364100%Yes
193036399%Yes
1931365100%Yes
1932365100%Yes
1933365100%Yes
193430483%No
1935365100%Yes
1936366100%Yes
1937365100%Yes
1938365100%Yes
1939365100%Yes
194036399%Yes
1941365100%Yes
194233492%Yes
1943365100%Yes
194435998%Yes
194535798%Yes
194635698%Yes
194736299%Yes
194835196%Yes
194936399%Yes
195036399%Yes
1951364100%Yes
195235998%Yes
1953365100%Yes
195436199%Yes
1955364100%Yes
1956366100%Yes
1957365100%Yes
195834695%Yes
195936099%Yes
196033692%Yes
196135698%Yes
1962364100%Yes
1963365100%Yes
196430684%No
196536399%Yes
196636099%Yes
196734093%Yes
196833391%Yes
196934294%Yes
197036099%Yes
197133090%Yes
197235898%Yes
197332589%No
197435798%Yes
197535698%Yes
197634995%Yes
197735096%Yes
197836299%Yes
1979365100%Yes
1980365100%Yes
1981364100%Yes
198236099%Yes
198336399%Yes
1984365100%Yes
198536399%Yes
198636399%Yes
198736399%Yes
198836499%Yes
198936099%Yes
199036099%Yes
199136099%Yes
199236299%Yes
199336199%Yes
1994364100%Yes
1995364100%Yes
199635697%Yes
199735296%Yes
199836399%Yes
1999365100%Yes
200035497%Yes
200136199%Yes
2002364100%Yes
200333893%Yes
200436098%Yes
2005364100%Yes
200636399%Yes
200734595%Yes
200836399%Yes
200935597%Yes
201035998%Yes
201135296%Yes
2012365100%Yes
2013365100%Yes
2014364100%Yes
201535898%Yes
2016365100%Yes
2017365100%Yes
2018365100%Yes
201935397%Yes
20206317%No

Latest Records

20
Latest records at Flatonia 4SE
DateStationRecordValueBeat old record byOld record stoodSignificance
16 January 2020Flatonia 4SE, USdaily high min19.4 C (66.9 F)0.5 C (0.9 F)92 years37 of 100 (Notable)
1 December 2019Flatonia 4SE, USdaily high min (Tie)19.4 C (66.9 F)tie64 years7 of 100 (Routine)
13 November 2019Flatonia 4SE, USdaily low max4.4 C (39.9 F)1.7 C (3.1 F)98 years42 of 100 (Notable)
9 November 2019Flatonia 4SE, USdaily low max8.3 C (46.9 F)0.6 C (1.1 F)64 years30 of 100 (Routine)
1 November 2019Flatonia 4SE, USdaily low min (Tie)1.1 C (34.0 F)tie28 years4 of 100 (Routine)
4 October 2019Flatonia 4SE, USdaily high min (Tie)24.4 C (75.9 F)tie20 years4 of 100 (Routine)
3 October 2019Flatonia 4SE, USdaily high min (Tie)25.0 C (77.0 F)tie4 years2 of 100 (Routine)
1 October 2019Flatonia 4SE, USmonthly high min (Tie)27.8 C (82.0 F)tie4 years5 of 100 (Routine)
30 September 2019Flatonia 4SE, USdaily high max36.7 C (98.1 F)0.6 C (1.1 F)89 years37 of 100 (Notable)
30 September 2019Flatonia 4SE, USdaily high min28.3 C (82.9 F)0.5 C (0.9 F)4 years12 of 100 (Routine)
29 September 2019Flatonia 4SE, USdaily high min28.3 C (82.9 F)1.6 C (2.9 F)4 years15 of 100 (Routine)
28 September 2019Flatonia 4SE, USdaily high min27.2 C (81.0 F)2.2 C (4.0 F)60 years34 of 100 (Routine)
27 September 2019Flatonia 4SE, USdaily high min26.7 C (80.1 F)2.3 C (4.1 F)85 years42 of 100 (Notable)
26 September 2019Flatonia 4SE, USdaily high min26.1 C (79.0 F)1.1 C (2.0 F)13 years17 of 100 (Routine)
25 September 2019Flatonia 4SE, USdaily high min27.8 C (82.0 F)2.8 C (5.0 F)88 years44 of 100 (Notable)
24 September 2019Flatonia 4SE, USdaily high min28.9 C (84.0 F)4.5 C (8.1 F)92 years50 of 100 (Notable)
24 September 2019Flatonia 4SE, USdaily high max38.3 C (100.9 F)1.1 C (2.0 F)88 years39 of 100 (Notable)
23 September 2019Flatonia 4SE, USdaily high min27.8 C (82.0 F)1.1 C (2.0 F)60 years31 of 100 (Routine)
22 September 2019Flatonia 4SE, USdaily high min (Tie)28.9 C (84.0 F)tie4 years2 of 100 (Routine)
20 September 2019Flatonia 4SE, USdaily rain71.6 mm (2.8 in)21.3 mm (0.8 in)40 years32 of 100 (Routine)

