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Built 2026-10-19 (19 October 2026)

Winchester Threshold Days by Year (USC00449181)

18 fixed thresholds counted per year at Winchester (USC00449181): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Winchester Thresholds

  • Winchester: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 2019 with 93.
  • Winchester: days with a maximum temperature at or above 90 F (32.2 C) in 34 years, most in 2019 with 55.
  • Winchester: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1996 with 29.
  • Winchester: days with 10 mm (0.39 in) or more of precipitation in 34 years, most in 2018 with 54.
  • 18 fixed thresholds have at least one qualifying day at Winchester.
34 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 93 in 2019. 02550751001983: 651984: 401985: 351986: 551987: 511988: 381989: 261991: 621992: 191994: 471995: 581996: 211997: 391998: 701999: 612000: 332001: 332002: 652003: 322004: 352005: 542006: 522007: 602008: 382009: 272010: 732011: 512012: 422014: 332015: 552016: 652017: 672018: 632019: 93198319871992199720012005200920142018
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 93 in 2019.
Days at or above 30 C (86 F) per year at Winchester
YearDaysDecade average
19836544.3
19844044.3
19853544.3
19865544.3
19875144.3
19883844.3
19892644.3
19916247.1
19921947.1
19944747.1
19955847.1
19962147.1
19973947.1
19987047.1
19996147.1
20003342.9
20013342.9
20026542.9
20033242.9
20043542.9
20055442.9
20065242.9
20076042.9
20083842.9
20092742.9
20107360.2
20115160.2
20124260.2
20143360.2
20155560.2
20166560.2
20176760.2
20186360.2
20199360.2
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). 1983: 13 June 1983 to 21 September 19831984: 20 May 1984 to 25 September 19841985: 19 April 1985 to 11 September 19851986: 6 May 1986 to 3 October 19861987: 19 May 1987 to 31 August 19871988: 31 May 1988 to 21 September 19881989: 31 May 1989 to 11 September 19891991: 9 April 1991 to 31 August 19911992: 3 May 1992 to 28 August 19921994: 20 April 1994 to 15 September 19941995: 20 April 1995 to 15 September 19951996: 13 April 1996 to 24 August 19961997: 20 May 1997 to 7 October 19971998: 31 March 1998 to 1 October 19981999: 23 April 1999 to 10 September 19992000: 7 May 2000 to 5 September 20002001: 10 April 2001 to 31 August 20012002: 17 April 2002 to 21 September 20022003: 16 April 2003 to 31 August 20032004: 19 April 2004 to 30 August 20042005: 12 May 2005 to 24 September 20052006: 29 May 2006 to 30 August 20062007: 16 May 2007 to 10 October 20072008: 6 June 2008 to 15 September 20082009: 26 April 2009 to 24 September 20092010: 7 April 2010 to 26 September 20102011: 12 April 2011 to 15 September 20112012: 17 April 2012 to 8 September 20122014: 9 May 2014 to 7 September 20142015: 12 May 2015 to 10 September 20152016: 19 April 2016 to 24 September 20162017: 12 April 2017 to 11 October 20172018: 14 April 2018 to 9 October 20182019: 24 April 2019 to 4 October 20191983198819952000200520102016JanFebMarAprMayJunJulAugSepOctNovDec
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
19831983-06-131983-09-21
19841984-05-201984-09-25
19851985-04-191985-09-11
19861986-05-061986-10-03
19871987-05-191987-08-31
19881988-05-311988-09-21
19891989-05-311989-09-11
19911991-04-091991-08-31
19921992-05-031992-08-28
19941994-04-201994-09-15
19951995-04-201995-09-15
19961996-04-131996-08-24
19971997-05-201997-10-07
19981998-03-311998-10-01
19991999-04-231999-09-10
20002000-05-072000-09-05
20012001-04-102001-08-31
20022002-04-172002-09-21
20032003-04-162003-08-31
20042004-04-192004-08-30
20052005-05-122005-09-24
20062006-05-292006-08-30
20072007-05-162007-10-10
20082008-06-062008-09-15
20092009-04-262009-09-24
20102010-04-072010-09-26
20112011-04-122011-09-15
20122012-04-172012-09-08
20142014-05-092014-09-07
20152015-05-122015-09-10
20162016-04-192016-09-24
20172017-04-122017-10-11
20182018-04-142018-10-09
20192019-04-242019-10-04

Every Fixed Threshold

Fixed thresholds at Winchester
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3493201993
35 C (95 F): Days2619199916
40 C (104 F): Days1119881
90 F (32.2 C): Days3455201955
100 F (37.8 C): Days9319882
0 C (32 F): Ice days (max342919969
0 C (32 F): Frost days (min321192018111
-10 C (14 F): Days with min3229201412
-20 C (-4 F): Days with min4419941
20 C (68 F): Tropical nights (min3246201635
25 C (77 F): Days with min6119991
10 mm (0.39 in): Days with 10 mm or more rain3454201834
25 mm (0.98 in): Days with 25 mm or more rain341819967
50 mm (1.97 in): Days with 50 mm or more rain25419961
100 mm (3.94 in): Days with 100 mm or more rain2119921
10 cm (3.9 in): Days with 10 cm or more snowfall24620031
25 cm (9.8 in): Days with 25 cm or more snowfall4219831
50 cm (19.7 in): Days with 50 cm or more snowfall1120101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1983.

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 (2025-12-31).