Radersburg, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Radersburg, a community in Broadwater County, Montana.
Overnight
28°F
Partly Cloudy
Partly cloudy, with a low around 28. North northwest wind around 1 mph.
7-day forecast for Radersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 28°F | Partly Cloudy | 1 mph NNW | 0% |
| Wednesday | 47°F | Mostly Sunny | 0 to 3 mph ESE | 0% |
| Wednesday Night | 27°F | Mostly Clear | 1 to 6 mph WSW | 0% |
| Thursday | 47°F | Partly Sunny | 5 mph SW | 10% |
| Thursday Night | 28°F | Partly Cloudy | 5 mph W | 10% |
| Friday | 50°F | Sunny | 3 to 12 mph SSW | 0% |
| Friday Night | 32°F | Partly Cloudy | 6 to 9 mph SW | 0% |
| Saturday | 54°F | Mostly Sunny | 3 to 8 mph S | 0% |
| Saturday Night | 33°F | Partly Cloudy | 5 to 9 mph S | 0% |
| Sunday | 59°F | Mostly Sunny | 6 to 13 mph SSW | 2% |
| Sunday Night | 33°F | Mostly Cloudy | 2 to 7 mph W | 2% |
| Monday | 53°F | Mostly Sunny | 5 mph SSW | 2% |
| Monday Night | 33°F | Mostly Cloudy | 5 mph SSW | 2% |
| Tuesday | 56°F | Mostly Sunny | 5 to 8 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Radersburg (46.196, -111.631). Updated through the day.
Growing snapshot for Radersburg
Last spring frost
May 19
First fall frost
Sep 19
Growing season
122 days
Hardiness zone
5a
More local growing data for Radersburg: nearby ZIP 59643 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Townsend 3Se, Mt (12.9 mi from Radersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.