Climate Trend

100 complete years, 1908 to 2019
Annual mean temperature at Flatonia 4SE as warming stripes, 1908 to 2019 One stripe for each of 100 complete years at Flatonia 4SE, 1908 to 2019. Blue stripes are years cooler than the station's own mean of 20.7 C (69.3 F); red stripes are warmer. The coolest year was 1979, at 19.0 C (66.2 F), and the warmest was 1933, at 22.8 C (73.1 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1908: 21.2 C, +0.5 C from the station mean1909: 21.4 C, +0.7 C from the station mean1910: 21.2 C, +0.5 C from the station mean1911: 21.6 C, +0.9 C from the station mean1912: 20.1 C, -0.7 C from the station mean1913: 20.2 C, -0.6 C from the station mean1914: 20.2 C, -0.6 C from the station mean1915: 20.9 C, +0.1 C from the station mean1916: 21.5 C, +0.8 C from the station mean1917: 20.9 C, +0.2 C from the station mean1918: 20.6 C, -0.1 C from the station mean1919: 19.9 C, -0.8 C from the station mean1920: 20.5 C, -0.2 C from the station mean1922: 21.4 C, +0.7 C from the station mean1923: 21.0 C, +0.3 C from the station mean1924: 20.4 C, -0.3 C from the station mean1925: 21.7 C, +1.0 C from the station mean1926: 20.7 C, 0.0 C from the station mean1927: 22.3 C, +1.6 C from the station mean1928: 21.3 C, +0.6 C from the station mean1929: 20.8 C, +0.1 C from the station mean1930: 20.5 C, -0.2 C from the station mean1931: 21.2 C, +0.5 C from the station mean1932: 21.0 C, +0.3 C from the station mean1933: 22.8 C, +2.1 C from the station mean1935: 21.7 C, +1.0 C from the station mean1936: 20.8 C, +0.1 C from the station mean1937: 20.5 C, -0.2 C from the station mean1938: 21.2 C, +0.5 C from the station mean1939: 21.2 C, +0.5 C from the station mean1940: 19.6 C, -1.1 C from the station mean1941: 20.1 C, -0.6 C from the station mean1943: 20.7 C, 0.0 C from the station mean1944: 20.5 C, -0.2 C from the station mean1945: 21.1 C, +0.4 C from the station mean1946: 20.9 C, +0.2 C from the station mean1947: 20.3 C, -0.5 C from the station mean1949: 21.0 C, +0.3 C from the station mean1950: 20.7 C, 0.0 C from the station mean1951: 21.2 C, +0.4 C from the station mean1952: 20.4 C, -0.3 C from the station mean1953: 20.9 C, +0.2 C from the station mean1954: 21.7 C, +1.0 C from the station mean1956: 21.6 C, +0.9 C from the station mean1957: 20.6 C, -0.1 C from the station mean1958: 19.8 C, -0.9 C from the station mean1959: 19.9 C, -0.8 C from the station mean1960: 19.8 C, -0.9 C from the station mean1961: 20.0 C, -0.7 C from the station mean1962: 20.8 C, +0.1 C from the station mean1963: 21.0 C, +0.3 C from the station mean1965: 20.4 C, -0.3 C from the station mean1966: 20.2 C, -0.5 C from the station mean1967: 21.0 C, +0.3 C from the station mean1968: 19.5 C, -1.2 C from the station mean1969: 20.8 C, +0.1 C from the station mean1970: 20.4 C, -0.4 C from the station mean1972: 20.9 C, +0.2 C from the station mean1974: 20.5 C, -0.2 C from the station mean1975: 20.5 C, -0.2 C from the station mean1976: 19.5 C, -1.2 C from the station mean1977: 20.7 C, 0.0 C from the station mean1978: 19.6 C, -1.1 C from the station mean1979: 19.0 C, -1.7 C from the station mean1980: 20.6 C, -0.2 C from the station mean1981: 20.7 C, 0.0 C from the station mean1982: 20.6 C, -0.1 C from the station mean1983: 19.7 C, -1.0 C from the station mean1984: 21.2 C, +0.4 C from the station mean1985: 20.5 C, -0.2 C from the station mean1986: 20.9 C, +0.2 C from the station mean1987: 20.2 C, -0.5 C from the station