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Built 2026-10-17 (17 October 2026)

Salmon Idaho Threshold Days by Year

10 fixed thresholds counted per year at Salmon Idaho (USR0000ISAL): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Salmon Idaho Thresholds

  • Salmon Idaho: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 2022 with 78.
  • Salmon Idaho: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 2011 with 179.
  • Salmon Idaho: nights with a minimum temperature at or below -10 C (14 F) in 41 years, most in 1993 with 56.
  • Salmon Idaho: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 2013 with 55.
  • 10 fixed thresholds have at least one qualifying day at Salmon Idaho.
40 years with a qualifying day
Days at or above 30 C (86 F) per year at Salmon Idaho Days per year at Salmon Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 2013. 02040601986: 201987: 91988: 361989: 221990: 341991: 361992: 241994: 401995: 191996: 351997: 151998: 371999: 272000: 332001: 362002: 302003: 522004: 192005: 322006: 402007: 502008: 312009: 272010: 202011: 242012: 462013: 552014: 352015: 282016: 312017: 332018: 322019: 252020: 262021: 492022: 482023: 252024: 392025: 292026: 391986199019951999200320072011201520192023
Days per year at Salmon Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 2013.
Days at or above 30 C (86 F) per year at Salmon Idaho
YearDaysDecade average
19862021.8
1987921.8
19883621.8
19892221.8
19903429.7
19913629.7
19922429.7
19944029.7
19951929.7
19963529.7
19971529.7
19983729.7
19992729.7
20003335
20013635
20023035
20035235
20041935
20053235
20064035
20075035
20083135
20092735
20102032.9
20112432.9
20124632.9
20135532.9
20143532.9
20152832.9
20163132.9
20173332.9
20183232.9
20192532.9
20202636.4
20214936.4
20224836.4
20232536.4
20243936.4
20252936.4
20263936.4
First to last qualifying date each year at Salmon Idaho For each year, a bar from the first to the last day at Salmon Idaho meeting 30 C (86 F). 1986: 27 May 1986 to 28 August 19861987: 14 June 1987 to 4 August 19871988: 4 June 1988 to 6 September 19881989: 29 June 1989 to 7 August 19891990: 22 June 1990 to 15 September 19901991: 3 July 1991 to 6 September 19911992: 22 June 1992 to 21 August 19921994: 20 June 1994 to 8 September 19941995: 7 July 1995 to 3 September 19951996: 7 June 1996 to 10 September 19961997: 14 July 1997 to 9 September 19971998: 13 July 1998 to 15 September 19981999: 6 July 1999 to 27 August 19992000: 7 June 2000 to 16 September 20002001: 1 June 2001 to 4 September 20012002: 25 June 2002 to 15 September 20022003: 28 May 2003 to 4 September 20032004: 23 June 2004 to 31 August 20042005: 20 June 2005 to 3 September 20052006: 24 June 2006 to 3 September 20062007: 21 June 2007 to 3 September 20072008: 21 June 2008 to 30 August 20082009: 18 May 2009 to 19 September 20092010: 28 June 2010 to 26 August 20102011: 3 July 2011 to 10 September 20112012: 15 May 2012 to 31 August 20122013: 9 June 2013 to 11 September 20132014: 2 July 2014 to 25 September 20142015: 8 June 2015 to 29 August 20152016: 5 June 2016 to 30 August 20162017: 20 June 2017 to 4 September 20172018: 5 July 2018 to 16 August 20182019: 11 July 2019 to 15 September 20192020: 5 June 2020 to 6 September 20202021: 2 June 2021 to 9 September 20212022: 17 June 2022 to 7 September 20222023: 2 July 2023 to 18 August 20232024: 7 June 2024 to 25 September 20242025: 31 May 2025 to 3 September 20252026: 16 June 2026 to 27 August 202619861991199720022007201220172022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Salmon Idaho meeting 30 C (86 F).
First to last qualifying date each year at Salmon Idaho
YearFirst dateLast date
19861986-05-271986-08-28
19871987-06-141987-08-04
19881988-06-041988-09-06
19891989-06-291989-08-07
19901990-06-221990-09-15
19911991-07-031991-09-06
19921992-06-221992-08-21
19941994-06-201994-09-08
19951995-07-071995-09-03
19961996-06-071996-09-10
19971997-07-141997-09-09
19981998-07-131998-09-15
19991999-07-061999-08-27
20002000-06-072000-09-16
20012001-06-012001-09-04
20022002-06-252002-09-15
20032003-05-282003-09-04
20042004-06-232004-08-31
20052005-06-202005-09-03
20062006-06-242006-09-03
20072007-06-212007-09-03
20082008-06-212008-08-30
20092009-05-182009-09-19
20102010-06-282010-08-26
20112011-07-032011-09-10
20122012-05-152012-08-31
20132013-06-092013-09-11
20142014-07-022014-09-25
20152015-06-082015-08-29
20162016-06-052016-08-30
20172017-06-202017-09-04
20182018-07-052018-08-16
20192019-07-112019-09-15
20202020-06-052020-09-06
20212021-06-022021-09-09
20222022-06-172022-09-07
20232023-07-022023-08-18
20242024-06-072024-09-25
20252025-05-312025-09-03
20262026-06-162026-08-27

Every Fixed Threshold

Fixed thresholds at Salmon Idaho
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4055201339
35 C (95 F): Days271420035
90 F (32.2 C): Days4036200318
100 F (37.8 C): Days1220022
0 C (32 F): Ice days (max4178202220
0 C (32 F): Frost days (min41179201174
-10 C (14 F): Days with min415619938
-20 C (-4 F): Days with min281019903
-30 C (-22 F): Days with min2419892
20 C (68 F): Tropical nights (min301020242

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1986.

Download the Data

  • Data for Salmon Idaho 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-15).