Harman US

Windham, MT Weather & Growing Conditions

Overnight
51°F
Light Rain Likely
Rain likely. Cloudy, with a low around 51. North wind around 2 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Overnight 51°F Light Rain Likely 2 mph N 74%
Saturday 55°F Light Rain Likely 1 to 8 mph NNE 63%
Saturday Night 47°F Chance Light Rain 2 to 7 mph SSW 43%
Sunday 64°F Patchy Fog then Partly Sunny 2 to 7 mph ESE 17%
Sunday Night 46°F Mostly Clear 9 mph SSE 0%
Monday 73°F Sunny 7 mph SSE 0%
Monday Night 50°F Mostly Clear 7 to 13 mph SSW 0%
Tuesday 74°F Mostly Sunny 8 mph W 2%
Tuesday Night 51°F Mostly Clear 5 to 9 mph WNW 1%
Wednesday 74°F Sunny 6 to 9 mph WSW 3%
Wednesday Night 51°F Mostly Clear 6 to 9 mph WSW 1%
Thursday 77°F Sunny 9 mph SSW 2%
Thursday Night 53°F Mostly Clear 10 to 14 mph SSW 2%
Friday 77°F Mostly Sunny 12 mph SSW 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Windham, MT

Last spring frost
May 25
First fall frost
Sep 21
Growing season
118 days
Hardiness zone
4b

Explore more for Windham, MT: full frost dates · planting calendar · Montana frost dates

Climate data from the nearest NOAA station, Stanford, Mt (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.