Fort Shaw, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Shaw, a community in Cascade County, Montana.
Today
54°F
Mostly Sunny
Mostly sunny. High near 54, with temperatures falling to around 48 in the afternoon. South wind 7 to 16 mph, with gusts as high as 25 mph.
7-day forecast for Fort Shaw
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Mostly Sunny | 7 to 16 mph S | 0% |
| Tonight | 30°F | Mostly Cloudy | 5 mph WSW | 0% |
| Wednesday | 50°F | Mostly Sunny | 3 mph W | 0% |
| Wednesday Night | 31°F | Mostly Clear | 1 to 10 mph SSW | 0% |
| Thursday | 55°F | Mostly Sunny | 10 to 17 mph SW | 0% |
| Thursday Night | 35°F | Mostly Clear | 13 to 16 mph SW | 0% |
| Friday | 54°F | Mostly Sunny | 16 to 25 mph SW | 1% |
| Friday Night | 38°F | Partly Cloudy | 18 to 26 mph SW | 1% |
| Saturday | 56°F | Mostly Sunny | 8 to 20 mph SW | 0% |
| Saturday Night | 39°F | Partly Cloudy | 8 to 18 mph SSW | 0% |
| Sunday | 62°F | Mostly Sunny | 13 to 21 mph SW | 0% |
| Sunday Night | 39°F | Mostly Cloudy | 8 to 13 mph SW | 1% |
| Monday | 56°F | Partly Sunny | 8 mph SW | 1% |
| Monday Night | 39°F | Mostly Cloudy | 6 to 12 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fort Shaw (47.497, -111.819). Updated through the day.
Growing snapshot for Fort Shaw
Last spring frost
Jun 2
First fall frost
Sep 10
Growing season
96 days
Hardiness zone
4b
More local growing data for Fort Shaw: nearby ZIP 59443 weather · frost dates · planting calendar · Montana frost dates
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Sun Prairie
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Climate data from the nearest NOAA station, Sun Rvr 4 S, Mt (7.4 mi from Fort Shaw). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.