Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Winthrop Threshold Days by Year (USC00219093)

12 fixed thresholds counted per year at Winthrop (USC00219093): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Winthrop Thresholds

  • Winthrop: days with 10 mm (0.39 in) or more of precipitation in 4 years, most in 1919 with 27.
  • Winthrop: days with 25 mm (0.98 in) or more of precipitation in 4 years, most in 1918 with 4.
  • Winthrop: days with a maximum temperature at or above 30 C (86 F) in 2 years, most in 1919 with 39.
  • Winthrop: days with a maximum temperature at or above 90 F (32.2 C) in 2 years, most in 1918 with 9.
  • 12 fixed thresholds have at least one qualifying day at Winthrop.
4 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Winthrop Days per year at Winthrop with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1919. 01020301918: 251919: 271949: 191950: 141918191919491950
Days per year at Winthrop with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1919.
Days with 10 mm (0.39 in) or more of precipitation per year at Winthrop
YearDaysDecade average
19182526
19192726
19491919
19501414
First to last qualifying date each year at Winthrop For each year, a bar from the first to the last day at Winthrop meeting 10 mm (0.39 in). 1918: 28 April 1918 to 22 December 19181919: 2 February 1919 to 10 November 19191949: 4 January 1949 to 21 October 19491950: 26 March 1950 to 26 December 19501918191919491950JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Winthrop meeting 10 mm (0.39 in).
First to last qualifying date each year at Winthrop
YearFirst dateLast date
19181918-04-281918-12-22
19191919-02-021919-11-10
19491949-01-041949-10-21
19501950-03-261950-12-26

Every Fixed Threshold

Fixed thresholds at Winthrop
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days239191939
35 C (95 F): Days1119191
90 F (32.2 C): Days2919188
0 C (32 F): Ice days (max274191974
0 C (32 F): Frost days (min21701918163
-10 C (14 F): Days with min270191970
-20 C (-4 F): Days with min232191932
-30 C (-22 F): Days with min2519181
20 C (68 F): Tropical nights (min214191914
25 C (77 F): Days with min1119181
10 mm (0.39 in): Days with 10 mm or more rain427191914
25 mm (0.98 in): Days with 25 mm or more rain4419181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

  • Data for Winthrop 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).