Sunburst, MT Weather & Growing Conditions
Overnight
48°F
Mostly Cloudy
Mostly cloudy, with a low around 48. North wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Cloudy | 2 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 2 to 9 mph ESE | 0% |
| Saturday Night | 45°F | Mostly Clear | 10 mph SE | 0% |
| Sunday | 71°F | Sunny | 13 mph SSE | 0% |
| Sunday Night | 47°F | Mostly Clear | 10 to 14 mph SSE | 0% |
| Monday | 77°F | Sunny | 13 mph S | 0% |
| Monday Night | 47°F | Mostly Clear | 6 to 10 mph SSW | 0% |
| Tuesday | 73°F | Sunny | 6 mph WSW | 0% |
| Tuesday Night | 48°F | Mostly Clear | 7 mph S | 0% |
| Wednesday | 75°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 49°F | Partly Cloudy | 9 mph SSW | 2% |
| Thursday | 73°F | Mostly Sunny | 8 mph SSW | 1% |
| Thursday Night | 48°F | Partly Cloudy | 8 mph WNW | 13% |
| Friday | 67°F | Mostly Sunny | 8 to 13 mph WSW | 8% |
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 Sep 19, 2026.