Built 2026-10-17 (17 October 2026)

Collbran Weather Records (USC00051741)

Record envelope, standing records and threshold days for Collbran (USC00051741), Colorado, United States, with 134 years of record.

Key Facts for Collbran

  • Collbran (USC00051741) is a weather station in Colorado, United States at 39.24 latitude and -107.96 longitude, 1,833 m (6,013 ft) above sea level.
  • The station reports from 1893 to 2026, 134 years of record.
  • 1,464 records set at Collbran still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Collbran set a daily record high minimum temperature of 14.4 C (57.9 F) on 17 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Colorado, United States, 39.24 latitude, -107.96 longitude.
  • Elevation: 1,833 m (6,013 ft).
  • Period of record: 1893 to 2026, 134 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

39 days at or beyond a record
Daily record high and record low at Collbran, with 2026 drawn through them The band shows the record high and record low for each calendar day at Collbran. The lines show the 2026 daily maximum and minimum. 39 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Collbran. The lines show the 2026 daily maximum and minimum. 39 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Collbran, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.0 C (59.0 F)-33.3 C (-27.9 F)11.7 C (53.1 F)-23.3 C (-9.9 F)
Feb18.9 C (66.0 F)-37.8 C (-36.0 F)15.0 C (59.0 F)-16.1 C (3.0 F)
Mar28.3 C (82.9 F)-27.2 C (-17.0 F)28.3 C (82.9 F)-7.8 C (18.0 F)
Apr28.9 C (84.0 F)-21.7 C (-7.1 F)25.0 C (77.0 F)-7.8 C (18.0 F)
May32.8 C (91.0 F)-10.0 C (14.0 F)31.1 C (88.0 F)-2.8 C (27.0 F)
Jun36.7 C (98.1 F)-4.4 C (24.1 F)34.4 C (93.9 F)3.3 C (37.9 F)
Jul37.8 C (100.0 F)-0.6 C (30.9 F)37.8 C (100.0 F)6.7 C (44.1 F)
Aug37.8 C (100.0 F)-2.2 C (28.0 F)37.8 C (100.0 F)9.4 C (48.9 F)
Sep35.6 C (96.1 F)-7.8 C (18.0 F)32.2 C (90.0 F)5.6 C (42.1 F)
Oct31.1 C (88.0 F)-17.2 C (1.0 F)27.8 C (82.0 F)2.8 C (37.0 F)
Nov22.8 C (73.0 F)-23.9 C (-11.0 F)n/an/a
Dec17.8 C (64.0 F)-34.4 C (-29.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Collbran by the year they were set 1,464 records at Collbran still stand. 1924 holds the most, with 31. 0102030401900: 21901: 161902: 261903: 171904: 101905: 171906: 121907: 131908: 191909: 181910: 141911: 201912: 161913: 261914: 111915: 121916: 141917: 171918: 161919: 201920: 81921: 221922: 71923: 51924: 311925: 211926: 91927: 171928: 111929: 141930: 111931: 251932: 71933: 221934: 201935: 101936: 161937: 181938: 111939: 141940: 81941: 91942: 91943: 121944: 131945: 101946: 131947: 131948: 241949: 101950: 151951: 111952: 131953: 171954: 221955: 271956: 281957: 111958: 251959: 141960: 121961: 101962: 241963: 301964: 51965: 131966: 151967: 11970: 111971: 251972: 181973: 161974: 231975: 261976: 101978: 161979: 171980: 111981: 81982: 121983: 71984: 91985: 71986: 151987: 51988: 81989: 131990: 131991: 121992: 111993: 41994: 81995: 91996: 11997: 121998: 151999: 252024: 102025: 292026: 291900191019201930194019501960197219831993
1,464 records at Collbran still stand. 1924 holds the most, with 31.
Standing records at Collbran by the year they were set
Year setStanding records
19002
190116
190226
190317
190410
190517
190612
190713
190819
190918
191014
191120
191216
191326
191411
191512
191614
191717
191816
191920
19208
192122
19227
19235
192431
192521
19269
192717
192811
192914
193011
193125
19327
193322
193420
193510
193616
193718
193811
193914
19408
19419
19429
194312
194413
194510
194613
194713
194824
194910
195015
195111
195213
195317
195422
195527
195628
195711
195825
195914
196012
196110
196224
196330
19645
196513
196615
19671
197011
197125
197218
197316
197423
197526
197610
197816
197917
198011
19818
198212
19837
19849
19857
198615
19875
19888
198913
199013
199112
199211
19934
19948
19959
19961
199712
199815
199925
202410
202529
202629

All-Time Record Progression

2 new records
When Collbran set new all-time records 2 all-time records were set at Collbran between 8 February 1933 and 13 October 1957. Each dot is a new record. Record low minimum temperatureRecord daily precipitation8 February 1933: Record low minimum temperature -37.8 C (-36.0 F)13 October 1957: Record daily precipitation 62.2 mm (2.4 in)19351940194519501955
2 all-time records were set at Collbran between 8 February 1933 and 13 October 1957. Each dot is a new record.
When Collbran set new all-time records
DateKindDetail
1933-02-08Record low minimum temperatureRecord low minimum temperature -37.8 C (-36.0 F)
1957-10-13Record daily precipitationRecord daily precipitation 62.2 mm (2.4 in)