mean1988: 20.6 C, -0.1 C from the station mean1989: 20.1 C, -0.6 C from the station mean1990: 21.5 C, +0.8 C from the station mean1991: 20.5 C, -0.2 C from the station mean1992: 20.3 C, -0.4 C from the station mean1993: 19.8 C, -0.9 C from the station mean1994: 20.6 C, -0.1 C from the station mean1995: 20.5 C, -0.2 C from the station mean1996: 21.0 C, +0.3 C from the station mean1998: 21.5 C, +0.7 C from the station mean1999: 21.4 C, +0.7 C from the station mean2000: 20.8 C, +0.1 C from the station mean2001: 19.9 C, -0.8 C from the station mean2002: 19.9 C, -0.8 C from the station mean2004: 20.5 C, -0.2 C from the station mean2005: 22.0 C, +1.3 C from the station mean2006: 22.1 C, +1.4 C from the station mean2008: 20.8 C, 0.0 C from the station mean2009: 20.9 C, +0.1 C from the station mean2010: 19.1 C, -1.6 C from the station mean2011: 21.7 C, +1.0 C from the station mean2012: 21.4 C, +0.7 C from the station mean2013: 20.4 C, -0.3 C from the station mean2015: 21.3 C, +0.6 C from the station mean2016: 21.2 C, +0.5 C from the station mean2017: 21.1 C, +0.4 C from the station mean2018: 19.7 C, -1.0 C from the station mean2019: 20.3 C, -0.5 C from the station mean19081920193019401950196019701980199020002010
One stripe for each of 100 complete years at Flatonia 4SE, 1908 to 2019. Blue stripes are years cooler than the station's own mean of 20.7 C (69.3 F); red stripes are warmer. The coolest year was 1979, at 19.0 C (66.2 F), and the warmest was 1933, at 22.8 C (73.1 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Flatonia 4SE as warming stripes, 1908 to 2019
YearAnnual mean temperatureDifference from the station mean
190821.2 C+0.51 C
190921.4 C+0.69 C
191021.2 C+0.53 C
191121.6 C+0.88 C
191220.1 C-0.66 C
191320.2 C-0.56 C
191420.2 C-0.56 C
191520.9 C+0.14 C
191621.5 C+0.79 C
191720.9 C+0.20 C
191820.6 C-0.08 C
191919.9 C-0.79 C
192020.5 C-0.23 C
192221.4 C+0.66 C
192321.0 C+0.29 C
192420.4 C-0.28 C
192521.7 C+0.98 C
192620.7 C0.00 C
192722.3 C+1.60 C
192821.3 C+0.56 C
192920.8 C+0.06 C
193020.5 C-0.20 C
193121.2 C+0.52 C
193221.0 C+0.28 C
193322.8 C+2.11 C
193521.7 C+0.99 C
193620.8 C+0.06 C
193720.5 C-0.19 C
193821.2 C+0.53 C
193921.2 C+0.50 C
194019.6 C-1.11 C
194120.1 C-0.63 C
194320.7 C0.00 C
194420.5 C-0.23 C
194521.1 C+0.39 C
194620.9 C+0.20 C
194720.3 C-0.45 C
194921.0 C+0.31 C
195020.7 C+0.02 C
195121.2 C+0.45 C
195220.4 C-0.33 C
195320.9 C+0.16 C
195421.7 C+1.02 C
195621.6 C+0.92 C
195720.6 C-0.08 C
195819.8 C-0.94 C
195919.9 C-0.80 C
196019.8 C-0.90 C
196120.0 C-0.67 C
196220.8 C+0.10 C
196321.0 C+0.30 C
196520.4 C-0.27 C
196620.2 C-0.54 C
196721.0 C+0.27 C
196819.5 C-1.18 C
196920.8 C+0.06 C
197020.4 C-0.36 C
197220.9 C+0.21 C
197420.5 C-0.21 C
197520.5 C-0.19 C
197619.5 C-1.17 C
197720.7 C-0.03 C
197819.6 C-1.13 C
197919.0 C-1.73 C
198020.6 C-0.16 C
198120.7 C-0.04 C
198220.6 C-0.08 C
198319.7 C-1.02 C
198421.2 C+0.45 C
198520.5 C-0.21 C
198620.9 C+0.19 C
198720.2 C-0.53 C
198820.6 C-0.09 C
198920.1 C-0.61 C
199021.5 C+0.76 C
199120.5 C-0.20 C
199220.3 C-0.42 C
199319.8 C-0.89 C
199420.6 C-0.10 C
199520.5 C-0.20 C
199621.0 C+0.28 C
199821.5 C+0.74 C
199921.4 C+0.70 C
200020.8 C+0.10 C
200119.9 C-0.78 C
200219.9 C-0.83 C
200420.5 C-0.23 C
200522.0 C+1.30 C
200622.1 C+1.38 C
200820.8 C+0.05 C
200920.9 C+0.14 C
201019.1 C-1.62 C
201121.7 C+0.97 C
201221.4 C+0.71 C
201320.4 C-0.33 C
201521.3 C+0.59 C
201621.2 C+0.52 C
201721.1 C+0.36 C
201819.7 C-1.04 C
201920.3 C-0.46 C

