Windham, MT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Windham, a community in Judith Basin County, Montana.

Tonight

51°F

Chance Showers And Thunderstorms then Rain Likely

A chance of showers and thunderstorms before 9pm, then rain likely. Cloudy, with a low around 51. North northwest wind 2 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Windham

When	Temp	Forecast	Wind	Precip
Tonight	51°F	Chance Showers And Thunderstorms then Rain Likely	2 to 10 mph NNW	67%
Saturday	59°F	Rain	6 to 9 mph N	76%
Saturday Night	47°F	Rain Likely	2 to 7 mph WSW	63%
Sunday	67°F	Slight Chance Light Rain then Partly Sunny	2 to 6 mph SSW	19%
Sunday Night	46°F	Mostly Clear	9 mph SSE	0%
Monday	75°F	Sunny	6 mph SSE	0%
Monday Night	49°F	Mostly Clear	7 to 13 mph SSW	1%
Tuesday	77°F	Mostly Sunny	3 to 7 mph WNW	1%
Tuesday Night	50°F	Mostly Clear	5 to 8 mph WNW	1%
Wednesday	77°F	Sunny	5 to 8 mph WSW	2%
Wednesday Night	50°F	Mostly Clear	6 to 9 mph WSW	1%
Thursday	79°F	Sunny	5 to 9 mph S	2%
Thursday Night	52°F	Mostly Clear	10 to 15 mph S	2%
Friday	80°F	Mostly Sunny	7 to 10 mph SSW	1%

Forecast source: National Weather Service (api.weather.gov) for Windham (47.078, -110.139). Updated through the day.

Growing snapshot for Windham

Last spring frost

May 25

First fall frost

Sep 21

Growing season

118 days

Hardiness zone

More local growing data for Windham: nearby ZIP 59479 weather · frost dates · planting calendar · Montana frost dates

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