Wettest Day of Each Month

Oct: 62.2 mm (2.4 in)
Record daily precipitation for each month at Collbran The wettest day on record for each calendar month at Collbran. The most was 62.2 mm (2.4 in) on 13 October 1957. 020406080 Jan: 32.5 mm (1.3 in), 23 January 1909 Jan Feb: 27.9 mm (1.1 in), 1 February 1893 Feb Mar: 47.0 mm (1.9 in), 28 March 1993 Mar Apr: 30.5 mm (1.2 in), 9 April 1978 Apr May: 50.0 mm (2.0 in), 2 May 1914 May Jun: 38.6 mm (1.5 in), 28 June 1927 Jun Jul: 40.6 mm (1.6 in), 13 July 1975 Jul Aug: 29.0 mm (1.1 in), 21 August 1893 Aug Sep: 42.4 mm (1.7 in), 11 September 1917 Sep Oct: 62.2 mm (2.4 in), 13 October 1957 Oct Nov: 29.2 mm (1.1 in), 18 November 1930 Nov Dec: 26.7 mm (1.1 in), 11 December 1965 Dec
The wettest day on record for each calendar month at Collbran. The most was 62.2 mm (2.4 in) on 13 October 1957.
Record daily precipitation for each month at Collbran
MonthRecord daily precipitation (mm)Date
Jan32.5 mm (1.3 in)23 January 1909
Feb27.9 mm (1.1 in)1 February 1893
Mar47.0 mm (1.9 in)28 March 1993
Apr30.5 mm (1.2 in)9 April 1978
May50.0 mm (2.0 in)2 May 1914
Jun38.6 mm (1.5 in)28 June 1927
Jul40.6 mm (1.6 in)13 July 1975
Aug29.0 mm (1.1 in)21 August 1893
Sep42.4 mm (1.7 in)11 September 1917
Oct62.2 mm (2.4 in)13 October 1957
Nov29.2 mm (1.1 in)18 November 1930
Dec26.7 mm (1.1 in)11 December 1965

Period of Record Coverage

1900 to 2026
Days with data per year at Collbran 101 years of record at Collbran, 1900 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 1900, 1920, 1921, 1926, 1967, 1974, 1978, 1996 and others. 1900: 70 of 365 days1901: 361 of 365 days1902: 365 of 365 days1903: 365 of 365 days1904: 366 of 366 days1905: 365 of 365 days1906: 365 of 365 days1907: 345 of 365 days1908: 348 of 366 days1909: 365 of 365 days1910: 364 of 365 days1911: 363 of 365 days1912: 366 of 366 days1913: 361 of 365 days1914: 354 of 365 days1915: 364 of 365 days1916: 366 of 366 days1917: 356 of 365 days1918: 345 of 365 days1919: 364 of 365 days1920: 271 of 366 days1921: 260 of 365 days1922: 357 of 365 days1923: 362 of 365 days1924: 336 of 366 days1925: 336 of 365 days1926: 259 of 365 days1927: 346 of 365 days1928: 357 of 366 days1929: 329 of 365 days1930: 342 of 365 days1931: 361 of 365 days1932: 351 of 366 days1933: 350 of 365 days1934: 353 of 365 days1935: 354 of 365 days1936: 358 of 366 days1937: 356 of 365 days1938: 359 of 365 days1939: 357 of 365 days1940: 356 of 366 days1941: 354 of 365 days1942: 354 of 365 days1943: 360 of 365 days1944: 366 of 366 days1945: 365 of 365 days1946: 359 of 365 days1947: 365 of 365 days1948: 365 of 366 days1949: 340 of 365 days1950: 365 of 365 days1951: 353 of 365 days1952: 358 of 366 days1953: 363 of 365 days1954: 362 of 365 days1955: 359 of 365 days1956: 365 of 366 days1957: 358 of 365 days1958: 365 of 365 days1959: 363 of 365 days1960: 364 of 366 days1961: 352 of 365 days1962: 361 of 365 days1963: 365 of 365 days1964: 362 of 366 days1965: 363 of 365 days1966: 363 of 365 days1967: 18 of 365 days1970: 334 of 365 days1971: 360 of 365 days1972: 354 of 366 days1973: 343 of 365 days1974: 319 of 365 days1975: 364 of 365 days1976: 334 of 366 days1978: 273 of 365 days1979: 332 of 365 days1980: 362 of 366 days1981: 362 of 365 days1982: 364 of 365 days1983: 361 of 365 days1984: 365 of 366 days1985: 364 of 365 days1986: 361 of 365 days1987: 362 of 365 days1988: 365 of 366 days1989: 364 of 365 days1990: 363 of 365 days1991: 364 of 365 days1992: 365 of 366 days1993: 364 of 365 days1994: 364 of 365 days1995: 352 of 365 days1996: 151 of 366 days1997: 275 of 365 days1998: 359 of 365 days1999: 359 of 365 days2023: 31 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 263 of 365 days19051920193519501965198019952025
101 years of record at Collbran, 1900 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 1900, 1920, 1921, 1926, 1967, 1974, 1978, 1996 and others.
Days with data per year at Collbran
YearDays with dataShare of yearComplete
19007019%No
190136199%Yes
1902365100%Yes
1903365100%Yes
1904366100%Yes
1905365100%Yes
1906365100%Yes
190734595%Yes
190834895%Yes
1909365100%Yes
1910364100%Yes
191136399%Yes
1912366100%Yes
191336199%Yes
191435497%Yes
1915364100%Yes
1916366100%Yes
191735698%Yes
191834595%Yes
1919364100%Yes
192027174%No
192126071%No
192235798%Yes
192336299%Yes
192433692%Yes
192533692%Yes
192625971%No
192734695%Yes
192835798%Yes
192932990%Yes
193034294%Yes
193136199%Yes
193235196%Yes
193335096%Yes
193435397%Yes
193535497%Yes
193635898%Yes
193735698%Yes
193835998%Yes
193935798%Yes
194035697%Yes
194135497%Yes
194235497%Yes
194336099%Yes
1944366100%Yes
1945365100%Yes
194635998%Yes
1947365100%Yes
1948365100%Yes
194934093%Yes
1950365100%Yes
195135397%Yes
195235898%Yes
195336399%Yes
195436299%Yes
195535998%Yes
1956365100%Yes
195735898%Yes
1958365100%Yes
195936399%Yes
196036499%Yes
196135296%Yes
196236199%Yes
1963365100%Yes
196436299%Yes
196536399%Yes
196636399%Yes
1967185%No
197033492%Yes
197136099%Yes
197235497%Yes
197334394%Yes
197431987%No
1975364100%Yes
197633491%Yes
197827375%No
197933291%Yes
198036299%Yes
198136299%Yes
1982364100%Yes
198336199%Yes
1984365100%Yes
1985364100%Yes
198636199%Yes
198736299%Yes
1988365100%Yes
1989364100%Yes
199036399%Yes
1991364100%Yes
1992365100%Yes
1993364100%Yes
1994364100%Yes
199535296%Yes
199615141%No
199727575%No
199835998%Yes
199935998%Yes
2023318%No
2024366100%Yes
2025365100%Yes
202626372%No

