Radersburg, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Radersburg, a community in Broadwater County, Montana.
Overnight
45°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 45. North northwest wind around 2 mph.
7-day forecast for Radersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Patchy Smoke | 2 mph NNW | 0% |
| Tuesday | 75°F | Patchy Smoke | 1 to 6 mph ENE | 0% |
| Tuesday Night | 48°F | Patchy Smoke then Mostly Clear | 1 to 7 mph N | 0% |
| Wednesday | 82°F | Sunny | 2 to 8 mph ENE | 0% |
| Wednesday Night | 50°F | Mostly Clear | 2 to 9 mph NW | 0% |
| Thursday | 89°F | Sunny | 2 to 10 mph SSW | 0% |
| Thursday Night | 55°F | Mostly Clear | 2 to 12 mph NW | 0% |
| Friday | 93°F | Sunny | 3 to 17 mph SW | 0% |
| Friday Night | 56°F | Mostly Clear | 5 to 16 mph NW | 0% |
| Saturday | 91°F | Sunny | 2 to 12 mph SW | 0% |
| Saturday Night | 57°F | Mostly Clear | 3 to 13 mph NNW | 2% |
| Sunday | 89°F | Sunny | 2 to 9 mph N | 1% |
| Sunday Night | 56°F | Partly Cloudy | 5 to 14 mph N | 2% |
| Monday | 87°F | Sunny | 1 to 10 mph NNE | 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 Aug 4, 2026.