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Built 2026-10-19 (19 October 2026)

Copper Basin Idaho Threshold Days by Year

8 fixed thresholds counted per year at Copper Basin Idaho (USR0000ICOP): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Copper Basin Idaho Thresholds

  • Copper Basin Idaho: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 2022 with 107.
  • Copper Basin Idaho: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 2008 with 338.
  • Copper Basin Idaho: nights with a minimum temperature at or below -10 C (14 F) in 37 years, most in 2002 with 168.
  • Copper Basin Idaho: nights with a minimum temperature at or below -20 C (-4 F) in 37 years, most in 2022 with 78.
  • 8 fixed thresholds have at least one qualifying day at Copper Basin Idaho.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Copper Basin Idaho Days per year at Copper Basin Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 13 in 2003. 0510151990: 21998: 32000: 62001: 42002: 52003: 132005: 12006: 62007: 92009: 12012: 42013: 12014: 12015: 22018: 22020: 42021: 12022: 12023: 12024: 52026: 61990200120052009201420202023
Days per year at Copper Basin Idaho with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 13 in 2003.
Days at or above 30 C (86 F) per year at Copper Basin Idaho
YearDaysDecade average
199022.5
199832.5
200065.6
200145.6
200255.6
2003135.6
200515.6
200665.6
200795.6
200915.6
201242
201312
201412
201522
201822
202043
202113
202213
202313
202453
202663
First to last qualifying date each year at Copper Basin Idaho For each year, a bar from the first to the last day at Copper Basin Idaho meeting 30 C (86 F). 1990: 6 August 1990 to 7 August 19901998: 17 July 1998 to 21 July 19982000: 29 July 2000 to 8 August 20002001: 3 July 2001 to 8 August 20012002: 10 July 2002 to 14 July 20022003: 10 July 2003 to 15 August 20032005: 21 July 2005 to 21 July 20052006: 15 July 2006 to 27 July 20062007: 4 July 2007 to 1 August 20072009: 21 August 2009 to 21 August 20092012: 9 July 2012 to 14 August 20122013: 2 July 2013 to 2 July 20132014: 14 July 2014 to 14 July 20142015: 29 June 2015 to 2 July 20152018: 10 August 2018 to 11 August 20182020: 31 July 2020 to 5 September 20202021: 11 July 2021 to 11 July 20212022: 7 September 2022 to 7 September 20222023: 16 August 2023 to 16 August 20232024: 10 July 2024 to 2 August 20242026: 12 July 2026 to 21 August 20261990200120052009201420202023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Copper Basin Idaho meeting 30 C (86 F).
First to last qualifying date each year at Copper Basin Idaho
YearFirst dateLast date
19901990-08-061990-08-07
19981998-07-171998-07-21
20002000-07-292000-08-08
20012001-07-032001-08-08
20022002-07-102002-07-14
20032003-07-102003-08-15
20052005-07-212005-07-21
20062006-07-152006-07-27
20072007-07-042007-08-01
20092009-08-212009-08-21
20122012-07-092012-08-14
20132013-07-022013-07-02
20142014-07-142014-07-14
20152015-06-292015-07-02
20182018-08-102018-08-11
20202020-07-312020-09-05
20212021-07-112021-07-11
20222022-09-072022-09-07
20232023-08-162023-08-16
20242024-07-102024-08-02
20262026-07-122026-08-21

Every Fixed Threshold

Fixed thresholds at Copper Basin Idaho
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days211320036
90 F (32.2 C): Days4320021
0 C (32 F): Ice days (max37107202232
0 C (32 F): Frost days (min373382008206
-10 C (14 F): Days with min37168200267
-20 C (-4 F): Days with min3778202216
-30 C (-22 F): Days with min371919871
-40 C (-40 F): Days with min2219902

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Copper Basin 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).