Latest Records

20
Latest records at Collbran
DateStationRecordValueBeat old record byOld record stoodSignificance
17 September 2026Collbran, USdaily high min (Provisional)14.4 C (57.9 F)1.1 C (2.0 F)117 years42 of 100 (Notable)
14 September 2026Collbran, USdaily high min (Provisional)14.4 C (57.9 F)2.2 C (4.0 F)107 years45 of 100 (Notable)
29 August 2026Collbran, USdaily high max (Tie, Provisional)35.0 C (95.0 F)tie68 years7 of 100 (Routine)
28 August 2026Collbran, USdaily high max (Provisional)34.4 C (93.9 F)2.2 C (4.0 F)120 years47 of 100 (Notable)
28 August 2026Collbran, USdaily high min (Tie, Provisional)16.1 C (61.0 F)tie68 years7 of 100 (Routine)
27 August 2026Collbran, USdaily high max (Tie, Provisional)34.4 C (93.9 F)tie40 years5 of 100 (Routine)
26 August 2026Collbran, USdaily high max (Provisional)33.9 C (93.0 F)0.6 C (1.1 F)64 years30 of 100 (Routine)
22 August 2026Collbran, USdaily high min (Tie, Provisional)16.1 C (61.0 F)tie0 years2 of 100 (Routine)
21 August 2026Collbran, USdaily high max (Provisional)36.7 C (98.1 F)0.6 C (1.1 F)0 years11 of 100 (Routine)
19 August 2026Collbran, USdaily high max (Provisional)34.4 C (93.9 F)0.5 C (0.9 F)123 years41 of 100 (Notable)
19 August 2026Collbran, USdaily high min (Provisional)15.6 C (60.1 F)1.2 C (2.2 F)89 years39 of 100 (Notable)
12 August 2026Collbran, USdaily high min (Tie)15.0 C (59.0 F)tie64 years7 of 100 (Routine)
10 August 2026Collbran, USdaily high max (Tie)35.0 C (95.0 F)tie68 years7 of 100 (Routine)
9 August 2026Collbran, USdaily high max37.2 C (99.0 F)2.2 C (4.0 F)61 years35 of 100 (Notable)
8 August 2026Collbran, USall-time high max (Tie)37.8 C (100.0 F)tie124 years15 of 100 (Routine)
7 August 2026Collbran, USdaily high max36.1 C (97.0 F)0.5 C (0.9 F)68 years31 of 100 (Routine)
6 August 2026Collbran, USdaily high max36.1 C (97.0 F)0.5 C (0.9 F)76 years34 of 100 (Routine)
4 August 2026Collbran, USdaily high max37.2 C (99.0 F)1.1 C (2.0 F)1 year13 of 100 (Routine)
3 August 2026Collbran, USall-time high max (Tie)37.8 C (100.0 F)tie124 years15 of 100 (Routine)
3 August 2026Collbran, USdaily high min (Tie)16.7 C (62.1 F)tie92 years9 of 100 (Routine)

