Fromberg, MT Weather & Growing Conditions
Overnight
30°F
Mostly Clear
Mostly clear. Low around 30, with temperatures rising to around 32 overnight. South southwest wind 5 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 30°F | Mostly Clear | 5 to 9 mph SSW | 0% |
| Wednesday | 51°F | Sunny | 5 mph NW | 0% |
| Wednesday Night | 30°F | Partly Cloudy | 5 to 13 mph WNW | 0% |
| Thursday | 55°F | Mostly Sunny | 2 to 14 mph SSW | 14% |
| Thursday Night | 33°F | Slight Chance Rain Showers | 5 mph WSW | 20% |
| Friday | 53°F | Sunny | 5 to 14 mph S | 3% |
| Friday Night | 35°F | Partly Cloudy | 10 to 17 mph S | 0% |
| Saturday | 56°F | Sunny | 9 to 15 mph S | 0% |
| Saturday Night | 39°F | Mostly Clear | 9 to 23 mph S | 0% |
| Sunday | 62°F | Mostly Sunny | 15 to 24 mph S | 0% |
| Sunday Night | 38°F | Partly Cloudy | 6 to 15 mph S | 0% |
| Monday | 56°F | Mostly Sunny | 6 mph NE | 1% |
| Monday Night | 37°F | Mostly Cloudy | 5 to 8 mph S | 1% |
| Tuesday | 59°F | Mostly Sunny | 9 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fromberg, MT
Last spring frost
May 14
First fall frost
Sep 24
Growing season
129 days
Hardiness zone
5a
Explore more for Fromberg, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Bridger 2 N, Mt (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.