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Built 2026-10-19 (19 October 2026)

Mt. Ryan Threshold Days by Year (USS0046Q01S)

9 fixed thresholds counted per year at Mt. Ryan (USS0046Q01S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt. Ryan Thresholds

  • Mt. Ryan: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 2025 with 25.
  • Mt. Ryan: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 2025 with 4.
  • Mt. Ryan: nights with a minimum temperature at or below 0 C (32 F) in 26 years, most in 1992 with 251.
  • Mt. Ryan: nights with a minimum temperature at or below -10 C (14 F) in 26 years, most in 1992 with 164.
  • 9 fixed thresholds have at least one qualifying day at Mt. Ryan.
26 years with a qualifying day
Nights at or below 0 C (32 F) per year at Mt. Ryan Days per year at Mt. Ryan with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 251 in 1992. 01002003001986: 2391987: 2461988: 2351991: 2041992: 2511995: 1921996: 2421997: 2151998: 2262004: 2212007: 2112008: 2202009: 2182012: 2262013: 2382014: 2382015: 2312016: 2202017: 2152018: 2102021: 2302022: 2332023: 2372024: 2262025: 2352026: 156198619911996200420092014201720222025
Days per year at Mt. Ryan with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 251 in 1992.
Nights at or below 0 C (32 F) per year at Mt. Ryan
YearDaysDecade average
1986239240
1987246240
1988235240
1991204221.7
1992251221.7
1995192221.7
1996242221.7
1997215221.7
1998226221.7
2004221217.5
2007211217.5
2008220217.5
2009218217.5
2012226225.4
2013238225.4
2014238225.4
2015231225.4
2016220225.4
2017215225.4
2018210225.4
2021230219.5
2022233219.5
2023237219.5
2024226219.5
2025235219.5
2026156219.5
First to last qualifying date each year at Mt. Ryan For each year, a bar from the first to the last day at Mt. Ryan meeting 0 C (32 F). 1986: 2 January 1986 to 31 December 19861987: 1 January 1987 to 31 December 19871988: 2 January 1988 to 31 December 19881991: 6 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921995: 1 January 1995 to 31 December 19951996: 1 January 1996 to 31 December 19961997: 1 January 1997 to 31 December 19971998: 1 January 1998 to 31 December 19982004: 1 January 2004 to 31 December 20042007: 1 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092012: 1 January 2012 to 31 December 20122013: 1 January 2013 to 31 December 20132014: 1 January 2014 to 31 December 20142015: 1 January 2015 to 31 December 20152016: 1 January 2016 to 31 December 20162017: 1 January 2017 to 31 December 20172018: 1 January 2018 to 31 December 20182021: 1 January 2021 to 31 December 20212022: 1 January 2022 to 31 December 20222023: 1 January 2023 to 31 December 20232024: 1 January 2024 to 31 December 20242025: 1 January 2025 to 31 December 20252026: 1 January 2026 to 14 October 20261986199219982009201520212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mt. Ryan meeting 0 C (32 F).
First to last qualifying date each year at Mt. Ryan
YearFirst dateLast date
19861986-01-021986-12-31
19871987-01-011987-12-31
19881988-01-021988-12-31
19911991-01-061991-12-31
19921992-01-011992-12-31
19951995-01-011995-12-31
19961996-01-011996-12-31
19971997-01-011997-12-31
19981998-01-011998-12-31
20042004-01-012004-12-31
20072007-01-012007-12-31
20082008-01-012008-12-31
20092009-01-012009-12-31
20122012-01-012012-12-31
20132013-01-012013-12-31
20142014-01-012014-12-31
20152015-01-012015-12-31
20162016-01-012016-12-31
20172017-01-012017-12-31
20182018-01-012018-12-31
20212021-01-012021-12-31
20222022-01-012022-12-31
20232023-01-012023-12-31
20242024-01-012024-12-31
20252025-01-012025-12-31
20262026-01-012026-10-14

Every Fixed Threshold

Fixed thresholds at Mt. Ryan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1119921
0 C (32 F): Ice days (max242041992115
0 C (32 F): Frost days (min262511992156
-10 C (14 F): Days with min26164199295
-20 C (-4 F): Days with min2690202165
-30 C (-22 F): Days with min2421201221
10 mm (0.39 in): Days with 10 mm or more rain4125202518
25 mm (0.98 in): Days with 25 mm or more rain27420251
50 mm (1.97 in): Days with 50 mm or more rain4119861

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

  • Data for Mt. Ryan 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).