Climate Trend

80 complete years, 1901 to 2025
Annual mean temperature at Collbran as warming stripes, 1901 to 2025 One stripe for each of 80 complete years at Collbran, 1901 to 2025. Blue stripes are years cooler than the station's own mean of 8.0 C (46.4 F); red stripes are warmer. The coolest year was 1975, at 6.1 C (42.9 F), and the warmest was 1954, at 10.2 C (50.4 F). The strongest colour marks a difference of 2.3 C (4.1 F). 1901: 9.0 C, +1.0 C from the station mean1902: 8.5 C, +0.5 C from the station mean1903: 7.0 C, -1.0 C from the station mean1904: 8.2 C, +0.2 C from the station mean1905: 7.6 C, -0.4 C from the station mean1906: 8.0 C, +0.1 C from the station mean1907: 8.7 C, +0.7 C from the station mean1908: 7.1 C, -0.9 C from the station mean1909: 7.5 C, -0.5 C from the station mean1910: 9.1 C, +1.1 C from the station mean1911: 7.9 C, -0.1 C from the station mean1912: 6.5 C, -1.5 C from the station mean1913: 7.2 C, -0.8 C from the station mean1914: 8.2 C, +0.3 C from the station mean1915: 7.9 C, -0.1 C from the station mean1916: 7.7 C, -0.3 C from the station mean1917: 7.6 C, -0.4 C from the station mean1918: 7.8 C, -0.2 C from the station mean1919: 7.8 C, -0.2 C from the station mean1922: 7.4 C, -0.6 C from the station mean1923: 7.1 C, -0.9 C from the station mean1924: 6.6 C, -1.4 C from the station mean1925: 7.6 C, -0.3 C from the station mean1927: 7.6 C, -0.4 C from the station mean1928: 7.3 C, -0.7 C from the station mean1930: 6.4 C, -1.6 C from the station mean1931: 7.7 C, -0.3 C from the station mean1932: 6.7 C, -1.2 C from the station mean1933: 7.4 C, -0.6 C from the station mean1934: 9.5 C, +1.6 C from the station mean1935: 7.7 C, -0.3 C from the station mean1936: 8.0 C, 0.0 C from the station mean1937: 7.3 C, -0.7 C from the station mean1938: 7.5 C, -0.5 C from the station mean1939: 7.5 C, -0.4 C from the station mean1940: 8.2 C, +0.2 C from the station mean1941: 7.5 C, -0.5 C from the station mean1942: 6.9 C, -1.1 C from the station mean1943: 8.1 C, +0.2 C from the station mean1944: 6.9 C, -1.1 C from the station mean1945: 7.1 C, -0.9 C from the station mean1946: 7.1 C, -0.8 C from the station mean1947: 7.2 C, -0.8 C from the station mean1948: 6.5 C, -1.5 C from the station mean1950: 8.7 C, +0.7 C from the station mean1952: 7.8 C, -0.2 C from the station mean1953: 9.4 C, +1.4 C from the station mean1954: 10.2 C, +2.3 C from the station mean1955: 8.3 C, +0.4 C from the station mean1956: 9.2 C, +1.3 C from the station mean1957: 8.4 C, +0.4 C from the station mean1958: 9.7 C, +1.7 C from the station mean1959: 9.0 C, +1.0 C from the station mean1960: 9.2 C, +1.2 C from the station mean1961: 8.7 C, +0.7 C from the station mean1962: 9.7 C, +1.7 C from the station mean1963: 9.9 C, +1.9 C from the station mean1964: 8.3 C, +0.3 C from the station mean1965: 8.7 C, +0.8 C from the station mean1966: 8.9 C, +0.9 C from the station mean1971: 7.1 C, -0.9 C from the station mean1972: 7.5 C, -0.4 C from the station mean1975: 6.1 C, -1.9 C from the station mean1980: 9.3 C, +1.4 C from the station mean1981: 9.1 C, +1.1 C from the station mean1982: 7.4 C, -0.6 C from the station mean1983: 7.5 C, -0.5 C from the station mean1984: 6.9 C, -1.0 C from the station mean1986: 8.3 C, +0.3 C from the station mean1987: 7.6 C, -0.4 C from the station mean1988: 6.9 C, -1.1 C from the station mean1989: 7.5 C, -0.5 C from the station mean1990: 7.8 C, -0.2 C from the station mean1991: 7.5 C, -0.5 C from the station mean1992: 8.3 C, +0.3 C from the station mean1993: 7.9 C, -0.1 C from the station mean1994: 9.2 C, +1.3 C from the station mean1999: 8.8 C, +0.8 C from the station mean2024: 9.5 C, +1.5 C from the station mean2025: 10.1 C, +2.1 C from the station mean1901191019201930194019501960197019801990200020102020
One stripe for each of 80 complete years at Collbran, 1901 to 2025. Blue stripes are years cooler than the station's own mean of 8.0 C (46.4 F); red stripes are warmer. The coolest year was 1975, at 6.1 C (42.9 F), and the warmest was 1954, at 10.2 C (50.4 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Collbran as warming stripes, 1901 to 2025
YearAnnual mean temperatureDifference from the station mean
19019.0 C+1.02 C
19028.5 C+0.50 C
19037.0 C-0.95 C
19048.2 C+0.18 C
19057.6 C-0.40 C
19068.0 C+0.07 C
19078.7 C+0.70 C
19087.1 C-0.92 C
19097.5 C-0.48 C
19109.1 C+1.10 C
19117.9 C-0.07 C
19126.5 C-1.50 C
19137.2 C-0.78 C
19148.2 C+0.26 C
19157.9 C-0.07 C
19167.7 C-0.32 C
19177.6 C-0.40 C
19187.8 C-0.21 C
19197.8 C-0.16 C
19227.4 C-0.56 C
19237.1 C-0.90 C
19246.6 C-1.35 C
19257.6 C-0.33 C
19277.6 C-0.41 C
19287.3 C-0.70 C
19306.4 C-1.55 C
19317.7 C-0.32 C
19326.7 C-1.24 C
19337.4 C-0.58 C
19349.5 C+1.56 C
19357.7 C-0.30 C
19368.0 C-0.01 C
19377.3 C-0.70 C
19387.5 C-0.50 C
19397.5 C-0.43 C
19408.2 C+0.24 C
19417.5 C-0.45 C
19426.9 C-1.10 C
19438.1 C+0.17 C
19446.9 C-1.06 C
19457.1 C-0.92 C
19467.1 C-0.83 C
19477.2 C-0.80 C
19486.5 C-1.50 C
19508.7 C+0.68 C
19527.8 C-0.16 C
19539.4 C+1.40 C
195410.2 C+2.26 C
19558.3 C+0.37 C
19569.2 C+1.27 C
19578.4 C+0.41 C
19589.7 C+1.69 C
19599.0 C+1.04 C
19609.2 C+1.21 C
19618.7 C+0.73 C
19629.7 C+1.71 C
19639.9 C+1.94 C
19648.3 C+0.29 C
19658.7 C+0.77 C
19668.9 C+0.91 C
19717.1 C-0.89 C
19727.5 C-0.43 C
19756.1 C-1.90 C
19809.3 C+1.37 C
19819.1 C+1.11 C
19827.4 C-0.60 C
19837.5 C-0.46 C
19846.9 C-1.04 C
19868.3 C+0.33 C
19877.6 C-0.39 C
19886.9 C-1.09 C
19897.5 C-0.47 C
19907.8 C-0.22 C
19917.5 C-0.48 C
19928.3 C+0.32 C
19937.9 C-0.11 C
19949.2 C+1.27 C
19998.8 C+0.80 C
20249.5 C+1.53 C
202510.1 C+2.12 C

