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Built 2026-10-19 (19 October 2026)

Colusa 2 SSW Threshold Days by Year (USC00041948)

15 fixed thresholds counted per year at Colusa 2 SSW (USC00041948): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Colusa 2 SSW Thresholds

  • Colusa 2 SSW: nights with a minimum temperature at or below 0 C (32 F) in 66 years, most in 1949 with 63.
  • Colusa 2 SSW: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1998 with 26.
  • Colusa 2 SSW: days with a maximum temperature at or above 30 C (86 F) in 64 years, most in 2024 with 156.
  • Colusa 2 SSW: days with a maximum temperature at or above 35 C (95 F) in 64 years, most in 1958 with 79.
  • 15 fixed thresholds have at least one qualifying day at Colusa 2 SSW.
64 years with a qualifying day
Days at or above 30 C (86 F) per year at Colusa 2 SSW Days per year at Colusa 2 SSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 156 in 2024. 0501001502001949: 1221950: 1191952: 1091954: 1161955: 1291956: 1261957: 1161958: 1311959: 1261960: 1281961: 1181962: 1171963: 1081964: 1191965: 1091966: 1241967: 1221968: 1071969: 1181970: 1311971: 1201972: 1241973: 1191975: 1301976: 1161977: 1091978: 1301979: 1361980: 1011981: 1311989: 1121990: 1051991: 1251992: 1331993: 1071994: 1061995: 881996: 1151997: 1201998: 841999: 1002000: 1042001: 1242002: 1262003: 1252004: 1282005: 1082006: 1292007: 1212009: 1242010: 792011: 1002014: 1162015: 1362016: 1292017: 1342018: 1242019: 1152020: 1522021: 1252022: 1422023: 1202024: 1562026: 1321949195819651972198019942001200920182026
Days per year at Colusa 2 SSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 156 in 2024.
Days at or above 30 C (86 F) per year at Colusa 2 SSW
YearDaysDecade average
1949122122
1950119121.5
1952109121.5
1954116121.5
1955129121.5
1956126121.5
1957116121.5
1958131121.5
1959126121.5
1960128117
1961118117
1962117117
1963108117
1964119117
1965109117
1966124117
1967122117
1968107117
1969118117
1970131123.9
1971120123.9
1972124123.9
1973119123.9
1975130123.9
1976116123.9
1977109123.9
1978130123.9
1979136123.9
1980101114.7
1981131114.7
1989112114.7
1990105108.3
1991125108.3
1992133108.3
1993107108.3
1994106108.3
199588108.3
1996115108.3
1997120108.3
199884108.3
1999100108.3
2000104121
2001124121
2002126121
2003125121
2004128121
2005108121
2006129121
2007121121
2009124121
201079116.6
2011100116.6
2014116116.6
2015136116.6
2016129116.6
2017134116.6
2018124116.6
2019115116.6
2020152137.8
2021125137.8
2022142137.8
2023120137.8
2024156137.8
2026132137.8
First to last qualifying date each year at Colusa 2 SSW For each year, a bar from the first to the last day at Colusa 2 SSW meeting 30 C (86 F). 1949: 22 April 1949 to 31 October 19491950: 18 April 1950 to 14 October 19501952: 18 April 1952 to 13 October 19521954: 15 April 1954 to 15 October 19541955: 5 May 1955 to 9 November 19551956: 19 April 1956 to 20 October 19561957: 5 April 1957 to 24 September 19571958: 4 May 1958 to 16 October 19581959: 23 April 1959 to 25 October 19591960: 4 April 1960 to 16 October 19601961: 3 April 1961 to 18 October 19611962: 6 April 1962 to 2 October 19621963: 16 May 1963 to 3 October 19631964: 12 April 1964 to 22 October 19641965: 25 April 1965 to 24 October 19651966: 30 March 1966 to 31 October 19661967: 8 May 1967 to 1 November 19671968: 9 April 1968 to 29 September 19681969: 5 May 1969 to 21 October 19691970: 1 May 1970 to 10 October 19701971: 10 May 1971 to 13 October 19711972: 16 March 1972 to 6 October 19721973: 25 April 1973 to 30 September 19731975: 12 May 1975 to 20 October 19751976: 30 April 1976 to 15 October 19761977: 15 April 1977 to 16 October 19771978: 8 May 1978 to 24 October 19781979: 12 May 1979 to 11 October 19791980: 17 May 1980 to 10 October 19801981: 28 April 1981 to 1 October 19811989: 7 April 1989 to 19 