Harman US

Fort Shaw, MT Weather & Growing Conditions

This Afternoon
67°F
Mostly Cloudy
Mostly cloudy, with a high near 67. East southeast wind around 8 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 67°F Mostly Cloudy 8 mph ESE 9%
Tonight 46°F Mostly Cloudy 2 to 8 mph S 4%
Sunday 74°F Sunny 2 to 7 mph SSE 1%
Sunday Night 46°F Mostly Clear 3 to 7 mph S 0%
Monday 79°F Sunny 2 to 8 mph SW 0%
Monday Night 49°F Mostly Clear 6 mph SSW 0%
Tuesday 80°F Sunny 7 mph SW 0%
Tuesday Night 51°F Partly Cloudy 6 mph WSW 3%
Wednesday 80°F Mostly Sunny 5 to 9 mph SW 3%
Wednesday Night 51°F Partly Cloudy 5 to 10 mph WSW 6%
Thursday 78°F Mostly Sunny 3 to 9 mph SSW 3%
Thursday Night 51°F Partly Cloudy 5 to 10 mph N 7%
Friday 76°F Mostly Sunny 3 to 13 mph SW 9%
Friday Night 49°F Mostly Cloudy 7 to 12 mph WSW 13%

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 Sep 20, 2026.