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

Whitman Threshold Days by Year (USC00259265)

12 fixed thresholds counted per year at Whitman (USC00259265): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Whitman Thresholds

  • Whitman: days with 10 mm (0.39 in) or more of precipitation in 8 years, most in 1949 with 17.
  • Whitman: days with 25 mm (0.98 in) or more of precipitation in 7 years, most in 1949 with 7.
  • Whitman: nights with a minimum temperature at or below 0 C (32 F) in 2 years, most in 1917 with 194.
  • Whitman: nights with a minimum temperature at or below -10 C (14 F) in 2 years, most in 1917 with 77.
  • 12 fixed thresholds have at least one qualifying day at Whitman.
8 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Whitman Days per year at Whitman with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1949. 051015201893: 91894: 131897: 111899: 81901: 121917: 131949: 171950: 1518931894189718991901191719491950
Days per year at Whitman with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1949.
Days with 10 mm (0.39 in) or more of precipitation per year at Whitman
YearDaysDecade average
1893910.3
18941310.3
18971110.3
1899810.3
19011212
19171313
19491717
19501515
First to last qualifying date each year at Whitman For each year, a bar from the first to the last day at Whitman meeting 10 mm (0.39 in). 1893: 8 March 1893 to 24 December 18931894: 5 January 1894 to 3 July 18941897: 30 March 1897 to 3 December 18971899: 30 April 1899 to 18 August 18991901: 7 February 1901 to 12 December 19011917: 6 March 1917 to 18 September 19171949: 3 January 1949 to 10 December 19491950: 12 February 1950 to 20 September 195018931894189718991901191719491950JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Whitman meeting 10 mm (0.39 in).
First to last qualifying date each year at Whitman
YearFirst dateLast date
18931893-03-081893-12-24
18941894-01-051894-07-03
18971897-03-301897-12-03
18991899-04-301899-08-18
19011901-02-071901-12-12
19171917-03-061917-09-18
19491949-01-031949-12-10
19501950-02-121950-09-20

Every Fixed Threshold

Fixed thresholds at Whitman
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days136191736
35 C (95 F): Days1619176
90 F (32.2 C): Days119191719
0 C (32 F): Ice days (max138191738
0 C (32 F): Frost days (min21941917194
-10 C (14 F): Days with min277191777
-20 C (-4 F): Days with min223191723
-30 C (-22 F): Days with min2519175
20 C (68 F): Tropical nights (min1119171
10 mm (0.39 in): Days with 10 mm or more rain817194915
25 mm (0.98 in): Days with 25 mm or more rain7719494
50 mm (1.97 in): Days with 50 mm or more rain2119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Whitman 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).