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Built 2026-10-19 (19 October 2026)

Humboldt Threshold Days by Year (USC00143867)

18 fixed thresholds counted per year at Humboldt (USC00143867): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Humboldt Thresholds

  • Humboldt: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 2008 with 43.
  • Humboldt: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 2009 with 21.
  • Humboldt: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 2005 with 106.
  • Humboldt: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 2012 with 48.
  • 18 fixed thresholds have at least one qualifying day at Humboldt.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Humboldt Days per year at Humboldt with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2005. 0501001501997: 681998: 1011999: 702000: 922001: 912002: 982003: 812004: 592005: 1062006: 902007: 792008: 542009: 502010: 902011: 962012: 992013: 732014: 662015: 632016: 742017: 722018: 932019: 762020: 822021: 822022: 1032023: 1032024: 982025: 762026: 1001997200020032006200920122015201820212024
Days per year at Humboldt with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2005.
Days at or above 30 C (86 F) per year at Humboldt
YearDaysDecade average
19976879.7
199810179.7
19997079.7
20009280
20019180
20029880
20038180
20045980
200510680
20069080
20077980
20085480
20095080
20109080.2
20119680.2
20129980.2
20137380.2
20146680.2
20156380.2
20167480.2
20177280.2
20189380.2
20197680.2
20208292
20218292
202210392
202310392
20249892
20257692
202610092
First to last qualifying date each year at Humboldt For each year, a bar from the first to the last day at Humboldt meeting 30 C (86 F). 1997: 18 May 1997 to 7 October 19971998: 14 May 1998 to 30 September 19981999: 4 June 1999 to 26 September 19992000: 9 May 2000 to 4 October 20002001: 10 April 2001 to 14 September 20012002: 14 April 2002 to 4 October 20022003: 10 May 2003 to 22 October 20032004: 7 May 2004 to 26 September 20042005: 11 May 2005 to 19 October 20052006: 14 April 2006 to 4 October 20062007: 13 May 2007 to 7 October 20072008: 20 May 2008 to 29 September 20082009: 24 April 2009 to 28 September 20092010: 7 May 2010 to 9 October 20102011: 4 April 2011 to 5 October 20112012: 2 April 2012 to 26 September 20122013: 15 May 2013 to 5 October 20132014: 4 May 2014 to 26 October 20142015: 8 April 2015 to 10 October 20152016: 9 June 2016 to 18 October 20162017: 20 March 2017 to 15 October 20172018: 7 May 2018 to 6 October 20182019: 16 May 2019 to 3 October 20192020: 9 April 2020 to 15 October 20202021: 9 June 2021 to 10 October 20212022: 10 May 2022 to 28 September 20222023: 7 May 2023 to 3 October 20232024: 15 April 2024 to 29 October 20242025: 14 April 2025 to 13 October 20252026: 21 March 2026 to 14 October 202619972001200520092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Humboldt meeting 30 C (86 F).
First to last qualifying date each year at Humboldt
YearFirst dateLast date
19971997-05-181997-10-07
19981998-05-141998-09-30
19991999-06-041999-09-26
20002000-05-092000-10-04
20012001-04-102001-09-14
20022002-04-142002-10-04
20032003-05-102003-10-22
20042004-05-072004-09-26
20052005-05-112005-10-19
20062006-04-142006-10-04
20072007-05-132007-10-07
20082008-05-202008-09-29
20092009-04-242009-09-28
20102010-05-072010-10-09
20112011-04-042011-10-05
20122012-04-022012-09-26
20132013-05-152013-10-05
20142014-05-042014-10-26
20152015-04-082015-10-10
20162016-06-092016-10-18
20172017-03-202017-10-15
20182018-05-072018-10-06
20192019-05-162019-10-03
20202020-04-092020-10-15
20212021-06-092021-10-10
20222022-05-102022-09-28
20232023-05-072023-10-03
20242024-04-152024-10-29
20252025-04-142025-10-13
20262026-03-212026-10-14

Every Fixed Threshold

Fixed thresholds at Humboldt
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days301062005100
35 C (95 F): Days3048201238
40 C (104 F): Days8820112
90 F (32.2 C): Days3078202270
100 F (37.8 C): Days1732201117
0 C (32 F): Ice days (max3032201310
0 C (32 F): Frost days (min30129200852
-10 C (14 F): Days with min3036201413
-20 C (-4 F): Days with min14520112
20 C (68 F): Tropical nights (min3074201170
25 C (77 F): Days with min2114201112
10 mm (0.39 in): Days with 10 mm or more rain3143200828
25 mm (0.98 in): Days with 25 mm or more rain3121200914
50 mm (1.97 in): Days with 50 mm or more rain281020195
100 mm (3.94 in): Days with 100 mm or more rain13320071
200 mm (7.87 in): Days with 200 mm or more rain1120241
10 cm (3.9 in): Days with 10 cm or more snowfall12220001
25 cm (9.8 in): Days with 25 cm or more snowfall1120061

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1997.

Download the Data

  • Data for Humboldt 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 (2026-10-17).