The fitted trend in annual mean temperature here over 1908 to 2019 is -0.03 C (-0.07 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.06 F (-0.13 to 0.01) per decade. The slope is a straight line fitted to 100 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Flatonia 4SE
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.03 C (-0.07 to 0.01) per decade-0.06 F (-0.13 to 0.01) per decade1908 to 2019100Not clearly different from zero
Mean daily maximum-0.1 C (-0.2 to -0.1) per decade-0.2 F (-0.3 to -0.1) per decade1908 to 2019100Fall
Mean daily minimum0.06 C (0.01 to 0.10) per decade0.10 F (0.02 to 0.19) per decade1908 to 2019100Rise

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

1908 to 2020
Yearly extremes at Flatonia 4SE: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.9 C (111.0 F)191739.4 C (102.9 F)113
Coldest night (TNn)-16.1 C (3.0 F)1989-6.7 C (19.9 F)113
Wettest day (Rx1day)360.9 mm (14.2 in)194084.8 mm (3.3 in)113
Wettest five days (Rx5day)452.6 mm (17.8 in)1940126.0 mm (5.0 in)113
Longest dry spell (CDD)71 days196330 days113

Hottest day (TXx)

Hottest day (TXx) at Flatonia 4SE by year The hottest day of the year at Flatonia 4SE, 1908 to 2020. The record is 43.9 C (111.0 F) in 1917, marked on the chart; the median year is 39.4 C (102.9 F). 2530354045192019401960198020002020Record: 43.9 C (111.0 F) in 1917
The hottest day of the year at Flatonia 4SE, 1908 to 2020. The record is 43.9 C (111.0 F) in 1917, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Flatonia 4SE by year
YearHottest day (TXx)
190838.9 C (102.0 F)
190941.7 C (107.1 F)
191038.9 C (102.0 F)
191140.6 C (105.1 F)
191240.0 C (104.0 F)
191342.2 C (108.0 F)
191441.1 C (106.0 F)
191540.0 C (104.0 F)
191639.4 C (102.9 F)
191743.9 C (111.0 F)
191842.2 C (108.0 F)
191938.9 C (102.0 F)
192039.4 C (102.9 F)
192140.0 C (104.0 F)
192240.0 C (104.0 F)
192339.4 C (102.9 F)
192441.7 C (107.1 F)
192541.1 C (106.0 F)
192639.4 C (102.9 F)
192741.7 C (107.1 F)
192841.7 C (107.1 F)
192942.2 C (108.0 F)
193041.1 C (106.0 F)
193139.4 C (102.9 F)
193241.7 C (107.1 F)
193341.1 C (106.0 F)
193442.2 C (108.0 F)
193541.7 C (107.1 F)
193642.8 C (109.0 F)
193740.6 C (105.1 F)
193838.9 C (102.0 F)
193942.2 C (108.0 F)
194037.8 C (100.0 F)
194136.7 C (98.1 F)
194237.8 C (100.0 F)
194341.1 C (106.0 F)
194440.0 C (104.0 F)
194539.4 C (102.9 F)
194637.2 C (99.0 F)
194739.4 C (102.9 F)
194839.4 C (102.9 F)
194938.3 C (100.9 F)
195037.8 C (100.0 F)
195138.9 C (102.0 F)
195238.3 C (100.9 F)
195340.6 C (105.1 F)
195443.3 C (109.9 F)
195537.8 C (100.0 F)
195639.4 C (102.9 F)
195738.3 C (100.9 F)
195837.8 C (100.0 F)
195937.2 C (99.0 F)
196038.9 C (102.0 F)
196135.6 C (96.1 F)
196241.7 C (107.1 F)
196338.9 C (102.0 F)
196439.4 C (102.9 F)
196536.7 C (98.1 F)
196637.8 C (100.0 F)
196740.6 C (105.1 F)
196837.2 C (99.0 F)
196940.6 C (105.1 F)
197040.0 C (104.0 F)
197138.9 C (102.0 F)
197238.3 C (100.9 F)
197338.3 C (100.9 F)
197439.4 C (102.9 F)
197538.3 C (100.9 F)
197640.0 C (104.0 F)
197738.9 C (102.0 F)
197840.0 C (104.0 F)
197935.6 C (96.1 F)
198039.4 C (102.9 F)
198137.2 C (99.0 F)
198238.9 C (102.0 F)
198337.8 C (100.0 F)
198439.4 C (102.9 F)
198539.4 C (102.9 F)
198638.9 C (102.0 F)
198737.2 C (99.0 F)
198838.9 C (102.0 F)
198937.8 C (100.0 F)
199039.4 C (102.9 F)
199136.1 C (97.0 F)
199236.1 C (97.0 F)
199336.7 C (98.1 F)
199437.8 C (100.0 F)
199538.3 C (100.9 F)
199638.3 C (100.9 F)
199737.8 C (100.0 F)
199839.4 C (102.9 F)
199939.4 C (102.9 F)
200042.2 C (108.0 F)
200137.8 C (100.0 F)
200235.0 C (95.0 F)
200339.4 C (102.9 F)
200435.6 C (96.1 F)
200541.1 C (106.0 F)
200638.9 C (102.0 F)
200738.9 C (102.0 F)
200837.8 C (100.0 F)
200940.0 C (104.0 F)
201036.7 C (98.1 F)
201142.8 C (109.0 F)
201238.3 C (100.9 F)
201341.1 C (106.0 F)
201437.8 C (100.0 F)
201538.9 C (102.0 F)
201638.3 C (100.9 F)
201740.0 C (104.0 F)
201839.4 C (102.9 F)
201938.9 C (102.0 F)
202026.7 C (80.1 F)

