Fort Shaw, MT Weather & Growing Conditions
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. West wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 3 mph W | 0% |
| Tuesday | 77°F | Sunny | 2 to 7 mph SSE | 0% |
| Tuesday Night | 49°F | Mostly Clear | 3 to 8 mph ESE | 1% |
| Wednesday | 86°F | Sunny | 6 mph WSW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 8 mph NW | 0% |
| Thursday | 93°F | Sunny | 6 to 9 mph W | 0% |
| Thursday Night | 56°F | Mostly Clear | 5 to 10 mph WNW | 0% |
| Friday | 97°F | Sunny | 3 to 20 mph W | 0% |
| Friday Night | 58°F | Mostly Clear | 8 to 20 mph W | 0% |
| Saturday | 94°F | Sunny | 5 to 12 mph WSW | 0% |
| Saturday Night | 58°F | Mostly Clear | 6 to 15 mph WNW | 0% |
| Sunday | 89°F | Sunny | 5 to 9 mph NW | 0% |
| Sunday Night | 57°F | Partly Cloudy | 8 to 13 mph N | 1% |
| Monday | 87°F | Sunny | 5 to 8 mph N | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Shaw, MT
Last spring frost
Jun 2
First fall frost
Sep 10
Growing season
96 days
Hardiness zone
4a
Explore more for Fort Shaw, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Sun Rvr 4 S, Mt (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.