The annual mean temperature here has risen by 0.09 C (0.02 to 0.16) per decade over 1901 to 2025. In Fahrenheit: 0.16 F (0.04 to 0.28) per decade. The slope is a straight line fitted to 80 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Collbran
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.09 C (0.02 to 0.16) per decade0.16 F (0.04 to 0.28) per decade1901 to 202580Rise
Mean daily maximum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.4) per decade1901 to 202580Rise
Mean daily minimum0.04 C (-0.05 to 0.13) per decade0.1 F (-0.1 to 0.2) per decade1901 to 202580Not clearly different from zero

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

1893 to 2026
Yearly extremes at Collbran: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)190234.4 C (93.9 F)101
Coldest night (TNn)-37.8 C (-36.0 F)1933-25.0 C (-13.0 F)101
Wettest day (Rx1day)62.2 mm (2.4 in)195724.3 mm (1.0 in)108
Wettest five days (Rx5day)79.7 mm (3.1 in)190638.4 mm (1.5 in)108
Longest dry spell (CDD)69 days190028 days108

Hottest day (TXx)

Hottest day (TXx) at Collbran by year The hottest day of the year at Collbran, 1893 to 2026. The record is 37.8 C (100.0 F) in 1902, marked on the chart; the median year is 34.4 C (93.9 F). 102030401900192019401960198020002020Record: 37.8 C (100.0 F) in 1902
The hottest day of the year at Collbran, 1893 to 2026. The record is 37.8 C (100.0 F) in 1902, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Collbran by year
YearHottest day (TXx)
1893n/a
1894n/a
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
190022.2 C (72.0 F)
190137.2 C (99.0 F)
190237.8 C (100.0 F)
190334.4 C (93.9 F)
190434.4 C (93.9 F)
190534.4 C (93.9 F)
190633.3 C (91.9 F)
190733.9 C (93.0 F)
190832.8 C (91.0 F)
190932.8 C (91.0 F)
191032.8 C (91.0 F)
191131.7 C (89.1 F)
191230.6 C (87.1 F)
191333.3 C (91.9 F)
191432.8 C (91.0 F)
191533.3 C (91.9 F)
191633.9 C (93.0 F)
191733.9 C (93.0 F)
191834.4 C (93.9 F)
191936.7 C (98.1 F)
192032.8 C (91.0 F)
192133.9 C (93.0 F)
192235.0 C (95.0 F)
192333.9 C (93.0 F)
192434.4 C (93.9 F)
192537.2 C (99.0 F)
192634.4 C (93.9 F)
192736.1 C (97.0 F)
192833.3 C (91.9 F)
192934.4 C (93.9 F)
193035.0 C (95.0 F)
193137.2 C (99.0 F)
193233.9 C (93.0 F)
193335.6 C (96.1 F)
193437.2 C (99.0 F)
193535.0 C (95.0 F)
193636.1 C (97.0 F)
193734.4 C (93.9 F)
193835.0 C (95.0 F)
193936.7 C (98.1 F)
194035.6 C (96.1 F)
194133.9 C (93.0 F)
194234.4 C (93.9 F)
194333.3 C (91.9 F)
194431.7 C (89.1 F)
194532.8 C (91.0 F)
194632.2 C (90.0 F)
194734.4 C (93.9 F)
194832.8 C (91.0 F)
194936.1 C (97.0 F)
195033.9 C (93.0 F)
195133.9 C (93.0 F)
195234.4 C (93.9 F)
195335.6 C (96.1 F)
195435.6 C (96.1 F)
195535.6 C (96.1 F)
195633.9 C (93.0 F)
195734.4 C (93.9 F)
195836.1 C (97.0 F)
195936.1 C (97.0 F)
196036.1 C (97.0 F)
196135.0 C (95.0 F)
196236.7 C (98.1 F)
196337.2 C (99.0 F)
196437.2 C (99.0 F)
196533.3 C (91.9 F)
196636.1 C (97.0 F)
196722.2 C (72.0 F)
197035.6 C (96.1 F)
197136.7 C (98.1 F)
197235.6 C (96.1 F)
197335.0 C (95.0 F)
197435.0 C (95.0 F)
197534.4 C (93.9 F)
197636.1 C (97.0 F)
197835.6 C (96.1 F)
197937.2 C (99.0 F)
198035.0 C (95.0 F)
198135.6 C (96.1 F)
198235.6 C (96.1 F)
198333.3 C (91.9 F)
198433.3 C (91.9 F)
198536.7 C (98.1 F)
198634.4 C (93.9 F)
198735.6 C (96.1 F)
198834.4 C (93.9 F)
198936.7 C (98.1 F)
199035.6 C (96.1 F)
199133.9 C (93.0 F)
199232.8 C (91.0 F)
199334.4 C (93.9 F)
199436.7 C (98.1 F)
199536.1 C (97.0 F)
199630.6 C (87.1 F)
199734.4 C (93.9 F)
199836.1 C (97.0 F)
199933.3 C (91.9 F)
202311.1 C (52.0 F)
202436.7 C (98.1 F)
202537.8 C (100.0 F)
202637.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Collbran by year The coldest night of the year at Collbran, 1893 to 2026. The record is -37.8 C (-36.0 F) in 1933, marked on the chart; the median year is -25.0 C (-13.0 F). -40-30-20-1001900192019401960198020002020Record: -37.8 C (-36.0 F) in 1933
The coldest night of the year at Collbran, 1893 to 2026. The record is -37.8 C (-36.0 F) in 1933, marked on the chart; the median year is -25.0 C (-13.0 F).
Coldest night (TNn) at Collbran by year
YearColdest night (TNn)
1893n/a
1894n/a
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900-18.9 C (-2.0 F)
1901-26.1 C (-15.0 F)
1902-25.0 C (-13.0 F)
1903-29.4 C (-20.9 F)
1904-26.7 C (-16.1 F)
1905-34.4 C (-29.9 F)
1906-25.0 C (-13.0 F)
1907-23.9 C (-11.0 F)
1908-25.6 C (-14.1 F)
1909-23.3 C (-9.9 F)
1910-25.0 C (-13.0 F)
1911-22.8 C (-9.0 F)
1912-20.6 C (-5.1 F)
1913-30.0 C (-22.0 F)
1914-20.0 C (-4.0 F)
1915-20.6 C (-5.1 F)
1916-23.9 C (-11.0 F)
1917-25.0 C (-13.0 F)
1918-23.9 C (-11.0 F)
