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

Tyonek Threshold Days by Year (USC00509494)

9 fixed thresholds counted per year at Tyonek (USC00509494): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tyonek Thresholds

  • Tyonek: days with a maximum temperature at or below 0 C (32 F) in 6 years, most in 1907 with 109.
  • Tyonek: nights with a minimum temperature at or below 0 C (32 F) in 6 years, most in 1901 with 197.
  • Tyonek: nights with a minimum temperature at or below -10 C (14 F) in 6 years, most in 1907 with 106.
  • Tyonek: nights with a minimum temperature at or below -20 C (-4 F) in 5 years, most in 1907 with 37.
  • 9 fixed thresholds have at least one qualifying day at Tyonek.
6 years with a qualifying day
Nights at or below 0 C (32 F) per year at Tyonek Days per year at Tyonek with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 197 in 1901. 0501001502001899: 1941900: 1811901: 1971902: 1751903: 1921907: 187189919001901190219031907
Days per year at Tyonek with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 197 in 1901.
Nights at or below 0 C (32 F) per year at Tyonek
YearDaysDecade average
1899194194
1900181186.4
1901197186.4
1902175186.4
1903192186.4
1907187186.4
First to last qualifying date each year at Tyonek For each year, a bar from the first to the last day at Tyonek meeting 0 C (32 F). 1899: 1 January 1899 to 31 December 18991900: 1 January 1900 to 31 December 19001901: 1 January 1901 to 31 December 19011902: 1 January 1902 to 31 December 19021903: 1 January 1903 to 31 December 19031907: 1 January 1907 to 31 December 1907189919001901190219031907JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tyonek meeting 0 C (32 F).
First to last qualifying date each year at Tyonek
YearFirst dateLast date
18991899-01-011899-12-31
19001900-01-011900-12-31
19011901-01-011901-12-31
19021902-01-011902-12-31
19031903-01-011903-12-31
19071907-01-011907-12-31

Every Fixed Threshold

Fixed thresholds at Tyonek
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2118991
90 F (32.2 C): Days1119031
0 C (32 F): Ice days (max61091907109
0 C (32 F): Frost days (min61971901187
-10 C (14 F): Days with min61061907106
-20 C (-4 F): Days with min537190737
-30 C (-22 F): Days with min3419022
10 mm (0.39 in): Days with 10 mm or more rain21519036
25 mm (0.98 in): Days with 25 mm or more rain1219032

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

  • Data for Tyonek 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).