Coldest night (TNn)

Coldest night (TNn) at Flatonia 4SE by year The coldest night of the year at Flatonia 4SE, 1908 to 2020. The record is -16.1 C (3.0 F) in 1989, marked on the chart; the median year is -6.7 C (19.9 F). -20-15-10-50192019401960198020002020Record: -16.1 C (3.0 F) in 1989
The coldest night of the year at Flatonia 4SE, 1908 to 2020. The record is -16.1 C (3.0 F) in 1989, marked on the chart; the median year is -6.7 C (19.9 F).
Coldest night (TNn) at Flatonia 4SE by year
YearColdest night (TNn)
1908-5.6 C (21.9 F)
1909-7.8 C (18.0 F)
1910-7.8 C (18.0 F)
1911-10.0 C (14.0 F)
1912-10.6 C (12.9 F)
1913-7.2 C (19.0 F)
1914-6.7 C (19.9 F)
1915-3.9 C (25.0 F)
1916-8.3 C (17.1 F)
1917-8.9 C (16.0 F)
1918-13.3 C (8.1 F)
1919-7.2 C (19.0 F)
1920-5.0 C (23.0 F)
1921-3.3 C (26.1 F)
1922-5.0 C (23.0 F)
1923-5.0 C (23.0 F)
1924-7.8 C (18.0 F)
1925-7.8 C (18.0 F)
1926-3.9 C (25.0 F)
1927-4.4 C (24.1 F)
1928-10.6 C (12.9 F)
1929-9.4 C (15.1 F)
1930-15.6 C (3.9 F)
1931-1.7 C (28.9 F)
1932-7.2 C (19.0 F)
1933-11.1 C (12.0 F)
1934-3.3 C (26.1 F)
1935-7.8 C (18.0 F)
1936-8.3 C (17.1 F)
1937-5.0 C (23.0 F)
1938-4.4 C (24.1 F)
1939-4.4 C (24.1 F)
1940-12.2 C (10.0 F)
1941-3.3 C (26.1 F)
1942-6.7 C (19.9 F)
1943-10.6 C (12.9 F)
1944-7.8 C (18.0 F)
1945-4.4 C (24.1 F)
1946-5.0 C (23.0 F)
1947-8.9 C (16.0 F)
1948-6.7 C (19.9 F)
1949-13.9 C (7.0 F)
1950-8.9 C (16.0 F)
1951-11.1 C (12.0 F)
1952-3.3 C (26.1 F)
1953-6.1 C (21.0 F)
1954-6.7 C (19.9 F)
1955-3.3 C (26.1 F)
1956-2.8 C (27.0 F)
1957-5.0 C (23.0 F)
1958-5.0 C (23.0 F)
1959-9.4 C (15.1 F)
1960-6.1 C (21.0 F)
1961-5.0 C (23.0 F)
1962-10.6 C (12.9 F)
1963-11.1 C (12.0 F)
1964-7.2 C (19.0 F)
1965-6.1 C (21.0 F)
1966-8.9 C (16.0 F)
1967-5.0 C (23.0 F)
1968-6.7 C (19.9 F)
1969-7.2 C (19.0 F)
1970-8.9 C (16.0 F)
1971-5.6 C (21.9 F)
1972-7.8 C (18.0 F)
1973-10.0 C (14.0 F)
1974-5.6 C (21.9 F)
1975-8.9 C (16.0 F)
1976-8.9 C (16.0 F)
1977-9.4 C (15.1 F)
1978-7.8 C (18.0 F)
1979-11.1 C (12.0 F)
1980-7.8 C (18.0 F)
1981-8.3 C (17.1 F)
1982-12.8 C (9.0 F)
1983-12.8 C (9.0 F)
1984-8.3 C (17.1 F)
1985-9.4 C (15.1 F)
1986-3.3 C (26.1 F)
1987-1.7 C (28.9 F)
1988-5.6 C (21.9 F)
1989-16.1 C (3.0 F)
1990-9.4 C (15.1 F)
1991-1.7 C (28.9 F)
1992-3.3 C (26.1 F)
1993-4.4 C (24.1 F)
1994-5.0 C (23.0 F)
1995-5.6 C (21.9 F)
1996-7.8 C (18.0 F)
1997-5.0 C (23.0 F)
1998-6.1 C (21.0 F)
1999-2.2 C (28.0 F)
2000-3.9 C (25.0 F)
2001-3.3 C (26.1 F)
2002-6.1 C (21.0 F)
2003-5.0 C (23.0 F)
2004-3.3 C (26.1 F)
2005-3.9 C (25.0 F)
2006-1.7 C (28.9 F)
2007-2.8 C (27.0 F)
2008-2.8 C (27.0 F)
2009-4.4 C (24.1 F)
2010-8.9 C (16.0 F)
2011-8.3 C (17.1 F)
2012-2.8 C (27.0 F)
2013-2.8 C (27.0 F)
2014-7.8 C (18.0 F)
20150.0 C (32.0 F)
2016-5.6 C (21.9 F)
2017-8.3 C (17.1 F)
2018-9.4 C (15.1 F)
2019-3.9 C (25.0 F)
2020-1.1 C (30.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Flatonia 4SE by year The wettest day of the year at Flatonia 4SE, 1908 to 2020. The record is 360.9 mm (14.2 in) in 1940, marked on the chart; the median year is 84.8 mm (3.3 in). 0100200300400192019401960198020002020Record: 360.9 mm (14.2 in) in 1940
The wettest day of the year at Flatonia 4SE, 1908 to 2020. The record is 360.9 mm (14.2 in) in 1940, marked on the chart; the median year is 84.8 mm (3.3 in).
Wettest day (Rx1day) at Flatonia 4SE by year
YearWettest day (Rx1day)
190876.2 mm (3.0 in)
1909127.0 mm (5.0 in)
191042.2 mm (1.7 in)
191179.5 mm (3.1 in)
191266.8 mm (2.6 in)
191399.8 mm (3.9 in)
1914144.8 mm (5.7 in)
1915100.3 mm (3.9 in)
1916114.3 mm (4.5 in)
191748.3 mm (1.9 in)
