Harman US

Big Timber, MT Weather & Growing Conditions

Overnight
52°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 52, with temperatures rising to around 55 overnight. North wind 8 to 12 mph. Chance of precipitation is 100%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 52°F Showers And Thunderstorms 8 to 12 mph N 100%
Saturday 57°F Patchy Fog 9 to 13 mph NNW 100%
Saturday Night 46°F Rain Showers 3 to 8 mph NNW 89%
Sunday 64°F Rain Showers Likely 3 mph SW 60%
Sunday Night 45°F Mostly Cloudy 1 to 5 mph SSE 6%
Monday 72°F Sunny 1 to 6 mph SSW 1%
Monday Night 47°F Mostly Clear 2 to 7 mph SW 0%
Tuesday 76°F Sunny 3 mph WSW 0%
Tuesday Night 49°F Partly Cloudy 3 mph SW 2%
Wednesday 77°F Sunny 6 mph SW 6%
Wednesday Night 50°F Mostly Clear 5 mph SW 4%
Thursday 78°F Sunny 7 mph SW 1%
Thursday Night 50°F Mostly Clear 2 to 7 mph SW 1%
Friday 78°F Mostly Sunny 2 to 8 mph SW 4%

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

Growing snapshot for Big Timber, MT

Last spring frost
May 14
First fall frost
Sep 26
Growing season
133 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Big Timber, Mt (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.