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Built 2026-10-19 (19 October 2026)

Sitka AP Threshold Days by Year (USW00025333)

10 fixed thresholds counted per year at Sitka AP (USW00025333): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sitka AP Thresholds

  • Sitka AP: days with a maximum temperature at or below 0 C (32 F) in 80 years, most in 1950 with 33.
  • Sitka AP: nights with a minimum temperature at or below 0 C (32 F) in 80 years, most in 1948 with 122.
  • Sitka AP: days with 10 mm (0.39 in) or more of precipitation in 78 years, most in 1987 with 107.
  • Sitka AP: days with 25 mm (0.98 in) or more of precipitation in 78 years, most in 1961 with 34.
  • 10 fixed thresholds have at least one qualifying day at Sitka AP.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Sitka AP Days per year at Sitka AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 2017. 011221975: 11976: 12017: 22020: 11975197620172020
Days per year at Sitka AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 2017.
Days at or above 30 C (86 F) per year at Sitka AP
YearDaysDecade average
197511
197611
201722
202011
First to last qualifying date each year at Sitka AP For each year, a bar from the first to the last day at Sitka AP meeting 30 C (86 F). 1975: 7 July 1975 to 7 July 19751976: 30 July 1976 to 30 July 19762017: 21 July 2017 to 22 July 20172020: 31 July 2020 to 31 July 20201975197620172020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sitka AP meeting 30 C (86 F).
First to last qualifying date each year at Sitka AP
YearFirst dateLast date
19751975-07-071975-07-07
19761976-07-301976-07-30
20172017-07-212017-07-22
20202020-07-312020-07-31

Every Fixed Threshold

Fixed thresholds at Sitka AP
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4220171
0 C (32 F): Ice days (max803319502
0 C (32 F): Frost days (min80122194848
-10 C (14 F): Days with min541419722
10 mm (0.39 in): Days with 10 mm or more rain78107198754
25 mm (0.98 in): Days with 25 mm or more rain7834196115
50 mm (1.97 in): Days with 50 mm or more rain731019482
100 mm (3.94 in): Days with 100 mm or more rain14219611
10 cm (3.9 in): Days with 10 cm or more snowfall46719612
25 cm (9.8 in): Days with 25 cm or more snowfall5119541

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 Sitka AP 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 (2026-10-17).