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

Atka Threshold Days by Year (USC00500433)

10 fixed thresholds counted per year at Atka (USC00500433): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Atka Thresholds

  • Atka: days with 10 mm (0.39 in) or more of precipitation in 8 years, most in 1941 with 53.
  • Atka: days with 25 mm (0.98 in) or more of precipitation in 8 years, most in 1941 with 18.
  • Atka: days with 50 mm (1.97 in) or more of precipitation in 7 years, most in 1941 with 5.
  • Atka: days with a maximum temperature at or below 0 C (32 F) in 6 years, most in 1938 with 19.
  • 10 fixed thresholds have at least one qualifying day at Atka.
6 years with a qualifying day
Nights at or below 0 C (32 F) per year at Atka Days per year at Atka with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 139 in 1924. 0501001501924: 1391938: 1221940: 1011941: 1031948: 1062025: 61192419381940194119482025
Days per year at Atka with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 139 in 1924.
Nights at or below 0 C (32 F) per year at Atka
YearDaysDecade average
1924139139
1938122122
1940101103.3
1941103103.3
1948106103.3
20256161
First to last qualifying date each year at Atka For each year, a bar from the first to the last day at Atka meeting 0 C (32 F). 1924: 1 January 1924 to 31 December 19241938: 1 January 1938 to 31 December 19381940: 1 January 1940 to 31 December 19401941: 1 January 1941 to 31 December 19411948: 1 January 1948 to 31 December 19482025: 1 January 2025 to 29 December 2025192419381940194119482025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Atka meeting 0 C (32 F).
First to last qualifying date each year at Atka
YearFirst dateLast date
19241924-01-011924-12-31
19381938-01-011938-12-31
19401940-01-011940-12-31
19411941-01-011941-12-31
19481948-01-011948-12-31
20252025-01-012025-12-29

Every Fixed Threshold

Fixed thresholds at Atka
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max61919381
0 C (32 F): Frost days (min6139192461
-10 C (14 F): Days with min1119411
10 mm (0.39 in): Days with 10 mm or more rain853194125
25 mm (0.98 in): Days with 25 mm or more rain818194113
50 mm (1.97 in): Days with 50 mm or more rain7519419
100 mm (3.94 in): Days with 100 mm or more rain10n/a6
200 mm (7.87 in): Days with 200 mm or more rain10n/a3
10 cm (3.9 in): Days with 10 cm or more snowfall1519415
25 cm (9.8 in): Days with 25 cm or more snowfall1119411

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

  • Data for Atka 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).