191897.8 mm (3.9 in)
1919116.8 mm (4.6 in)
192069.9 mm (2.8 in)
1921108.7 mm (4.3 in)
192271.1 mm (2.8 in)
192366.0 mm (2.6 in)
1924127.0 mm (5.0 in)
1925105.7 mm (4.2 in)
192663.2 mm (2.5 in)
1927104.1 mm (4.1 in)
192848.0 mm (1.9 in)
192978.7 mm (3.1 in)
193098.6 mm (3.9 in)
193145.0 mm (1.8 in)
1932170.9 mm (6.7 in)
193357.7 mm (2.3 in)
193469.1 mm (2.7 in)
1935163.1 mm (6.4 in)
1936144.8 mm (5.7 in)
193787.1 mm (3.4 in)
193847.0 mm (1.9 in)
193991.9 mm (3.6 in)
1940360.9 mm (14.2 in)
194151.1 mm (2.0 in)
194261.7 mm (2.4 in)
194376.2 mm (3.0 in)
194488.9 mm (3.5 in)
194575.7 mm (3.0 in)
194682.0 mm (3.2 in)
194774.9 mm (2.9 in)
194839.4 mm (1.6 in)
1949106.7 mm (4.2 in)
195088.9 mm (3.5 in)
195199.1 mm (3.9 in)
195278.7 mm (3.1 in)
195382.6 mm (3.3 in)
195460.5 mm (2.4 in)
195572.4 mm (2.9 in)
195668.6 mm (2.7 in)
1957241.8 mm (9.5 in)
195883.3 mm (3.3 in)
195978.2 mm (3.1 in)
1960162.6 mm (6.4 in)
1961208.3 mm (8.2 in)
196284.3 mm (3.3 in)
196352.1 mm (2.1 in)
196486.4 mm (3.4 in)
1965132.6 mm (5.2 in)
196671.6 mm (2.8 in)
1967149.9 mm (5.9 in)
1968119.4 mm (4.7 in)
196974.4 mm (2.9 in)
197066.8 mm (2.6 in)
197197.3 mm (3.8 in)
1972105.4 mm (4.1 in)
1973109.2 mm (4.3 in)
197497.0 mm (3.8 in)
197582.6 mm (3.3 in)
1976114.8 mm (4.5 in)
197781.3 mm (3.2 in)
197884.8 mm (3.3 in)
1979121.9 mm (4.8 in)
198054.9 mm (2.2 in)
1981299.2 mm (11.8 in)
1982102.9 mm (4.1 in)
198374.7 mm (2.9 in)
198484.1 mm (3.3 in)
1985144.8 mm (5.7 in)
198666.5 mm (2.6 in)
1987134.6 mm (5.3 in)
198868.8 mm (2.7 in)
198971.9 mm (2.8 in)
199037.1 mm (1.5 in)
199195.0 mm (3.7 in)
199264.8 mm (2.6 in)
199389.4 mm (3.5 in)
199463.0 mm (2.5 in)
199586.4 mm (3.4 in)
199670.4 mm (2.8 in)
1997145.3 mm (5.7 in)
1998218.4 mm (8.6 in)
199945.2 mm (1.8 in)
200093.2 mm (3.7 in)
200191.4 mm (3.6 in)
2002100.8 mm (4.0 in)
200359.7 mm (2.4 in)
200487.9 mm (3.5 in)
2005113.0 mm (4.4 in)
200654.6 mm (2.1 in)
2007170.2 mm (6.7 in)
200862.7 mm (2.5 in)
2009208.8 mm (8.2 in)
201074.9 mm (2.9 in)
201152.1 mm (2.1 in)
2012106.7 mm (4.2 in)
201399.3 mm (3.9 in)
201481.3 mm (3.2 in)
2015134.4 mm (5.3 in)
201676.5 mm (3.0 in)
2017197.4 mm (7.8 in)
201891.4 mm (3.6 in)
201971.6 mm (2.8 in)
202017.0 mm (0.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Flatonia 4SE by year The wettest five days of the year at Flatonia 4SE, 1908 to 2020. The record is 452.6 mm (17.8 in) in 1940, marked on the chart; the median year is 126.0 mm (5.0 in). 0200400600192019401960198020002020Record: 452.6 mm (17.8 in) in 1940
The wettest five days of the year at Flatonia 4SE, 1908 to 2020. The record is 452.6 mm (17.8 in) in 1940, marked on the chart; the median year is 126.0 mm (5.0 in).
Wettest five days (Rx5day) at Flatonia 4SE by year
YearWettest five days (Rx5day)
190876.2 mm (3.0 in)
1909153.4 mm (6.0 in)
191064.5 mm (2.5 in)
191191.1 mm (3.6 in)
1912104.2 mm (4.1 in)
1913157.1 mm (6.2 in)
1914159.9 mm (6.3 in)
1915193.3 mm (7.6 in)
1916120.9 mm (4.8 in)
191758.7 mm (2.3 in)
191897.8 mm (3.9 in)
1919190.7 mm (7.5 in)
1920113.1 mm (4.5 in)
1921129.8 mm (5.1 in)
192293.3 mm (3.7 in)
1923120.7 mm (4.8 in)
1924152.7 mm (6.0 in)
1925245.9 mm (9.7 in)
1926123.5 mm (4.9 in)
1927140.2 mm (5.5 in)
192887.6 mm (3.4 in)
1929163.7 mm (6.4 in)
1930110.7 mm (4.4 in)
193177.3 mm (3.0 in)
1932175.2 mm (6.9 in)
193370.1 mm (2.8 in)
193488.7 mm (3.5 in)
1935179.8 mm (7.1 in)
1936271.5 mm (10.7 in)
1937134.6 mm (5.3 in)
1938114.8 mm (4.5 in)
1939102.3 mm (4.0 in)
1940452.6 mm (17.8 in)
1941132.3 mm (5.2 in)
1942156.2 mm (6.1 in)
1943100.9 mm (4.0 in)
1944101.9 mm (4.0 in)
