Fromberg, MT Weather & Growing Conditions
Today
56°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 56. North northwest wind 10 to 15 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Showers And Thunderstorms | 10 to 15 mph NNW | 94% |
| Tonight | 46°F | Patchy Fog | 7 to 15 mph NW | 93% |
| Sunday | 59°F | Rain Showers | 7 mph NNW | 76% |
| Sunday Night | 45°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph SSE | 15% |
| Monday | 69°F | Sunny | 3 to 10 mph S | 0% |
| Monday Night | 48°F | Mostly Clear | 5 to 8 mph SSE | 0% |
| Tuesday | 74°F | Sunny | 5 to 9 mph SSW | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 6 mph SSE | 2% |
| Wednesday | 75°F | Mostly Sunny | 7 mph SSW | 5% |
| Wednesday Night | 51°F | Partly Cloudy | 3 to 12 mph SSE | 3% |
| Thursday | 77°F | Sunny | 10 to 14 mph S | 0% |
| Thursday Night | 52°F | Mostly Clear | 6 to 12 mph SSE | 1% |
| Friday | 77°F | Mostly Sunny | 12 to 16 mph S | 2% |
| Friday Night | 50°F | Partly Cloudy | 8 to 14 mph S | 10% |
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 Sep 19, 2026.