Malmstrom AFB, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Malmstrom AFB, a community in Cascade County, Montana.
Overnight
29°F
Partly Cloudy
Partly cloudy, with a low around 29. Southwest wind around 6 mph.
7-day forecast for Malmstrom AFB
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Partly Cloudy | 6 mph SW | 0% |
| Wednesday | 50°F | Mostly Sunny | 0 to 6 mph WSW | 0% |
| Wednesday Night | 32°F | Mostly Clear | 0 to 12 mph S | 0% |
| Thursday | 55°F | Mostly Sunny | 12 to 20 mph SW | 0% |
| Thursday Night | 37°F | Partly Cloudy | 16 mph SW | 0% |
| Friday | 56°F | Sunny | 15 to 25 mph SW | 1% |
| Friday Night | 42°F | Partly Cloudy | 17 to 24 mph SW | 1% |
| Saturday | 61°F | Mostly Sunny | 7 to 17 mph SW | 1% |
| Saturday Night | 43°F | Partly Cloudy | 7 to 15 mph SSW | 0% |
| Sunday | 63°F | Partly Sunny | 15 to 22 mph SW | 1% |
| Sunday Night | 40°F | Mostly Cloudy | 9 to 15 mph WSW | 1% |
| Monday | 55°F | Mostly Sunny | 1 to 9 mph SW | 1% |
| Monday Night | 40°F | Mostly Cloudy | 1 to 13 mph SSW | 0% |
| Tuesday | 59°F | Mostly Sunny | 13 to 21 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
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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 Nov 4, 2026.