1945113.1 mm (4.5 in)
1946124.9 mm (4.9 in)
194777.2 mm (3.0 in)
1948100.6 mm (4.0 in)
1949176.8 mm (7.0 in)
1950119.1 mm (4.7 in)
1951135.9 mm (5.4 in)
1952109.2 mm (4.3 in)
195391.4 mm (3.6 in)
195466.8 mm (2.6 in)
1955115.5 mm (4.5 in)
1956129.6 mm (5.1 in)
1957412.2 mm (16.2 in)
1958124.2 mm (4.9 in)
1959162.0 mm (6.4 in)
1960317.5 mm (12.5 in)
1961246.6 mm (9.7 in)
1962128.3 mm (5.1 in)
196361.2 mm (2.4 in)
196491.9 mm (3.6 in)
1965158.3 mm (6.2 in)
196685.1 mm (3.4 in)
1967215.2 mm (8.5 in)
1968139.0 mm (5.5 in)
196981.0 mm (3.2 in)
197073.2 mm (2.9 in)
1971133.1 mm (5.2 in)
1972183.4 mm (7.2 in)
1973135.6 mm (5.3 in)
1974165.0 mm (6.5 in)
1975105.5 mm (4.2 in)
1976145.5 mm (5.7 in)
1977133.1 mm (5.2 in)
1978164.0 mm (6.5 in)
1979142.0 mm (5.6 in)
1980109.6 mm (4.3 in)
1981421.6 mm (16.6 in)
1982130.4 mm (5.1 in)
1983123.2 mm (4.9 in)
1984168.4 mm (6.6 in)
1985172.3 mm (6.8 in)
1986134.0 mm (5.3 in)
1987201.7 mm (7.9 in)
198868.8 mm (2.7 in)
1989114.3 mm (4.5 in)
199072.5 mm (2.9 in)
1991243.9 mm (9.6 in)
1992154.3 mm (6.1 in)
199396.5 mm (3.8 in)
1994182.5 mm (7.2 in)
1995126.0 mm (5.0 in)
199694.0 mm (3.7 in)
1997210.2 mm (8.3 in)
1998284.6 mm (11.2 in)
199981.6 mm (3.2 in)
2000120.4 mm (4.7 in)
2001232.9 mm (9.2 in)
2002163.1 mm (6.4 in)
200370.9 mm (2.8 in)
2004192.8 mm (7.6 in)
2005116.8 mm (4.6 in)
200656.2 mm (2.2 in)
2007172.7 mm (6.8 in)
200884.3 mm (3.3 in)
2009263.4 mm (10.4 in)
2010127.8 mm (5.0 in)
201160.4 mm (2.4 in)
2012141.7 mm (5.6 in)
2013104.4 mm (4.1 in)
2014118.5 mm (4.7 in)
2015218.0 mm (8.6 in)
201697.1 mm (3.8 in)
2017408.7 mm (16.1 in)
2018101.5 mm (4.0 in)
201984.8 mm (3.3 in)
202021.9 mm (0.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Flatonia 4SE by year The longest dry spell of the year at Flatonia 4SE, 1908 to 2020. The record is 71 days in 1963, marked on the chart; the median year is 30 days. 020406080192019401960198020002020Record: 71 days in 1963
The longest dry spell of the year at Flatonia 4SE, 1908 to 2020. The record is 71 days in 1963, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Flatonia 4SE by year
YearLongest dry spell (CDD)
190826 days
190943 days
191033 days
191124 days
191252 days
191325 days
191432 days
191555 days
191661 days
191743 days
191831 days
191925 days
192040 days
192138 days
192236 days
192327 days
192431 days
192542 days
192623 days
192746 days
192832 days
192928 days
193031 days
193147 days
193231 days
193329 days
193423 days
193520 days
193634 days
193731 days
193824 days
193920 days
194044 days
194120 days
194226 days
194322 days
194424 days
194535 days
194636 days
194730 days
194827 days
194919 days
195033 days
195127 days
195251 days
195330 days
195436 days
195531 days
195631 days
195733 days
195838 days
195927 days
196033 days
196122 days
196263 days
196371 days
196428 days
196522 days
196640 days
196732 days
196834 days
196925 days
197050 days
197134 days
197232 days
197323 days
197427 days
197538 days
197622 days
197724 days
197845 days
197940 days
198042 days
198120 days
198238 days
198329 days
198439 days
198535 days
198644 days
198727 days
198825 days
198926 days
199024 days
199127 days
199216 days
199339 days
199427 days
199527 days
199641 days
199736 days
199824 days
199924 days
200026 days
200135 days
200226 days
200325 days
200428 days
200536 days
200623 days
200725 days
200826 days
200934 days
201040 days
201164 days
201222 days
201321 days
201425 days
201529 days
201627 days
201721 days
201826 days
201930 days
202012 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

