Sunburst, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sunburst, a town in Toole County, Montana.
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. West southwest wind around 3 mph.
7-day forecast for Sunburst
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 3 mph WSW | 0% |
| Tuesday | 77°F | Sunny | 2 to 6 mph WSW | 1% |
| Tuesday Night | 50°F | Mostly Clear | 3 to 8 mph SW | 1% |
| Wednesday | 82°F | Mostly Sunny | 5 to 8 mph NW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 7 mph SSW | 0% |
| Thursday | 88°F | Sunny | 6 to 13 mph NNW | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 12 mph NE | 0% |
| Friday | 92°F | Sunny | 2 to 18 mph W | 0% |
| Friday Night | 56°F | Mostly Clear | 14 mph NW | 0% |
| Saturday | 88°F | Sunny | 7 to 10 mph NW | 1% |
| Saturday Night | 56°F | Partly Cloudy | 9 to 13 mph N | 1% |
| Sunday | 82°F | Mostly Sunny | 8 to 12 mph NNW | 1% |
| Sunday Night | 54°F | Partly Cloudy | 12 mph N | 13% |
| Monday | 81°F | Mostly Sunny | 10 mph NNE | 11% |
Forecast source: National Weather Service (api.weather.gov) for Sunburst (48.874, -111.901). Updated through the day.
Growing snapshot for Sunburst
Last spring frost
May 17
First fall frost
Sep 25
Growing season
129 days
Hardiness zone
4a
More local growing data for Sunburst: nearby ZIP 59482 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Sunburst 8 E, Mt (5.9 mi from Sunburst). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.