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Built 2026-10-18 (18 October 2026)

Shirley Basin Threshold Days by Year

14 fixed thresholds counted per year at Shirley Basin (USC00488192): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Shirley Basin Thresholds

  • Shirley Basin: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1993 with 14.
  • Shirley Basin: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 2008 with 272.
  • Shirley Basin: nights with a minimum temperature at or below -10 C (14 F) in 37 years, most in 2008 with 147.
  • Shirley Basin: nights with a minimum temperature at or below -20 C (-4 F) in 37 years, most in 2001 with 61.
  • 14 fixed thresholds have at least one qualifying day at Shirley Basin.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Shirley Basin Days per year at Shirley Basin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 26 in 1988. 01020301980: 141981: 101982: 111983: 101986: 71987: 121988: 261989: 151990: 151991: 41992: 11993: 21995: 11996: 41997: 21998: 51999: 12001: 102003: 182004: 22005: 142006: 112007: 152008: 52010: 22011: 22012: 152013: 172014: 62015: 12016: 132017: 122024: 122025: 92026: 21198019861990199519992005201020142024
Days per year at Shirley Basin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 26 in 1988.
Days at or above 30 C (86 F) per year at Shirley Basin
YearDaysDecade average
19801413.1
19811013.1
19821113.1
19831013.1
1986713.1
19871213.1
19882613.1
19891513.1
1990153.9
199143.9
199213.9
199323.9
199513.9
199643.9
199723.9
199853.9
199913.9
20011010.7
20031810.7
2004210.7
20051410.7
20061110.7
20071510.7
2008510.7
201028.5
201128.5
2012158.5
2013178.5
201468.5
201518.5
2016138.5
2017128.5
20241214
2025914
20262114
First to last qualifying date each year at Shirley Basin For each year, a bar from the first to the last day at Shirley Basin meeting 30 C (86 F). 1980: 24 June 1980 to 12 August 19801981: 26 June 1981 to 4 August 19811982: 29 June 1982 to 18 August 19821983: 6 July 1983 to 12 August 19831986: 28 June 1986 to 20 August 19861987: 15 July 1987 to 3 August 19871988: 4 June 1988 to 15 August 19881989: 19 June 1989 to 2 August 19891990: 23 June 1990 to 10 August 19901991: 15 July 1991 to 23 July 19911992: 4 September 1992 to 4 September 19921993: 29 July 1993 to 30 July 19931995: 29 July 1995 to 29 July 19951996: 2 July 1996 to 13 August 19961997: 16 July 1997 to 17 July 19971998: 17 July 1998 to 4 September 19981999: 7 July 1999 to 7 July 19992001: 2 July 2001 to 7 August 20012003: 12 July 2003 to 14 August 20032004: 13 July 2004 to 18 July 20042005: 21 June 2005 to 29 July 20052006: 29 June 2006 to 30 July 20062007: 24 June 2007 to 13 August 20072008: 22 July 2008 to 5 August 20082010: 27 July 2010 to 23 August 20102011: 26 July 2011 to 26 August 20112012: 24 June 2012 to 11 August 20122013: 11 June 2013 to 7 September 20132014: 6 July 2014 to 4 August 20142015: 27 July 2015 to 27 July 20152016: 22 June 2016 to 5 August 20162017: 4 July 2017 to 4 September 20172024: 11 July 2024 to 21 August 20242025: 2 July 2025 to 20 August 20252026: 7 July 2026 to 21 August 20261980198719921998200520112016JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Shirley Basin meeting 30 C (86 F).
First to last qualifying date each year at Shirley Basin
YearFirst dateLast date
19801980-06-241980-08-12
19811981-06-261981-08-04
19821982-06-291982-08-18
19831983-07-061983-08-12
19861986-06-281986-08-20
19871987-07-151987-08-03
19881988-06-041988-08-15
19891989-06-191989-08-02
19901990-06-231990-08-10
19911991-07-151991-07-23
19921992-09-041992-09-04
19931993-07-291993-07-30
19951995-07-291995-07-29
19961996-07-021996-08-13
19971997-07-161997-07-17
19981998-07-171998-09-04
19991999-07-071999-07-07
20012001-07-022001-08-07
20032003-07-122003-08-14
20042004-07-132004-07-18
20052005-06-212005-07-29
20062006-06-292006-07-30
20072007-06-242007-08-13
20082008-07-222008-08-05
20102010-07-272010-08-23
20112011-07-262011-08-26
20122012-06-242012-08-11
20132013-06-112013-09-07
20142014-07-062014-08-04
20152015-07-272015-07-27
20162016-06-222016-08-05
20172017-07-042017-09-04
20242024-07-112024-08-21
20252025-07-022025-08-20
20262026-07-072026-08-21

Every Fixed Threshold

Fixed thresholds at Shirley Basin
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3526198821
35 C (95 F): Days2219891
90 F (32.2 C): Days17819897
0 C (32 F): Ice days (max3599201020
0 C (32 F): Frost days (min372722008141
-10 C (14 F): Days with min37147200845
-20 C (-4 F): Days with min376120019
-30 C (-22 F): Days with min341220103
-40 C (-40 F): Days with min5220011
10 mm (0.39 in): Days with 10 mm or more rain3914199310
25 mm (0.98 in): Days with 25 mm or more rain13319931
50 mm (1.97 in): Days with 50 mm or more rain1120011
10 cm (3.9 in): Days with 10 cm or more snowfall37819932
25 cm (9.8 in): Days with 25 cm or more snowfall6119931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1980.

Download the Data

  • Data for Shirley Basin 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).