Big Timber, MT Weather & Growing Conditions
Tonight
46°F
Rain Showers Likely
Rain showers likely and patchy fog before 1am, then patchy fog and a slight chance of rain showers between 1am and 3am, then a chance of rain showers and patchy fog. Mostly cloudy, with a low around 46. Northwest wind 5 to 8 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Rain Showers Likely | 5 to 8 mph NW | 74% |
| Sunday | 63°F | Patchy Fog | 5 mph NW | 21% |
| Sunday Night | 44°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 6 mph SE | 15% |
| Monday | 69°F | Mostly Sunny | 3 to 7 mph S | 3% |
| Monday Night | 44°F | Mostly Clear | 3 to 8 mph S | 0% |
| Tuesday | 75°F | Sunny | 5 mph SSW | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 6 mph SW | 4% |
| Wednesday | 75°F | Mostly Sunny | 7 mph WSW | 4% |
| Wednesday Night | 50°F | Mostly Clear | 7 mph SW | 2% |
| Thursday | 76°F | Sunny | 7 to 10 mph SW | 1% |
| Thursday Night | 50°F | Mostly Clear | 5 to 10 mph SW | 3% |
| Friday | 75°F | Mostly Sunny | 6 to 9 mph SSW | 2% |
| Friday Night | 49°F | Partly Cloudy | 12 mph SSW | 14% |
| Saturday | 67°F | Chance Rain Showers | 10 mph SW | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Timber, MT
Last spring frost
Jun 9
First fall frost
Sep 7
Growing season
88 days
Hardiness zone
4b
Explore more for Big Timber, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Melville 4 W, Mt (11.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.