Sunburst, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sunburst, a town in Toole County, Montana.
Tonight
30°F
Mostly Cloudy
Mostly cloudy, with a low around 30. West southwest wind around 6 mph.
7-day forecast for Sunburst
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Mostly Cloudy | 6 mph WSW | 0% |
| Wednesday | 47°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Wednesday Night | 29°F | Mostly Clear | 2 to 8 mph S | 0% |
| Thursday | 52°F | Mostly Sunny | 8 to 20 mph SW | 0% |
| Thursday Night | 33°F | Partly Cloudy | 10 to 14 mph SW | 0% |
| Friday | 52°F | Mostly Sunny | 10 to 22 mph SW | 4% |
| Friday Night | 35°F | Partly Cloudy | 15 to 24 mph WSW | 4% |
| Saturday | 52°F | Mostly Sunny | 7 to 15 mph WSW | 1% |
| Saturday Night | 36°F | Mostly Cloudy | 7 to 12 mph SW | 0% |
| Sunday | 58°F | Partly Sunny | 12 to 17 mph SW | 1% |
| Sunday Night | 36°F | Mostly Cloudy | 7 to 17 mph WSW | 3% |
| Monday | 51°F | Partly Sunny | 7 to 10 mph SW | 3% |
| Monday Night | 36°F | Mostly Cloudy | 10 mph S | 2% |
| Tuesday | 55°F | Partly Sunny | 10 to 17 mph SSW | 1% |
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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Shelby
Sweet Grass
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 Nov 4, 2026.