October 19891990: 14 April 1990 to 15 October 19901991: 22 May 1991 to 22 October 19911992: 29 April 1992 to 12 October 19921993: 28 April 1993 to 27 October 19931994: 15 April 1994 to 2 October 19941995: 24 April 1995 to 21 October 19951996: 26 April 1996 to 11 October 19961997: 15 April 1997 to 21 October 19971998: 19 April 1998 to 21 October 19981999: 16 April 1999 to 21 October 19992000: 3 April 2000 to 2 October 20002001: 30 March 2001 to 18 October 20012002: 30 March 2002 to 15 October 20022003: 14 May 2003 to 29 October 20032004: 15 March 2004 to 16 October 20042005: 15 May 2005 to 18 October 20052006: 28 April 2006 to 23 October 20062007: 16 March 2007 to 28 September 20072009: 19 April 2009 to 29 September 20092010: 27 April 2010 to 15 October 20102011: 3 May 2011 to 17 October 20112014: 6 April 2014 to 30 October 20142015: 28 March 2015 to 18 October 20152016: 7 April 2016 to 12 October 20162017: 1 May 2017 to 30 October 20172018: 30 March 2018 to 17 October 20182019: 20 April 2019 to 9 October 20192020: 25 April 2020 to 23 October 20202021: 19 April 2021 to 7 October 20212022: 23 March 2022 to 22 October 20222023: 26 April 2023 to 21 October 20232024: 20 April 2024 to 22 October 20242026: 17 March 2026 to 30 September 202619491959196719761991199920072018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Colusa 2 SSW meeting 30 C (86 F).
First to last qualifying date each year at Colusa 2 SSW
YearFirst dateLast date
19491949-04-221949-10-31
19501950-04-181950-10-14
19521952-04-181952-10-13
19541954-04-151954-10-15
19551955-05-051955-11-09
19561956-04-191956-10-20
19571957-04-051957-09-24
19581958-05-041958-10-16
19591959-04-231959-10-25
19601960-04-041960-10-16
19611961-04-031961-10-18
19621962-04-061962-10-02
19631963-05-161963-10-03
19641964-04-121964-10-22
19651965-04-251965-10-24
19661966-03-301966-10-31
19671967-05-081967-11-01
19681968-04-091968-09-29
19691969-05-051969-10-21
19701970-05-011970-10-10
19711971-05-101971-10-13
19721972-03-161972-10-06
19731973-04-251973-09-30
19751975-05-121975-10-20
19761976-04-301976-10-15
19771977-04-151977-10-16
19781978-05-081978-10-24
19791979-05-121979-10-11
19801980-05-171980-10-10
19811981-04-281981-10-01
19891989-04-071989-10-19
19901990-04-141990-10-15
19911991-05-221991-10-22
19921992-04-291992-10-12
19931993-04-281993-10-27
19941994-04-151994-10-02
19951995-04-241995-10-21
19961996-04-261996-10-11
19971997-04-151997-10-21
19981998-04-191998-10-21
19991999-04-161999-10-21
20002000-04-032000-10-02
20012001-03-302001-10-18
20022002-03-302002-10-15
20032003-05-142003-10-29
20042004-03-152004-10-16
20052005-05-152005-10-18
20062006-04-282006-10-23
20072007-03-162007-09-28
20092009-04-192009-09-29
20102010-04-272010-10-15
20112011-05-032011-10-17
20142014-04-062014-10-30
20152015-03-282015-10-18
20162016-04-072016-10-12
20172017-05-012017-10-30
20182018-03-302018-10-17
20192019-04-202019-10-09
20202020-04-252020-10-23
20212021-04-192021-10-07
20222022-03-232022-10-22
20232023-04-262023-10-21
20242024-04-202024-10-22
20262026-03-172026-09-30

Every Fixed Threshold

Fixed thresholds at Colusa 2 SSW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days641562024132
35 C (95 F): Days6479195861
40 C (104 F): Days592119605
45 C (113 F): Days2219781
90 F (32.2 C): Days641172020110
100 F (37.8 C): Days6447196014
110 F (43.3 C): Days13419503
0 C (32 F): Ice days (max2119721
0 C (32 F): Frost days (min6663194929
-10 C (14 F): Days with min1220222
20 C (68 F): Tropical nights (min621820171
25 C (77 F): Days with min4320171
10 mm (0.39 in): Days with 10 mm or more rain652619985
25 mm (0.98 in): Days with 25 mm or more rain56619582
50 mm (1.97 in): Days with 50 mm or more rain10219621

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Colusa 2 SSW 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-12).