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Built 2026-10-19 (19 October 2026)

Harrison Threshold Days by Year (USC00283704)

18 fixed thresholds counted per year at Harrison (USC00283704): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Harrison Thresholds

  • Harrison: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 2018 with 60.
  • Harrison: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 2011 with 23.
  • Harrison: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 2021 with 9.
  • Harrison: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 2002 with 74.
  • 18 fixed thresholds have at least one qualifying day at Harrison.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at Harrison Days per year at Harrison with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 74 in 2002. 0204060801996: 341997: 391998: 651999: 582001: 582002: 742003: 362004: 432005: 692006: 502007: 482008: 462010: 692011: 542012: 572013: 492014: 382015: 702016: 682017: 502018: 682019: 672020: 642021: 552022: 692023: 492024: 672025: 682026: 761996199920032006201020132016201920222025
Days per year at Harrison with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 74 in 2002.
Days at or above 30 C (86 F) per year at Harrison
YearDaysDecade average
19963449
19973949
19986549
19995849
20015853
20027453
20033653
20044353
20056953
20065053
20074853
20084653
20106959
20115459
20125759
20134959
20143859
20157059
20166859
20175059
20186859
20196759
20206464
20215564
20226964
20234964
20246764
20256864
20267664
First to last qualifying date each year at Harrison For each year, a bar from the first to the last day at Harrison meeting 30 C (86 F). 1996: 24 April 1996 to 11 September 19961997: 10 June 1997 to 6 October 19971998: 31 March 1998 to 27 September 19981999: 29 May 1999 to 9 September 19992001: 22 April 2001 to 13 September 20012002: 16 April 2002 to 3 October 20022003: 16 April 2003 to 30 August 20032004: 19 April 2004 to 23 September 20042005: 20 April 2005 to 23 September 20052006: 29 May 2006 to 24 August 20062007: 23 April 2007 to 8 October 20072008: 7 June 2008 to 14 September 20082010: 7 April 2010 to 25 September 20102011: 29 May 2011 to 9 October 20112012: 16 April 2012 to 8 September 20122013: 22 May 2013 to 5 October 20132014: 13 May 2014 to 29 September 20142015: 5 May 2015 to 19 September 20152016: 26 May 2016 to 20 October 20162017: 17 April 2017 to 28 September 20172018: 3 May 2018 to 27 September 20182019: 21 May 2019 to 3 October 20192020: 16 May 2020 to 11 September 20202021: 29 April 2021 to 19 September 20212022: 15 April 2022 to 20 September 20222023: 14 April 2023 to 5 October 20232024: 30 April 2024 to 15 September 20242025: 20 April 2025 to 6 October 20252026: 15 April 2026 to 3 October 202619962001200520102014201820222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Harrison meeting 30 C (86 F).
First to last qualifying date each year at Harrison
YearFirst dateLast date
19961996-04-241996-09-11
19971997-06-101997-10-06
19981998-03-311998-09-27
19991999-05-291999-09-09
20012001-04-222001-09-13
20022002-04-162002-10-03
20032003-04-162003-08-30
20042004-04-192004-09-23
20052005-04-202005-09-23
20062006-05-292006-08-24
20072007-04-232007-10-08
20082008-06-072008-09-14
20102010-04-072010-09-25
20112011-05-292011-10-09
20122012-04-162012-09-08
20132013-05-222013-10-05
20142014-05-132014-09-29
20152015-05-052015-09-19
20162016-05-262016-10-20
20172017-04-172017-09-28
20182018-05-032018-09-27
20192019-05-212019-10-03
20202020-05-162020-09-11
20212021-04-292021-09-19
20222022-04-152022-09-20
20232023-04-142023-10-05
20242024-04-302024-09-15
20252025-04-202025-10-06
20262026-04-152026-10-03

Every Fixed Threshold

Fixed thresholds at Harrison
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2974200276
35 C (95 F): Days2722200211
40 C (104 F): Days4120011
90 F (32.2 C): Days2950201036
100 F (37.8 C): Days18620254
0 C (32 F): Ice days (max2931201520
0 C (32 F): Frost days (min2699201462
-10 C (14 F): Days with min2425201515
20 C (68 F): Tropical nights (min2676200559
25 C (77 F): Days with min231419993
10 mm (0.39 in): Days with 10 mm or more rain3160201834
25 mm (0.98 in): Days with 25 mm or more rain3123201118
50 mm (1.97 in): Days with 50 mm or more rain30920214
100 mm (3.94 in): Days with 100 mm or more rain10220112
200 mm (7.87 in): Days with 200 mm or more rain1120211
10 cm (3.9 in): Days with 10 cm or more snowfall23520033
25 cm (9.8 in): Days with 25 cm or more snowfall8320101
50 cm (19.7 in): Days with 50 cm or more snowfall1119961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Harrison 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).