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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Winston Threshold Days by Year (USC00299806)

16 fixed thresholds counted per year at Winston (USC00299806): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Winston Thresholds

  • Winston: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1996 with 20.
  • Winston: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 2006 with 6.
  • Winston: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2011 with 92.
  • Winston: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 2011 with 56.
  • 16 fixed thresholds have at least one qualifying day at Winston.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Winston Days per year at Winston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2011. 02550751001950: 531951: 861952: 761953: 841954: 631955: 481956: 791957: 461958: 711959: 721960: 641987: 411989: 571990: 411991: 221992: 351993: 501994: 671995: 501996: 701997: 501998: 471999: 162000: 652001: 512002: 582003: 672004: 542005: 742006: 422007: 492008: 392009: 512010: 662011: 922012: 752013: 611950195419581989199319972001200520092013
Days per year at Winston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2011.
Days at or above 30 C (86 F) per year at Winston
YearDaysDecade average
19505367.8
19518667.8
19527667.8
19538467.8
19546367.8
19554867.8
19567967.8
19574667.8
19587167.8
19597267.8
19606464
19874149
19895749
19904144.8
19912244.8
19923544.8
19935044.8
19946744.8
19955044.8
19967044.8
19975044.8
19984744.8
19991644.8
20006555
20015155
20025855
20036755
20045455
20057455
20064255
20074955
20083955
20095155
20106673.5
20119273.5
20127573.5
20136173.5
First to last qualifying date each year at Winston For each year, a bar from the first to the last day at Winston meeting 30 C (86 F). 1950: 24 April 1950 to 16 September 19501951: 5 May 1951 to 25 September 19511952: 7 May 1952 to 20 September 19521953: 21 May 1953 to 28 September 19531954: 10 April 1954 to 21 September 19541955: 6 June 1955 to 22 September 19551956: 4 May 1956 to 28 September 19561957: 5 June 1957 to 9 September 19571958: 23 May 1958 to 3 September 19581959: 12 May 1959 to 25 October 19591960: 15 April 1960 to 26 September 19601987: 2 June 1987 to 21 August 19871989: 8 April 1989 to 16 August 19891990: 21 May 1990 to 29 August 19901991: 17 June 1991 to 18 July 19911992: 18 June 1992 to 10 September 19921993: 31 May 1993 to 24 August 19931994: 30 May 1994 to 29 September 19941995: 4 June 1995 to 12 September 19951996: 24 April 1996 to 16 August 19961997: 17 May 1997 to 26 September 19971998: 18 May 1998 to 27 September 19981999: 7 June 1999 to 26 July 19992000: 4 May 2000 to 3 October 20002001: 24 May 2001 to 3 September 20012002: 29 May 2002 to 6 September 20022003: 13 May 2003 to 30 September 20032004: 18 May 2004 to 17 September 20042005: 18 May 2005 to 27 September 20052006: 12 May 2006 to 25 July 20062007: 1 June 2007 to 14 September 20072008: 19 May 2008 to 22 August 20082009: 6 May 2009 to 21 August 20092010: 27 May 2010 to 29 September 20102011: 7 May 2011 to 24 September 20112012: 8 May 2012 to 3 October 20122013: 15 May 2013 to 1 September 201319501955196019921997200220072012JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Winston meeting 30 C (86 F).
First to last qualifying date each year at Winston
YearFirst dateLast date
19501950-04-241950-09-16
19511951-05-051951-09-25
19521952-05-071952-09-20
19531953-05-211953-09-28
19541954-04-101954-09-21
19551955-06-061955-09-22
19561956-05-041956-09-28
19571957-06-051957-09-09
19581958-05-231958-09-03
19591959-05-121959-10-25
19601960-04-151960-09-26
19871987-06-021987-08-21
19891989-04-081989-08-16
19901990-05-211990-08-29
19911991-06-171991-07-18
19921992-06-181992-09-10
19931993-05-311993-08-24
19941994-05-301994-09-29
19951995-06-041995-09-12
19961996-04-241996-08-16
19971997-05-171997-09-26
19981998-05-181998-09-27
19991999-06-071999-07-26
20002000-05-042000-10-03
20012001-05-242001-09-03
20022002-05-292002-09-06
20032003-05-132003-09-30
20042004-05-182004-09-17
20052005-05-182005-09-27
20062006-05-122006-07-25
20072007-06-012007-09-14
20082008-05-192008-08-22
20092009-05-062009-08-21
20102010-05-272010-09-29
20112011-05-072011-09-24
20122012-05-082012-10-03
20132013-05-152013-09-01

Every Fixed Threshold

Fixed thresholds at Winston
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3792201161
35 C (95 F): Days331819519
90 F (32.2 C): Days3756201128
100 F (37.8 C): Days9320113
0 C (32 F): Ice days (max20519514
0 C (32 F): Frost days (min371791956174
-10 C (14 F): Days with min3748195641
-20 C (-4 F): Days with min6519872
-30 C (-22 F): Days with min1120111
20 C (68 F): Tropical nights (min7219501
10 mm (0.39 in): Days with 10 mm or more rain5520199614
25 mm (0.98 in): Days with 25 mm or more rain43620063
50 mm (1.97 in): Days with 50 mm or more rain4220082
100 mm (3.94 in): Days with 100 mm or more rain1120081
10 cm (3.9 in): Days with 10 cm or more snowfall26319581
25 cm (9.8 in): Days with 25 cm or more snowfall3120001

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Winston 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).