Malmstrom AFB, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Malmstrom AFB, a community in Cascade County, Montana.
Tonight
46°F
Mostly Cloudy
Mostly cloudy, with a low around 46. South southeast wind 3 to 7 mph.
7-day forecast for Malmstrom AFB
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Cloudy | 3 to 7 mph SSE | 8% |
| Sunday | 74°F | Sunny | 0 to 3 mph S | 2% |
| Sunday Night | 47°F | Mostly Clear | 6 mph SE | 0% |
| Monday | 80°F | Sunny | 1 to 5 mph SSW | 0% |
| Monday Night | 51°F | Mostly Clear | 3 to 8 mph S | 0% |
| Tuesday | 82°F | Sunny | 7 mph SW | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 1 to 6 mph SSW | 1% |
| Wednesday | 81°F | Mostly Sunny | 7 mph WSW | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 8 mph SW | 6% |
| Thursday | 80°F | Sunny | 5 to 8 mph W | 4% |
| Thursday Night | 52°F | Partly Cloudy | 6 to 9 mph ESE | 6% |
| Friday | 78°F | Mostly Sunny | 5 to 10 mph SW | 7% |
| Friday Night | 49°F | Mostly Cloudy | 10 mph SW | 14% |
| Saturday | 67°F | Slight Chance Light Rain | 6 to 9 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov) for Malmstrom AFB (47.506, -111.183). Updated through the day.
Growing snapshot for Malmstrom AFB
Last spring frost
May 6
First fall frost
Oct 1
Growing season
147 days
Hardiness zone
4b
More local growing data for Malmstrom AFB: nearby ZIP 59414 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Gibson Flats
Great Falls
Hardy
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Neihart
Pleasant Valley Colony
Riceville
Sand Coulee
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Sun Prairie
Sun River
Tracy
Ulm
Vaughn
Climate data from the nearest NOAA station, Great Falls 16St, Mt (2.9 mi from Malmstrom AFB). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.