1919-31.1 C (-24.0 F)
1920-23.9 C (-11.0 F)
1921-15.6 C (3.9 F)
1922-27.2 C (-17.0 F)
1923-24.4 C (-11.9 F)
1924-34.4 C (-29.9 F)
1925-30.0 C (-22.0 F)
1926-27.2 C (-17.0 F)
1927-26.7 C (-16.1 F)
1928-23.9 C (-11.0 F)
1929-31.1 C (-24.0 F)
1930-32.2 C (-26.0 F)
1931-25.6 C (-14.1 F)
1932-28.3 C (-18.9 F)
1933-37.8 C (-36.0 F)
1934-21.7 C (-7.1 F)
1935-30.0 C (-22.0 F)
1936-25.0 C (-13.0 F)
1937-32.8 C (-27.0 F)
1938-23.9 C (-11.0 F)
1939-28.3 C (-18.9 F)
1940-31.7 C (-25.1 F)
1941-22.8 C (-9.0 F)
1942-32.8 C (-27.0 F)
1943-20.0 C (-4.0 F)
1944-26.7 C (-16.1 F)
1945-27.2 C (-17.0 F)
1946-26.7 C (-16.1 F)
1947-28.9 C (-20.0 F)
1948-33.3 C (-27.9 F)
1949-32.2 C (-26.0 F)
1950-25.6 C (-14.1 F)
1951-35.0 C (-31.0 F)
1952-25.0 C (-13.0 F)
1953-21.1 C (-6.0 F)
1954-18.9 C (-2.0 F)
1955-23.9 C (-11.0 F)
1956-23.3 C (-9.9 F)
1957-18.3 C (-0.9 F)
1958-17.8 C (0.0 F)
1959-23.9 C (-11.0 F)
1960-20.0 C (-4.0 F)
1961-22.2 C (-8.0 F)
1962-25.6 C (-14.1 F)
1963-32.2 C (-26.0 F)
1964-21.1 C (-6.0 F)
1965-20.6 C (-5.1 F)
1966-21.7 C (-7.1 F)
1967-8.9 C (16.0 F)
1970-18.3 C (-0.9 F)
1971-32.2 C (-26.0 F)
1972-23.9 C (-11.0 F)
1973-23.9 C (-11.0 F)
1974-26.1 C (-15.0 F)
1975-27.8 C (-18.0 F)
1976-27.8 C (-18.0 F)
1978-29.4 C (-20.9 F)
1979-30.6 C (-23.1 F)
1980-16.1 C (3.0 F)
1981-18.9 C (-2.0 F)
1982-28.9 C (-20.0 F)
1983-23.9 C (-11.0 F)
1984-26.1 C (-15.0 F)
1985-27.2 C (-17.0 F)
1986-20.0 C (-4.0 F)
1987-24.4 C (-11.9 F)
1988-26.1 C (-15.0 F)
1989-32.8 C (-27.0 F)
1990-30.0 C (-22.0 F)
1991-24.4 C (-11.9 F)
1992-21.7 C (-7.1 F)
1993-21.1 C (-6.0 F)
1994-21.1 C (-6.0 F)
1995-18.9 C (-2.0 F)
1996-19.4 C (-2.9 F)
1997-20.0 C (-4.0 F)
1998-25.6 C (-14.1 F)
1999-20.6 C (-5.1 F)
2023-16.7 C (1.9 F)
2024-20.6 C (-5.1 F)
2025-25.0 C (-13.0 F)
2026-23.3 C (-9.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Collbran by year The wettest day of the year at Collbran, 1893 to 2026. The record is 62.2 mm (2.4 in) in 1957, marked on the chart; the median year is 24.3 mm (1.0 in). 0204060801900192019401960198020002020Record: 62.2 mm (2.4 in) in 1957
The wettest day of the year at Collbran, 1893 to 2026. The record is 62.2 mm (2.4 in) in 1957, marked on the chart; the median year is 24.3 mm (1.0 in).
Wettest day (Rx1day) at Collbran by year
YearWettest day (Rx1day)
189329.0 mm (1.1 in)
189426.2 mm (1.0 in)
189524.1 mm (0.9 in)
189618.0 mm (0.7 in)
189719.1 mm (0.8 in)
189820.3 mm (0.8 in)
189925.9 mm (1.0 in)
190014.0 mm (0.6 in)
190128.4 mm (1.1 in)
190223.6 mm (0.9 in)
190327.4 mm (1.1 in)
190417.0 mm (0.7 in)
190524.4 mm (1.0 in)
190641.1 mm (1.6 in)
190718.0 mm (0.7 in)
190839.4 mm (1.6 in)
190932.5 mm (1.3 in)
191019.8 mm (0.8 in)
191127.9 mm (1.1 in)
191232.0 mm (1.3 in)
191322.6 mm (0.9 in)
191450.0 mm (2.0 in)
191518.5 mm (0.7 in)
191641.9 mm (1.6 in)
191742.4 mm (1.7 in)
191833.0 mm (1.3 in)
191929.2 mm (1.1 in)
192019.1 mm (0.8 in)
192127.9 mm (1.1 in)
192224.9 mm (1.0 in)
192320.3 mm (0.8 in)
192436.6 mm (1.4 in)
192522.9 mm (0.9 in)
192621.6 mm (0.9 in)
192738.6 mm (1.5 in)
192826.4 mm (1.0 in)
192918.3 mm (0.7 in)
193029.2 mm (1.1 in)
193124.1 mm (0.9 in)
193231.8 mm (1.3 in)
193319.1 mm (0.8 in)
193427.9 mm (1.1 in)
193520.3 mm (0.8 in)
193622.9 mm (0.9 in)
193732.0 mm (1.3 in)
193826.2 mm (1.0 in)
193921.6 mm (0.9 in)
194026.7 mm (1.1 in)
194120.1 mm (0.8 in)
194220.6 mm (0.8 in)
194333.0 mm (1.3 in)
194422.9 mm (0.9 in)
194526.7 mm (1.1 in)
194626.7 mm (1.1 in)
194727.9 mm (1.1 in)
194821.3 mm (0.8 in)
194920.3 mm (0.8 in)
195019.1 mm (0.8 in)
195120.8 mm (0.8 in)
195224.1 mm (0.9 in)
195329.2 mm (1.1 in)
195417.0 mm (0.7 in)
195520.8 mm (0.8 in)
195627.9 mm (1.1 in)
195762.2 mm (2.4 in)
195828.2 mm (1.1 in)
195919.3 mm (0.8 in)
196023.1 mm (0.9 in)
196129.0 mm (1.1 in)
196216.5 mm (0.6 in)
196338.1 mm (1.5 in)
196419.1 mm (0.8 in)
196530.7 mm (1.2 in)
196621.1 mm (0.8 in)
19675.6 mm (0.22 in)
197033.3 mm (1.3 in)
197134.8 mm (1.4 in)
197223.9 mm (0.9 in)
197316.3 mm (0.6 in)
197411.2 mm (0.4 in)
197540.6 mm (1.6 in)
197617.0 mm (0.7 in)
197830.5 mm (1.2 in)
197918.5 mm (0.7 in)
198027.9 mm (1.1 in)
198121.3 mm (0.8 in)
198231.8 mm (1.3 in)
198326.2 mm (1.0 in)
198434.5 mm (1.4 in)
198522.6 mm (0.9 in)
198622.4 mm (0.9 in)
198713.5 mm (0.5 in)
198824.6 mm (1.0 in)
198917.0 mm (0.7 in)
199027.4 mm (1.1 in)
199125.4 mm (1.0 in)
199223.1 mm (0.9 in)
199347.0 mm (1.9 in)
199413.2 mm (0.5 in)
199524.9 mm (1.0 in)
199625.9 mm (1.0 in)
199721.8 mm (0.9 in)
199825.4 mm (1.0 in)
199922.9 mm (0.9 in)
202311.7 mm (0.5 in)
202426.9 mm (1.1 in)
202517.8 mm (0.7 in)
