Malmstrom AFB climate by month
Averages and records for each calendar month at Malmstrom AFB, United States, from 1949 to 2026. The warmest month is July, averaging 29.0°C; the coolest is January at −0.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.3°C | −11.2°C | 20.0°C23 January 2005 | −37.8°C3 January 1950 | 33 / 35 |
| February | 2.9°C | −8.3°C | 21.7°C5 February 2026 | −36.6°C6 February 2014 | 34 / 35 |
| March | 6.2°C | −5.4°C | 24.4°C22 March 1963 | −35.0°C8 March 1951 | 35 / 36 |
| April | 12.4°C | −0.1°C | 30.0°C19 April 1962 | −21.0°C21 April 2008 | 35 / 36 |
| May | 18.5°C | 5.5°C | 33.9°C18 May 2006 | −10.0°C2 May 1954 | 35 / 36 |
| June | 22.5°C | 9.4°C | 38.3°C30 June 2008 | −1.7°C13 June 1969 | 33 / 35 |
| July | 29.0°C | 13.0°C | 42.8°C19 July 2007 | 1.7°C31 July 1968 | 33 / 33 |
| August | 28.0°C | 12.1°C | 41.1°C5 August 1961 | 3.3°C31 August 1965 | 33 / 34 |
| September | 22.2°C | 7.8°C | 37.2°C3 September 2009 | −6.7°C14 September 1970 | 33 / 34 |
| October | 15.1°C | 2.6°C | 32.2°C3 October 2011 | −19.3°C28 October 2023 | 34 / 34 |
| November | 7.6°C | −3.6°C | 25.0°C5 November 2009 | −30.5°C24 November 2010 | 34 / 36 |
| December | 2.8°C | −8.0°C | 19.4°C6 December 2023 | −42.2°C29 December 1968 | 34 / 35 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 33 to 35 years each.
See what Malmstrom AFB is doing right now
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.