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

Windsor Threshold Days by Year (USC00059147)

15 fixed thresholds counted per year at Windsor (USC00059147): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Windsor Thresholds

  • Windsor: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1942 with 14.
  • Windsor: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1961 with 7.
  • Windsor: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 1988 with 6.
  • Windsor: days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 1977 with 2.
  • 15 fixed thresholds have at least one qualifying day at Windsor.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Windsor Days per year at Windsor with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 69 in 1943. 0204060801942: 581943: 691944: 681945: 611946: 681947: 46194219431944194519461947
Days per year at Windsor with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 69 in 1943.
Days at or above 30 C (86 F) per year at Windsor
YearDaysDecade average
19425861.7
19436961.7
19446861.7
19456161.7
19466861.7
19474661.7
First to last qualifying date each year at Windsor For each year, a bar from the first to the last day at Windsor meeting 30 C (86 F). 1942: 26 May 1942 to 7 October 19421943: 29 May 1943 to 14 September 19431944: 15 May 1944 to 22 September 19441945: 26 May 1945 to 22 September 19451946: 4 June 1946 to 1 October 19461947: 3 May 1947 to 5 October 1947194219431944194519461947JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Windsor meeting 30 C (86 F).
First to last qualifying date each year at Windsor
YearFirst dateLast date
19421942-05-261942-10-07
19431943-05-291943-09-14
19441944-05-151944-09-22
19451945-05-261945-09-22
19461946-06-041946-10-01
19471947-05-031947-10-05

Every Fixed Threshold

Fixed thresholds at Windsor
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days669194346
35 C (95 F): Days627194613
90 F (32.2 C): Days659194336
100 F (37.8 C): Days5619463
0 C (32 F): Ice days (max629194226
0 C (32 F): Frost days (min61781944174
-10 C (14 F): Days with min667194449
-20 C (-4 F): Days with min51619423
-30 C (-22 F): Days with min1419424
20 C (68 F): Tropical nights (min2119431
10 mm (0.39 in): Days with 10 mm or more rain431419424
25 mm (0.98 in): Days with 25 mm or more rain31719612
50 mm (1.97 in): Days with 50 mm or more rain11219771
10 cm (3.9 in): Days with 10 cm or more snowfall18619882
25 cm (9.8 in): Days with 25 cm or more snowfall4219451

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

  • Data for Windsor 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).