Big Timber, MT Weather & Growing Conditions
Tonight
29°F
Partly Cloudy
Partly cloudy. Low around 29, with temperatures rising to around 31 overnight. West northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Partly Cloudy | 2 mph WNW | 0% |
| Wednesday | 54°F | Sunny | 0 to 9 mph NW | 0% |
| Wednesday Night | 29°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 55°F | Mostly Sunny | 5 to 13 mph WSW | 3% |
| Thursday Night | 30°F | Partly Cloudy | 7 to 12 mph W | 3% |
| Friday | 55°F | Sunny | 12 to 20 mph WSW | 5% |
| Friday Night | 35°F | Partly Cloudy | 12 to 21 mph WSW | 5% |
| Saturday | 59°F | Sunny | 6 to 18 mph WSW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 6 to 14 mph WSW | 0% |
| Sunday | 64°F | Mostly Sunny | 10 to 18 mph WSW | 0% |
| Sunday Night | 37°F | Partly Cloudy | 7 to 14 mph WSW | 0% |
| Monday | 57°F | Mostly Sunny | 3 to 7 mph SW | 1% |
| Monday Night | 36°F | Partly Cloudy | 3 to 8 mph SW | 1% |
| Tuesday | 60°F | Mostly Sunny | 8 to 13 mph WSW | 1% |
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 Nov 4, 2026.