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Data as of 2026-10-15
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Built 2026-10-17 (17 October 2026)

Benchmark Montana Threshold Days by Year

9 fixed thresholds counted per year at Benchmark Montana (USR0000MBEN): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Benchmark Montana Thresholds

  • Benchmark Montana: days with a maximum temperature at or below 0 C (32 F) in 31 years, most in 1996 with 82.
  • Benchmark Montana: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 1999 with 267.
  • Benchmark Montana: nights with a minimum temperature at or below -10 C (14 F) in 31 years, most in 2019 with 96.
  • Benchmark Montana: nights with a minimum temperature at or below -20 C (-4 F) in 31 years, most in 1996 with 46.
  • 9 fixed thresholds have at least one qualifying day at Benchmark Montana.
27 years with a qualifying day
Days at or above 30 C (86 F) per year at Benchmark Montana Days per year at Benchmark Montana with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 2007. 01020301990: 111992: 11995: 11996: 91999: 32000: 172001: 112004: 72005: 112006: 122007: 272011: 122012: 162013: 122014: 72015: 132016: 42017: 212018: 92019: 52020: 82021: 212022: 212023: 132024: 232025: 82026: 17199019962001200620122015201820212024
Days per year at Benchmark Montana with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 2007.
Days at or above 30 C (86 F) per year at Benchmark Montana
YearDaysDecade average
1990115
199215
199515
199695
199935
20001714.2
20011114.2
2004714.2
20051114.2
20061214.2
20072714.2
20111211
20121611
20131211
2014711
20151311
2016411
20172111
2018911
2019511
2020815.9
20212115.9
20222115.9
20231315.9
20242315.9
2025815.9
20261715.9
First to last qualifying date each year at Benchmark Montana For each year, a bar from the first to the last day at Benchmark Montana meeting 30 C (86 F). 1990: 30 June 1990 to 15 August 19901992: 14 August 1992 to 14 August 19921995: 3 September 1995 to 3 September 19951996: 3 July 1996 to 30 August 19961999: 27 July 1999 to 30 August 19992000: 12 July 2000 to 16 September 20002001: 4 July 2001 to 25 September 20012004: 14 July 2004 to 14 August 20042005: 21 June 2005 to 21 August 20052006: 8 July 2006 to 8 August 20062007: 28 June 2007 to 3 September 20072011: 28 June 2011 to 28 August 20112012: 7 July 2012 to 28 August 20122013: 2 July 2013 to 2 September 20132014: 13 July 2014 to 25 September 20142015: 26 June 2015 to 26 August 20152016: 2 August 2016 to 30 August 20162017: 26 June 2017 to 7 September 20172018: 6 July 2018 to 11 August 20182019: 22 July 2019 to 21 August 20192020: 28 July 2020 to 5 September 20202021: 14 June 2021 to 15 August 20212022: 12 July 2022 to 7 September 20222023: 21 July 2023 to 29 August 20232024: 8 July 2024 to 7 September 20242025: 30 June 2025 to 3 September 20252026: 11 July 2026 to 27 August 20261990199920052012201620202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Benchmark Montana meeting 30 C (86 F).
First to last qualifying date each year at Benchmark Montana
YearFirst dateLast date
19901990-06-301990-08-15
19921992-08-141992-08-14
19951995-09-031995-09-03
19961996-07-031996-08-30
19991999-07-271999-08-30
20002000-07-122000-09-16
20012001-07-042001-09-25
20042004-07-142004-08-14
20052005-06-212005-08-21
20062006-07-082006-08-08
20072007-06-282007-09-03
20112011-06-282011-08-28
20122012-07-072012-08-28
20132013-07-022013-09-02
20142014-07-132014-09-25
20152015-06-262015-08-26
20162016-08-022016-08-30
20172017-06-262017-09-07
20182018-07-062018-08-11
20192019-07-222019-08-21
20202020-07-282020-09-05
20212021-06-142021-08-15
20222022-07-122022-09-07
20232023-07-212023-08-29
20242024-07-082024-09-07
20252025-06-302025-09-03
20262026-07-112026-08-27

Every Fixed Threshold

Fixed thresholds at Benchmark Montana
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2727200717
35 C (95 F): Days4420071
90 F (32.2 C): Days191020073
0 C (32 F): Ice days (max3182199620
0 C (32 F): Frost days (min312671999147
-10 C (14 F): Days with min3196201929
-20 C (-4 F): Days with min314619966
-30 C (-22 F): Days with min261519964
-40 C (-40 F): Days with min10320243

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 Benchmark Montana 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).