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Built 2026-10-19 (19 October 2026)

Wortman's Threshold Days by Year (USC00509911)

10 fixed thresholds counted per year at Wortman's (USC00509911): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wortman's Thresholds

  • Wortman's: days with a maximum temperature at or below 0 C (32 F) in 4 years, most in 1975 with 128.
  • Wortman's: nights with a minimum temperature at or below 0 C (32 F) in 4 years, most in 1975 with 218.
  • Wortman's: nights with a minimum temperature at or below -10 C (14 F) in 4 years, most in 1975 with 103.
  • Wortman's: nights with a minimum temperature at or below -20 C (-4 F) in 4 years, most in 1975 with 26.
  • 10 fixed thresholds have at least one qualifying day at Wortman's.
4 years with a qualifying day
Nights at or below 0 C (32 F) per year at Wortman's Days per year at Wortman's with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 218 in 1975. 01002003001975: 2181976: 2151977: 2131978: 2071975197619771978
Days per year at Wortman's with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 218 in 1975.
Nights at or below 0 C (32 F) per year at Wortman's
YearDaysDecade average
1975218213.3
1976215213.3
1977213213.3
1978207213.3
First to last qualifying date each year at Wortman's For each year, a bar from the first to the last day at Wortman's meeting 0 C (32 F). 1975: 1 January 1975 to 31 December 19751976: 1 January 1976 to 31 December 19761977: 1 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781975197619771978JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Wortman's meeting 0 C (32 F).
First to last qualifying date each year at Wortman's
YearFirst dateLast date
19751975-01-011975-12-31
19761976-01-011976-12-31
19771977-01-011977-12-31
19781978-01-011978-12-31

Every Fixed Threshold

Fixed thresholds at Wortman's
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max4128197585
0 C (32 F): Frost days (min42181975207
-10 C (14 F): Days with min4103197570
-20 C (-4 F): Days with min42619759
-30 C (-22 F): Days with min1219752
10 mm (0.39 in): Days with 10 mm or more rain232197731
25 mm (0.98 in): Days with 25 mm or more rain2719776
10 cm (3.9 in): Days with 10 cm or more snowfall428197614
25 cm (9.8 in): Days with 25 cm or more snowfall4619786
50 cm (19.7 in): Days with 50 cm or more snowfall2119771

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for Wortman's 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).