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Built 2026-10-19 (19 October 2026)

Mtn Home AFB Threshold Days by Year (USW00024106)

15 fixed thresholds counted per year at Mtn Home AFB (USW00024106): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mtn Home AFB Thresholds

  • Mtn Home AFB: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 2022 with 165.
  • Mtn Home AFB: nights with a minimum temperature at or above 20 C (68 F) in 33 years, most in 1961 with 16.
  • Mtn Home AFB: nights with a minimum temperature at or below -10 C (14 F) in 32 years, most in 2013 with 31.
  • Mtn Home AFB: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 2025 with 98.
  • 15 fixed thresholds have at least one qualifying day at Mtn Home AFB.
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Mtn Home AFB Days per year at Mtn Home AFB with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 98 in 2025. 02550751001952: 731953: 691954: 711955: 751956: 821957: 791958: 871959: 701960: 841961: 811962: 631963: 691964: 551965: 491966: 861967: 821968: 571970: 732012: 872013: 852014: 722015: 882016: 782017: 932020: 852021: 822022: 832023: 772024: 882025: 982026: 9219521956196019641968201420202024
Days per year at Mtn Home AFB with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 98 in 2025.
Days at or above 30 C (86 F) per year at Mtn Home AFB
YearDaysDecade average
19527375.8
19536975.8
19547175.8
19557575.8
19568275.8
19577975.8
19588775.8
19597075.8
19608469.6
19618169.6
19626369.6
19636969.6
19645569.6
19654969.6
19668669.6
19678269.6
19685769.6
19707373
20128783.8
20138583.8
20147283.8
20158883.8
20167883.8
20179383.8
20208586.4
20218286.4
20228386.4
20237786.4
20248886.4
20259886.4
20269286.4
First to last qualifying date each year at Mtn Home AFB For each year, a bar from the first to the last day at Mtn Home AFB meeting 30 C (86 F). 1952: 31 May 1952 to 26 September 19521953: 11 June 1953 to 9 October 19531954: 8 May 1954 to 27 September 19541955: 20 May 1955 to 3 October 19551956: 16 May 1956 to 26 September 19561957: 1 June 1957 to 30 September 19571958: 5 May 1958 to 14 October 19581959: 12 May 1959 to 12 September 19591960: 10 May 1960 to 27 September 19601961: 9 May 1961 to 15 September 19611962: 14 April 1962 to 26 September 19621963: 18 May 1963 to 3 October 19631964: 16 May 1964 to 7 October 19641965: 6 June 1965 to 8 October 19651966: 2 May 1966 to 24 September 19661967: 17 May 1967 to 29 September 19671968: 28 May 1968 to 18 September 19681970: 16 May 1970 to 18 September 19702012: 22 April 2012 to 18 September 20122013: 13 May 2013 to 20 September 20132014: 15 May 2014 to 24 September 20142015: 29 May 2015 to 10 October 20152016: 21 April 2016 to 29 September 20162017: 11 May 2017 to 13 September 20172020: 29 April 2020 to 4 October 20202021: 6 May 2021 to 26 September 20212022: 26 May 2022 to 28 September 20222023: 30 April 2023 to 25 September 20232024: 16 May 2024 to 8 October 20242025: 9 May 2025 to 10 October 20252026: 10 May 2026 to 8 October 202619521956196019641968201420202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mtn Home AFB meeting 30 C (86 F).
First to last qualifying date each year at Mtn Home AFB
YearFirst dateLast date
19521952-05-311952-09-26
19531953-06-111953-10-09
19541954-05-081954-09-27
19551955-05-201955-10-03
19561956-05-161956-09-26
19571957-06-011957-09-30
19581958-05-051958-10-14
19591959-05-121959-09-12
19601960-05-101960-09-27
19611961-05-091961-09-15
19621962-04-141962-09-26
19631963-05-181963-10-03
19641964-05-161964-10-07
19651965-06-061965-10-08
19661966-05-021966-09-24
19671967-05-171967-09-29
19681968-05-281968-09-18
19701970-05-161970-09-18
20122012-04-222012-09-18
20132013-05-132013-09-20
20142014-05-152014-09-24
20152015-05-292015-10-10
20162016-04-212016-09-29
20172017-05-112017-09-13
20202020-04-292020-10-04
20212021-05-062021-09-26
20222022-05-262022-09-28
20232023-04-302023-09-25
20242024-05-162024-10-08
20252025-05-092025-10-10
20262026-05-102026-10-08

Every Fixed Threshold

Fixed thresholds at Mtn Home AFB
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3198202592
35 C (95 F): Days3153202149
40 C (104 F): Days221320249
90 F (32.2 C): Days3181201770
100 F (37.8 C): Days3026202120
0 C (32 F): Ice days (max313920227
0 C (32 F): Frost days (min33165202271
-10 C (14 F): Days with min323120132
-20 C (-4 F): Days with min10620132
-30 C (-22 F): Days with min1119621
20 C (68 F): Tropical nights (min331619619
25 C (77 F): Days with min7219611
10 mm (0.39 in): Days with 10 mm or more rain311219701
25 mm (0.98 in): Days with 25 mm or more rain3219682
10 cm (3.9 in): Days with 10 cm or more snowfall4319521

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

  • Data for Mtn Home AFB 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).