202614.5 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Collbran by year The wettest five days of the year at Collbran, 1893 to 2026. The record is 79.7 mm (3.1 in) in 1906, marked on the chart; the median year is 38.4 mm (1.5 in). 0204060801900192019401960198020002020Record: 79.7 mm (3.1 in) in 1906
The wettest five days of the year at Collbran, 1893 to 2026. The record is 79.7 mm (3.1 in) in 1906, marked on the chart; the median year is 38.4 mm (1.5 in).
Wettest five days (Rx5day) at Collbran by year
YearWettest five days (Rx5day)
189331.5 mm (1.2 in)
189431.8 mm (1.3 in)
189540.6 mm (1.6 in)
189635.6 mm (1.4 in)
189730.5 mm (1.2 in)
189833.0 mm (1.3 in)
189927.2 mm (1.1 in)
190023.2 mm (0.9 in)
190146.3 mm (1.8 in)
190226.0 mm (1.0 in)
190343.2 mm (1.7 in)
190423.1 mm (0.9 in)
190551.1 mm (2.0 in)
190679.7 mm (3.1 in)
190739.8 mm (1.6 in)
190878.0 mm (3.1 in)
190942.6 mm (1.7 in)
191042.4 mm (1.7 in)
191151.9 mm (2.0 in)
191245.7 mm (1.8 in)
191333.5 mm (1.3 in)
191479.6 mm (3.1 in)
191540.7 mm (1.6 in)
191646.5 mm (1.8 in)
191763.0 mm (2.5 in)
191844.1 mm (1.7 in)
191952.3 mm (2.1 in)
192034.8 mm (1.4 in)
192162.2 mm (2.4 in)
192233.8 mm (1.3 in)
192330.2 mm (1.2 in)
192457.9 mm (2.3 in)
192535.1 mm (1.4 in)
192637.8 mm (1.5 in)
192747.0 mm (1.9 in)
192840.5 mm (1.6 in)
192934.3 mm (1.4 in)
193047.8 mm (1.9 in)
193143.7 mm (1.7 in)
193236.4 mm (1.4 in)
193335.6 mm (1.4 in)
193438.1 mm (1.5 in)
193532.3 mm (1.3 in)
193637.6 mm (1.5 in)
193770.4 mm (2.8 in)
193830.4 mm (1.2 in)
193931.8 mm (1.3 in)
194043.4 mm (1.7 in)
194136.4 mm (1.4 in)
194239.6 mm (1.6 in)
194341.9 mm (1.6 in)
194444.0 mm (1.7 in)
194545.7 mm (1.8 in)
194631.2 mm (1.2 in)
194741.6 mm (1.6 in)
194829.8 mm (1.2 in)
194933.9 mm (1.3 in)
195032.7 mm (1.3 in)
195136.1 mm (1.4 in)
195236.1 mm (1.4 in)
195341.6 mm (1.6 in)
195428.7 mm (1.1 in)
195525.9 mm (1.0 in)
195638.1 mm (1.5 in)
195774.1 mm (2.9 in)
195832.0 mm (1.3 in)
195926.9 mm (1.1 in)
196029.2 mm (1.1 in)
196144.5 mm (1.8 in)
196226.7 mm (1.1 in)
196343.2 mm (1.7 in)
196428.0 mm (1.1 in)
196556.4 mm (2.2 in)
196639.9 mm (1.6 in)
19678.6 mm (0.34 in)
197049.8 mm (2.0 in)
197135.6 mm (1.4 in)
197240.4 mm (1.6 in)
197329.7 mm (1.2 in)
197416.3 mm (0.6 in)
197555.1 mm (2.2 in)
197618.8 mm (0.7 in)
197831.0 mm (1.2 in)
197926.6 mm (1.0 in)
198043.4 mm (1.7 in)
198138.6 mm (1.5 in)
198241.2 mm (1.6 in)
198353.3 mm (2.1 in)
198461.4 mm (2.4 in)
198548.1 mm (1.9 in)
198660.0 mm (2.4 in)
198726.0 mm (1.0 in)
198849.0 mm (1.9 in)
198921.1 mm (0.8 in)
199030.2 mm (1.2 in)
199153.9 mm (2.1 in)
199247.0 mm (1.9 in)
199357.2 mm (2.3 in)
199424.4 mm (1.0 in)
199544.7 mm (1.8 in)
199636.5 mm (1.4 in)
199752.8 mm (2.1 in)
199834.6 mm (1.4 in)
199948.8 mm (1.9 in)
202315.5 mm (0.6 in)
202437.1 mm (1.5 in)
202541.2 mm (1.6 in)
202627.7 mm (1.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Collbran by year The longest dry spell of the year at Collbran, 1893 to 2026. The record is 69 days in 1900, marked on the chart; the median year is 28 days. 0204060801900192019401960198020002020Record: 69 days in 1900
The longest dry spell of the year at Collbran, 1893 to 2026. The record is 69 days in 1900, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Collbran by year
YearLongest dry spell (CDD)
189335 days
189424 days
189527 days
189636 days
189727 days
189847 days
189931 days
190069 days
190122 days
190218 days
190338 days
190454 days
190526 days
190638 days
190723 days
190819 days
190935 days
191038 days
191138 days
191224 days
191322 days
191426 days
191539 days
191645 days
191744 days
191828 days
191927 days
192022 days
192118 days
192234 days
192328 days
192420 days
192516 days
192624 days
192722 days
192826 days
192925 days
193034 days
193136 days
193227 days
193327 days
193437 days
193525 days
193632 days
193720 days
193824 days
193944 days
194047 days
194119 days
194254 days
194322 days
194440 days
194530 days
194630 days
194730 days
194837 days
194929 days
195048 days
195128 days
195233 days
195343 days
195430 days
195538 days
195644 days
195723 days
195828 days
195935 days
196032 days
196143 days
196242 days
196328 days
196443 days
196527 days
196638 days
196713 days
197037 days
197133 days
197249 days
197327 days
197435 days
197529 days
197641 days
197835 days
197938 days
198044 days
198124 days
198221 days
198316 days
198426 days
198523 days
198623 days
198725 days
198826 days
198935 days
199021 days
199123 days
199233 days
199318 days
199436 days
199521 days
199620 days
199725 days
199820 days
199923 days
202313 days
202428 days
202527 days
202625 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

