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Built 2026-10-18 (18 October 2026)

Winchester Threshold Days by Year

16 fixed thresholds counted per year at Winchester (USC00359461): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Winchester Thresholds

  • Winchester: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1996 with 54.
  • Winchester: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1996 with 12.
  • Winchester: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 2021 with 71.
  • Winchester: days with a maximum temperature at or above 35 C (95 F) in 36 years, most in 2024 with 26.
  • 16 fixed thresholds have at least one qualifying day at Winchester.
36 years with a qualifying day
Days at or above 30 C (86 F) per year at Winchester Days per year at Winchester with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 2021. 0204060801990: 331991: 411993: 201994: 311995: 351996: 431997: 311998: 431999: 402000: 352001: 262002: 452003: 512004: 402005: 382006: 502007: 362008: 522009: 492010: 352011: 322012: 332013: 422014: 572015: 642016: 552017: 622018: 542019: 422020: 532021: 712022: 522023: 582024: 702025: 672026: 35199019951999200320072011201520192023
Days per year at Winchester with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 2021.
Days at or above 30 C (86 F) per year at Winchester
YearDaysDecade average
19903335.2
19914135.2
19932035.2
19943135.2
19953535.2
19964335.2
19973135.2
19984335.2
19994035.2
20003542.2
20012642.2
20024542.2
20035142.2
20044042.2
20053842.2
20065042.2
20073642.2
20085242.2
20094942.2
20103547.6
20113247.6
20123347.6
20134247.6
20145747.6
20156447.6
20165547.6
20176247.6
20185447.6
20194247.6
20205358
20217158
20225258
20235858
20247058
20256758
20263558
First to last qualifying date each year at Winchester For each year, a bar from the first to the last day at Winchester meeting 30 C (86 F). 1990: 5 May 1990 to 23 September 19901991: 3 July 1991 to 16 October 19911993: 19 June 1993 to 1 October 19931994: 11 May 1994 to 28 September 19941995: 29 May 1995 to 23 September 19951996: 2 June 1996 to 10 October 19961997: 12 May 1997 to 30 September 19971998: 30 April 1998 to 16 September 19981999: 16 April 1999 to 23 September 19992000: 4 June 2000 to 8 October 20002001: 22 May 2001 to 2 October 20012002: 13 June 2002 to 24 September 20022003: 23 May 2003 to 28 September 20032004: 26 April 2004 to 11 September 20042005: 26 May 2005 to 2 September 20052006: 15 May 2006 to 30 September 20062007: 30 May 2007 to 12 September 20072008: 13 April 2008 to 17 September 20082009: 18 May 2009 to 24 September 20092010: 28 June 2010 to 28 September 20102011: 22 June 2011 to 30 September 20112012: 23 April 2012 to 27 September 20122013: 6 May 2013 to 14 September 20132014: 1 May 2014 to 8 October 20142015: 28 April 2015 to 16 October 20152016: 8 April 2016 to 27 September 20162017: 4 May 2017 to 29 September 20172018: 26 April 2018 to 29 September 20182019: 10 May 2019 to 13 September 20192020: 9 May 2020 to 4 October 20202021: 17 May 2021 to 26 September 20212022: 23 June 2022 to 3 October 20222023: 29 April 2023 to 8 October 20232024: 11 May 2024 to 8 October 20242025: 2 May 2025 to 28 September 20252026: 4 June 2026 to 11 September 202619901996200120062011201620212026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Winchester meeting 30 C (86 F).
First to last qualifying date each year at Winchester
YearFirst dateLast date
19901990-05-051990-09-23
19911991-07-031991-10-16
19931993-06-191993-10-01
19941994-05-111994-09-28
19951995-05-291995-09-23
19961996-06-021996-10-10
19971997-05-121997-09-30
19981998-04-301998-09-16
19991999-04-161999-09-23
20002000-06-042000-10-08
20012001-05-222001-10-02
20022002-06-132002-09-24
20032003-05-232003-09-28
20042004-04-262004-09-11
20052005-05-262005-09-02
20062006-05-152006-09-30
20072007-05-302007-09-12
20082008-04-132008-09-17
20092009-05-182009-09-24
20102010-06-282010-09-28
20112011-06-222011-09-30
20122012-04-232012-09-27
20132013-05-062013-09-14
20142014-05-012014-10-08
20152015-04-282015-10-16
20162016-04-082016-09-27
20172017-05-042017-09-29
20182018-04-262018-09-29
20192019-05-102019-09-13
20202020-05-092020-10-04
20212021-05-172021-09-26
20222022-06-232022-10-03
20232023-04-292023-10-08
20242024-05-112024-10-08
20252025-05-022025-09-28
20262026-06-042026-09-11

Every Fixed Threshold

Fixed thresholds at Winchester
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3671202135
35 C (95 F): Days362620246
40 C (104 F): Days14720241
90 F (32.2 C): Days3650202123
100 F (37.8 C): Days2415202410
110 F (43.3 C): Days3320243
0 C (32 F): Ice days (max7619901
0 C (32 F): Frost days (min3572199324
-10 C (14 F): Days with min4419902
20 C (68 F): Tropical nights (min6320091
10 mm (0.39 in): Days with 10 mm or more rain7654199612
25 mm (0.98 in): Days with 25 mm or more rain761219962
50 mm (1.97 in): Days with 50 mm or more rain31419611
100 mm (3.94 in): Days with 100 mm or more rain4119551
10 cm (3.9 in): Days with 10 cm or more snowfall6219691
25 cm (9.8 in): Days with 25 cm or more snowfall1219692

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Winchester 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).