Sunburst, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sunburst, a town in Toole County, Montana.
This Afternoon
47°F
Sunny
Sunny. High near 47, with temperatures falling to around 41 in the afternoon. Northeast wind around 3 mph.
7-day forecast for Sunburst
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Sunny | 3 mph NE | 0% |
| Tonight | 29°F | Mostly Clear | 3 to 9 mph S | 0% |
| Thursday | 52°F | Mostly Sunny | 9 to 20 mph SW | 1% |
| Thursday Night | 33°F | Mostly Clear | 9 to 14 mph WSW | 0% |
| Friday | 53°F | Mostly Sunny | 10 to 21 mph SW | 0% |
| Friday Night | 39°F | Mostly Cloudy | 12 to 20 mph SW | 1% |
| Saturday | 58°F | Mostly Sunny | 12 mph WSW | 1% |
| Saturday Night | 38°F | Mostly Cloudy | 10 mph S | 0% |
| Sunday | 61°F | Partly Sunny | 10 to 25 mph SW | 0% |
| Sunday Night | 35°F | Mostly Cloudy | 7 to 20 mph WSW | 0% |
| Monday | 51°F | Mostly Sunny | 6 to 10 mph SW | 1% |
| Monday Night | 36°F | Mostly Cloudy | 10 mph SSW | 1% |
| Tuesday | 55°F | Mostly Sunny | 10 to 18 mph SW | 1% |
| Tuesday Night | 39°F | Mostly Cloudy | 10 to 16 mph SW | 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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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.