80 years with a frost

Across 80 years with a frost, the median last spring frost at Collbran falls on 29 May and the median first autumn frost on 23 September, which leaves a median of 117 days between them.

In 1957 to 2025 the median growing season was 124 days. That is 11 days more than in 1901 to 1934.

Fitted over all years, the growing season changes by +1.2 days per decade at this station.

Frost dates and growing season at Collbran
MeasureMedian, all yearsEarliest period (1901 to 1934)Recent period (1957 to 2025)Recent against earliestFitted trend
Last spring frost29 May31 May25 May6 days earlier-0.6 days per decade
First autumn frost23 September20 September26 September6 days later+0.7 days per decade
Growing days117 days113 days124 days11 days more+1.2 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

93 years, 1893 to 2025

A day with at least 24.6 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 53.6 mm (2.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Collbran: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years24.6 mm (1.0 in)
5 years31.7 mm (1.2 in)
10 years36.7 mm (1.4 in)
25 years43.3 mm (1.7 in)
50 years48.3 mm (1.9 in)
100 years53.6 mm (2.1 in)Longer than the 93 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 93 years of values from 1893 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: 62.2 mm (2.4 in) in 1957; 50.0 mm (2.0 in) in 1914; 47.0 mm (1.9 in) in 1993.

Station Changes

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

Download the Data

  • Data for Collbran standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Collbran 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).