Built 2026-10-19 (19 October 2026)

Malmstrom AFB Threshold Days by Year (USW00024112)

16 fixed thresholds counted per year at Malmstrom AFB (USW00024112): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Malmstrom AFB Thresholds

  • Malmstrom AFB: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2007 with 67.
  • Malmstrom AFB: days with a maximum temperature at or above 90 F (32.2 C) in 33 years, most in 2007 with 52.
  • Malmstrom AFB: days with a maximum temperature at or below 0 C (32 F) in 33 years, most in 1969 with 75.
  • Malmstrom AFB: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1970 with 193.
  • 16 fixed thresholds have at least one qualifying day at Malmstrom AFB.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Malmstrom AFB Days per year at Malmstrom AFB with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 2007. 0204060801949: 341950: 181951: 191952: 251953: 371954: 251955: 291956: 301957: 291958: 331959: 321960: 351961: 421962: 341963: 381964: 301965: 101966: 361967: 361968: 181969: 351970: 332007: 672008: 522009: 592010: 242011: 482012: 432013: 522023: 352024: 462025: 372026: 42194919531957196119651969200920132026
Days per year at Malmstrom AFB with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 2007.
Days at or above 30 C (86 F) per year at Malmstrom AFB
YearDaysDecade average
19493434
19501827.7
19511927.7
19522527.7
19533727.7
19542527.7
19552927.7
19563027.7
19572927.7
19583327.7
19593227.7
19603531.4
19614231.4
19623431.4
19633831.4
19643031.4
19651031.4
19663631.4
19673631.4
19681831.4
19693531.4
19703333
20076759.3
20085259.3
20095959.3
20102441.8
20114841.8
20124341.8
20135241.8
20233540
20244640
20253740
20264240
First to last qualifying date each year at Malmstrom AFB For each year, a bar from the first to the last day at Malmstrom AFB meeting 30 C (86 F). 1949: 10 May 1949 to 23 September 19491950: 30 June 1950 to 4 September 19501951: 13 July 1951 to 7 September 19511952: 5 June 1952 to 26 September 19521953: 6 May 1953 to 15 September 19531954: 18 May 1954 to 2 September 19541955: 22 June 1955 to 6 September 19551956: 31 May 1956 to 19 September 19561957: 3 June 1957 to 27 September 19571958: 20 May 1958 to 11 September 19581959: 12 June 1959 to 13 September 19591960: 12 May 1960 to 4 September 19601961: 6 June 1961 to 29 August 19611962: 19 April 1962 to 2 October 19621963: 18 June 1963 to 2 October 19631964: 19 May 1964 to 13 October 19641965: 26 July 1965 to 12 August 19651966: 6 May 1966 to 23 September 19661967: 12 July 1967 to 29 September 19671968: 19 June 1968 to 11 September 19681969: 4 June 1969 to 11 September 19691970: 4 June 1970 to 31 August 19702007: 12 May 2007 to 15 September 20072008: 17 May 2008 to 2 October 20082009: 19 May 2009 to 29 September 20092010: 28 June 2010 to 28 September 20102011: 28 June 2011 to 3 October 20112012: 15 May 2012 to 18 September 20122013: 13 May 2013 to 16 September 20132023: 30 June 2023 to 17 September 20232024: 14 June 2024 to 4 October 20242025: 10 May 2025 to 25 September 20252026: 13 May 2026 to 25 September 20261949195419591964196920102024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Malmstrom AFB meeting 30 C (86 F).
First to last qualifying date each year at Malmstrom AFB
YearFirst dateLast date
19491949-05-101949-09-23
19501950-06-301950-09-04
19511951-07-131951-09-07
19521952-06-051952-09-26
19531953-05-061953-09-15
19541954-05-181954-09-02
19551955-06-221955-09-06
19561956-05-311956-09-19
19571957-06-031957-09-27
19581958-05-201958-09-11
19591959-06-121959-09-13
19601960-05-121960-09-04
19611961-06-061961-08-29
19621962-04-191962-10-02
19631963-06-181963-10-02
19641964-05-191964-10-13
19651965-07-261965-08-12
19661966-05-061966-09-23
19671967-07-121967-09-29
19681968-06-191968-09-11
19691969-06-041969-09-11
19701970-06-041970-08-31
20072007-05-122007-09-15
20082008-05-172008-10-02
20092009-05-192009-09-29
20102010-06-282010-09-28
20112011-06-282011-10-03
20122012-05-152012-09-18
20132013-05-132013-09-16
20232023-06-302023-09-17
20242024-06-142024-10-04
20252025-05-102025-09-25
20262026-05-132026-09-25

Every Fixed Threshold

Fixed thresholds at Malmstrom AFB
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3367200742
35 C (95 F): Days312820079
40 C (104 F): Days4620071
90 F (32.2 C): Days3352200727
100 F (37.8 C): Days151820072
0 C (32 F): Ice days (max3375196913
0 C (32 F): Frost days (min33193197086
-10 C (14 F): Days with min3380195515
-20 C (-4 F): Days with min333319497
-30 C (-22 F): Days with min241119504
-40 C (-40 F): Days with min1119681
20 C (68 F): Tropical nights (min14820072
10 mm (0.39 in): Days with 10 mm or more rain331619689
25 mm (0.98 in): Days with 25 mm or more rain25519532
50 mm (1.97 in): Days with 50 mm or more rain6219531
10 cm (3.9 in): Days with 10 cm or more snowfall17519551

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Malmstrom 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).