Marion, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marion, a community in Flathead County, Montana.
Overnight
22°F
Mostly Cloudy
Mostly cloudy, with a low around 22. Wind around 0 mph.
7-day forecast for Marion
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 22°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 46°F | Mostly Sunny | 1 mph SW | 0% |
| Wednesday Night | 23°F | Mostly Clear | 1 mph SSW | 1% |
| Thursday | 42°F | Partly Sunny | 1 to 5 mph SSW | 9% |
| Thursday Night | 25°F | Mostly Cloudy | 3 mph SSW | 2% |
| Friday | 45°F | Partly Sunny then Slight Chance Light Rain | 2 to 6 mph SSW | 16% |
| Friday Night | 28°F | Slight Chance Light Rain | 5 mph SSW | 16% |
| Saturday | 51°F | Partly Sunny | 2 mph S | 4% |
| Saturday Night | 30°F | Mostly Cloudy then Chance Light Rain | 3 mph SSE | 33% |
| Sunday | 52°F | Chance Light Rain | 3 to 9 mph SSW | 33% |
| Sunday Night | 29°F | Mostly Cloudy | 1 to 6 mph SW | 11% |
| Monday | 48°F | Partly Sunny then Slight Chance Light Rain | 2 mph S | 19% |
| Monday Night | 30°F | Slight Chance Light Rain | 1 mph S | 20% |
| Tuesday | 51°F | Slight Chance Light Rain | 3 mph SSW | 21% |
Forecast source: National Weather Service (api.weather.gov) for Marion (48.086, -114.680). Updated through the day.
Growing snapshot for Marion
Last spring frost
May 12
First fall frost
Sep 25
Growing season
134 days
Hardiness zone
5b
More local growing data for Marion: nearby ZIP 59920 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Columbia Falls
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Hungry Horse
Kalispell
Kila
Lakeside
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Martin City
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Pinnacle
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Snowslip
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West Glacier
Whitefish
Woods Bay
Climate data from the nearest NOAA station, Creston, Mt (25.4 mi from Marion). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.