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Built 2026-10-19 (19 October 2026)

Crofton Threshold Days by Year (USC00252037)

18 fixed thresholds counted per year at Crofton (USC00252037): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Crofton Thresholds

  • Crofton: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1993 with 35.
  • Crofton: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 2010 with 12.
  • Crofton: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 2012 with 82.
  • Crofton: days with a maximum temperature at or above 90 F (32.2 C) in 36 years, most in 2012 with 57.
  • 18 fixed thresholds have at least one qualifying day at Crofton.
36 years with a qualifying day
Days at or above 30 C (86 F) per year at Crofton Days per year at Crofton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2012. 02550751001989: 511990: 571991: 611992: 151993: 211994: 411995: 501996: 251997: 461998: 551999: 462000: 552001: 502002: 662003: 432004: 262005: 612006: 582007: 542008: 392009: 242010: 482012: 822013: 472014: 192015: 412016: 492017: 522018: 452019: 412020: 582021: 642022: 692023: 562024: 402025: 54198919931997200120052009201420182022
Days per year at Crofton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2012.
Days at or above 30 C (86 F) per year at Crofton
YearDaysDecade average
19895151
19905741.7
19916141.7
19921541.7
19932141.7
19944141.7
19955041.7
19962541.7
19974641.7
19985541.7
19994641.7
20005547.6
20015047.6
20026647.6
20034347.6
20042647.6
20056147.6
20065847.6
20075447.6
20083947.6
20092447.6
20104847.1
20128247.1
20134747.1
20141947.1
20154147.1
20164947.1
20175247.1
20184547.1
20194147.1
20205856.8
20216456.8
20226956.8
20235656.8
20244056.8
20255456.8
First to last qualifying date each year at Crofton For each year, a bar from the first to the last day at Crofton meeting 30 C (86 F). 1989: 22 April 1989 to 14 October 19891990: 23 April 1990 to 5 October 19901991: 5 April 1991 to 22 October 19911992: 30 April 1992 to 2 October 19921993: 7 June 1993 to 6 October 19931994: 18 April 1994 to 20 September 19941995: 6 June 1995 to 11 October 19951996: 17 May 1996 to 10 September 19961997: 16 May 1997 to 2 October 19971998: 14 May 1998 to 29 September 19981999: 28 May 1999 to 27 October 19992000: 4 May 2000 to 30 September 20002001: 28 April 2001 to 2 October 20012002: 15 April 2002 to 30 September 20022003: 14 April 2003 to 19 October 20032004: 18 April 2004 to 19 September 20042005: 21 May 2005 to 18 October 20052006: 13 April 2006 to 3 October 20062007: 29 April 2007 to 6 October 20072008: 14 June 2008 to 26 September 20082009: 23 April 2009 to 24 August 20092010: 22 May 2010 to 8 October 20102012: 1 April 2012 to 11 September 20122013: 28 April 2013 to 26 September 20132014: 27 May 2014 to 19 September 20142015: 1 April 2015 to 11 October 20152016: 6 May 2016 to 23 September 20162017: 2 June 2017 to 22 September 20172018: 23 May 2018 to 3 October 20182019: 16 May 2019 to 30 September 20192020: 1 June 2020 to 6 October 20202021: 5 April 2021 to 28 September 20212022: 22 April 2022 to 20 September 20222023: 11 April 2023 to 2 October 20232024: 13 April 2024 to 29 September 20242025: 28 March 2025 to 30 September 202519891994199920042009201520202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Crofton meeting 30 C (86 F).
First to last qualifying date each year at Crofton
YearFirst dateLast date
19891989-04-221989-10-14
19901990-04-231990-10-05
19911991-04-051991-10-22
19921992-04-301992-10-02
19931993-06-071993-10-06
19941994-04-181994-09-20
19951995-06-061995-10-11
19961996-05-171996-09-10
19971997-05-161997-10-02
19981998-05-141998-09-29
19991999-05-281999-10-27
20002000-05-042000-09-30
20012001-04-282001-10-02
20022002-04-152002-09-30
20032003-04-142003-10-19
20042004-04-182004-09-19
20052005-05-212005-10-18
20062006-04-132006-10-03
20072007-04-292007-10-06
20082008-06-142008-09-26
20092009-04-232009-08-24
20102010-05-222010-10-08
20122012-04-012012-09-11
20132013-04-282013-09-26
20142014-05-272014-09-19
20152015-04-012015-10-11
20162016-05-062016-09-23
20172017-06-022017-09-22
20182018-05-232018-10-03
20192019-05-162019-09-30
20202020-06-012020-10-06
20212021-04-052021-09-28
20222022-04-222022-09-20
20232023-04-112023-10-02
20242024-04-132024-09-29
20252025-03-282025-09-30

Every Fixed Threshold

Fixed thresholds at Crofton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3682201254
35 C (95 F): Days303220123
40 C (104 F): Days3119891
90 F (32.2 C): Days3657201218
100 F (37.8 C): Days10820121
0 C (32 F): Ice days (max3678201033
0 C (32 F): Frost days (min36182201394
-10 C (14 F): Days with min3678201441
-20 C (-4 F): Days with min3626199611
-30 C (-22 F): Days with min10420101
20 C (68 F): Tropical nights (min3636200217
25 C (77 F): Days with min13519911
10 mm (0.39 in): Days with 10 mm or more rain3735199322
25 mm (0.98 in): Days with 25 mm or more rain3712201010
50 mm (1.97 in): Days with 50 mm or more rain28520101
100 mm (3.94 in): Days with 100 mm or more rain3119961
10 cm (3.9 in): Days with 10 cm or more snowfall34719942
25 cm (9.8 in): Days with 25 cm or more snowfall6119971

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1989.

Download the Data

  • Data for Crofton 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 (2025-12-31).