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Built 2026-10-19 (19 October 2026)

Diamond 2W Threshold Days by Year (USC00232240)

18 fixed thresholds counted per year at Diamond 2W (USC00232240): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Diamond 2W Thresholds

  • Diamond 2W: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1985 with 47.
  • Diamond 2W: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1985 with 23.
  • Diamond 2W: days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 2008 with 10.
  • Diamond 2W: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 2002 with 106.
  • 18 fixed thresholds have at least one qualifying day at Diamond 2W.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Diamond 2W Days per year at Diamond 2W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2002. 0501001501993: 641994: 681995: 731996: 761997: 521998: 872000: 802001: 932002: 1062003: 682006: 772008: 342009: 542010: 1002011: 1002012: 1062013: 822014: 742015: 752016: 962017: 722018: 1042019: 792020: 882021: 892022: 1052023: 992024: 942025: 972026: 1021993199620002003200920122015201820212024
Days per year at Diamond 2W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2002.
Days at or above 30 C (86 F) per year at Diamond 2W
YearDaysDecade average
19936470
19946870
19957370
19967670
19975270
19988770
20008073.1
20019373.1
200210673.1
20036873.1
20067773.1
20083473.1
20095473.1
201010088.8
201110088.8
201210688.8
20138288.8
20147488.8
20157588.8
20169688.8
20177288.8
201810488.8
20197988.8
20208896.3
20218996.3
202210596.3
20239996.3
20249496.3
20259796.3
202610296.3
First to last qualifying date each year at Diamond 2W For each year, a bar from the first to the last day at Diamond 2W meeting 30 C (86 F). 1993: 14 June 1993 to 23 September 19931994: 1 June 1994 to 1 October 19941995: 23 March 1995 to 17 October 19951996: 23 February 1996 to 16 September 19961997: 20 June 1997 to 20 September 19971998: 14 May 1998 to 30 September 19982000: 23 May 2000 to 4 October 20002001: 11 May 2001 to 19 September 20012002: 31 May 2002 to 3 October 20022003: 29 May 2003 to 9 September 20032006: 14 April 2006 to 4 October 20062008: 26 May 2008 to 13 September 20082009: 31 May 2009 to 27 August 20092010: 23 May 2010 to 24 September 20102011: 9 April 2011 to 17 October 20112012: 2 April 2012 to 26 September 20122013: 30 April 2013 to 5 October 20132014: 5 May 2014 to 27 October 20142015: 5 June 2015 to 16 October 20152016: 11 May 2016 to 18 October 20162017: 19 May 2017 to 15 October 20172018: 7 May 2018 to 7 October 20182019: 11 April 2019 to 3 October 20192020: 9 April 2020 to 23 October 20202021: 9 June 2021 to 10 October 20212022: 10 May 2022 to 24 October 20222023: 4 April 2023 to 8 November 20232024: 15 April 2024 to 29 October 20242025: 14 April 2025 to 18 October 20252026: 20 March 2026 to 14 October 202619931997200220092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Diamond 2W meeting 30 C (86 F).
First to last qualifying date each year at Diamond 2W
YearFirst dateLast date
19931993-06-141993-09-23
19941994-06-011994-10-01
19951995-03-231995-10-17
19961996-02-231996-09-16
19971997-06-201997-09-20
19981998-05-141998-09-30
20002000-05-232000-10-04
20012001-05-112001-09-19
20022002-05-312002-10-03
20032003-05-292003-09-09
20062006-04-142006-10-04
20082008-05-262008-09-13
20092009-05-312009-08-27
20102010-05-232010-09-24
20112011-04-092011-10-17
20122012-04-022012-09-26
20132013-04-302013-10-05
20142014-05-052014-10-27
20152015-06-052015-10-16
20162016-05-112016-10-18
20172017-05-192017-10-15
20182018-05-072018-10-07
20192019-04-112019-10-03
20202020-04-092020-10-23
20212021-06-092021-10-10
20222022-05-102022-10-24
20232023-04-042023-11-08
20242024-04-152024-10-29
20252025-04-142025-10-18
20262026-03-202026-10-14

Every Fixed Threshold

Fixed thresholds at Diamond 2W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days301062002102
35 C (95 F): Days3057201238
40 C (104 F): Days51220126
90 F (32.2 C): Days3083201272
100 F (37.8 C): Days1233201221
110 F (43.3 C): Days1120111
0 C (32 F): Ice days (max302420147
0 C (32 F): Frost days (min25121200856
-10 C (14 F): Days with min2527199619
-20 C (-4 F): Days with min10519972
20 C (68 F): Tropical nights (min2575201150
25 C (77 F): Days with min141120112
10 mm (0.39 in): Days with 10 mm or more rain4547198524
25 mm (0.98 in): Days with 25 mm or more rain4523198513
50 mm (1.97 in): Days with 50 mm or more rain411020082
100 mm (3.94 in): Days with 100 mm or more rain15219801
10 cm (3.9 in): Days with 10 cm or more snowfall9320021
25 cm (9.8 in): Days with 25 cm or more snowfall2119941

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1993.

Download the Data

  • Data for Diamond 2W 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).