Sunburst, MT Weather & Growing Conditions
Overnight
41°F
Mostly Clear
Mostly clear. Low around 41, with temperatures rising to around 44 overnight. Southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Mostly Clear | 2 mph SW | 0% |
| Tuesday | 76°F | Sunny | 5 mph SW | 1% |
| Tuesday Night | 49°F | Mostly Clear | 3 to 8 mph S | 1% |
| Wednesday | 81°F | Mostly Sunny | 5 to 8 mph NW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 7 mph S | 0% |
| Thursday | 87°F | Sunny | 6 to 13 mph NW | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 12 mph NE | 0% |
| Friday | 91°F | Sunny | 2 to 18 mph WNW | 0% |
| Friday Night | 55°F | Mostly Clear | 14 mph NW | 0% |
| Saturday | 87°F | Sunny | 7 to 10 mph NW | 1% |
| Saturday Night | 55°F | Partly Cloudy | 9 to 13 mph N | 1% |
| Sunday | 82°F | Mostly Sunny | 8 to 12 mph N | 1% |
| Sunday Night | 53°F | Partly Cloudy | 10 mph N | 12% |
| Monday | 80°F | Mostly Sunny | 10 mph NNE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sunburst, MT
Last spring frost
May 17
First fall frost
Sep 25
Growing season
129 days
Hardiness zone
4a
Explore more for Sunburst, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Sunburst 8 E, Mt (5.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.