94 years with a frost

Across 94 years with a frost, the median last spring frost at Flatonia 4SE falls on 26 February and the median first autumn frost on 3 December, which leaves a median of 281 days between them.

In 1984 to 2019 the median growing season was 293 days. That is 21 days more than in 1908 to 1941.

Fitted over all years, the growing season changes by +2.6 days per decade at this station.

Frost dates and growing season at Flatonia 4SE
MeasureMedian, all yearsEarliest period (1908 to 1941)Recent period (1984 to 2019)Recent against earliestFitted trend
Last spring frost26 February27 February12 February15 days earlier-2.1 days per decade
First autumn frost3 December25 November6 December11 days later+0.5 days per decade
Growing days281 days272 days293 days21 days more+2.6 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

111 years, 1908 to 2019

A day with at least 85.1 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 299.9 mm (11.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Flatonia 4SE: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years85.1 mm (3.4 in)
5 years122.7 mm (4.8 in)
10 years154.1 mm (6.1 in)
25 years203.0 mm (8.0 in)
50 years247.5 mm (9.7 in)
100 years299.9 mm (11.8 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 111 years of values from 1908 to 2019.

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: 360.9 mm (14.2 in) in 1940; 299.2 mm (11.8 in) in 1981; 241.8 mm (9.5 in) in 1957.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2002 to 2019 against 1961 to 1990

Over 2002 to 2019, Flatonia 4SE had a mean temperature of 20.8 C (69.5 F) and 919.3 mm (36.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Beeville 5 NE (United States, 145 km away), Mathis 4 SSW (United States, 194 km away) and Houston Wb City (United States, 165 km away).

Climate twins of Flatonia 4SE: stations whose 1961 to 1990 climate is closest to its 2002 to 2019 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Beeville 5 NEUnited States145 km (90 mi)20.9 C (69.6 F)813.8 mm (32.0 in)0.65
Mathis 4 SSWUnited States194 km (121 mi)21.3 C (70.4 F)893.5 mm (35.2 in)0.79
Houston Wb CityUnited States165 km (103 mi)20.9 C (69.5 F)1,083.5 mm (42.7 in)0.84

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 Flatonia 4SE standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Flatonia 4SE 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 (2025-12-31).