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
52°F
Cloudy then Chance Light Rain
A chance of rain after midnight. Cloudy, with a low around 52. North northeast wind 2 to 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Malmstrom AFB
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Cloudy then Chance Light Rain | 2 to 6 mph NNE | 28% |
| Saturday | 66°F | Mostly Cloudy | 1 to 8 mph NE | 13% |
| Saturday Night | 48°F | Mostly Cloudy | 3 to 8 mph SSE | 4% |
| Sunday | 74°F | Mostly Sunny | 0 to 3 mph S | 2% |
| Sunday Night | 49°F | Mostly Clear | 7 mph SE | 0% |
| Monday | 80°F | Sunny | 5 mph SSW | 0% |
| Monday Night | 51°F | Mostly Clear | 0 to 8 mph SSW | 0% |
| Tuesday | 79°F | Sunny | 7 mph WSW | 1% |
| Tuesday Night | 51°F | Mostly Clear | 6 mph SSE | 1% |
| Wednesday | 80°F | Sunny | 8 mph SW | 2% |
| Wednesday Night | 52°F | Mostly Clear | 6 mph SSW | 2% |
| Thursday | 81°F | Sunny | 6 mph SW | 2% |
| Thursday Night | 53°F | Partly Cloudy | 8 mph SE | 2% |
| Friday | 80°F | Mostly Sunny | 6 to 9 mph SW | 1% |
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
Belt
Big Stone Colony
Black Eagle
Cascade
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Fair Haven Colony
Fairfield
Fort Shaw
Gibson Flats
Great Falls
Hardy
Monarch
Neihart
Pleasant Valley Colony
Riceville
Sand Coulee
Simms
Stockett
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 19, 2026.