Marion, MT Weather & Growing Conditions
This Afternoon
45°F
Partly Sunny
Partly sunny. High near 45, with temperatures falling to around 40 in the afternoon. East southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 45°F | Partly Sunny | 1 mph ESE | 0% |
| Tonight | 23°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 49°F | Mostly Sunny | 1 mph ESE | 0% |
| Wednesday Night | 23°F | Partly Cloudy | 1 mph SSE | 2% |
| Thursday | 45°F | Mostly Cloudy | 0 to 5 mph SSW | 9% |
| Thursday Night | 26°F | Mostly Cloudy | 3 mph SW | 4% |
| Friday | 46°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 6 mph SSW | 20% |
| Friday Night | 29°F | Slight Chance Light Rain then Mostly Cloudy | 2 to 6 mph SW | 20% |
| Saturday | 50°F | Partly Sunny | 3 mph SSW | 5% |
| Saturday Night | 30°F | Mostly Cloudy then Slight Chance Light Rain | 3 mph SSE | 16% |
| Sunday | 55°F | Chance Light Rain | 6 mph SSW | 29% |
| Sunday Night | 30°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph SW | 19% |
| Monday | 50°F | Mostly Cloudy | 2 mph S | 13% |
| Monday Night | 30°F | Chance Light Rain | 2 mph S | 27% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marion, MT
Growing season
44 days
Hardiness zone
4b
Explore more for Marion, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Libby 32 Sse, Mt (18.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.