Marysville, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marysville, a community in Lewis And Clark County, Montana.
Overnight
29°F
Partly Cloudy
Partly cloudy, with a low around 29. Southwest wind around 6 mph.
7-day forecast for Marysville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Partly Cloudy | 6 mph SW | 0% |
| Wednesday | 45°F | Mostly Sunny | 1 to 6 mph SSW | 0% |
| Wednesday Night | 29°F | Mostly Clear | 3 to 9 mph WSW | 0% |
| Thursday | 42°F | Partly Sunny | 8 to 12 mph WSW | 0% |
| Thursday Night | 30°F | Partly Cloudy | 12 to 16 mph WSW | 0% |
| Friday | 44°F | Mostly Sunny | 9 to 15 mph SW | 0% |
| Friday Night | 35°F | Mostly Cloudy | 9 to 22 mph SW | 0% |
| Saturday | 51°F | Mostly Sunny | 5 to 14 mph SW | 0% |
| Saturday Night | 37°F | Partly Cloudy | 5 to 12 mph SSW | 0% |
| Sunday | 54°F | Mostly Sunny | 8 to 14 mph WSW | 3% |
| Sunday Night | 35°F | Partly Cloudy | 7 to 13 mph W | 3% |
| Monday | 48°F | Partly Sunny | 3 to 7 mph WSW | 1% |
| Monday Night | 37°F | Mostly Cloudy | 3 to 9 mph WSW | 1% |
| Tuesday | 51°F | Mostly Sunny | 6 to 9 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Marysville (46.750, -112.303). Updated through the day.
Growing snapshot for Marysville
Last spring frost
Jun 4
First fall frost
Sep 14
Growing season
100 days
Hardiness zone
4b
More local growing data for Marysville: nearby ZIP 59640 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Austin 1 W, Mt (9.7 mi from Marysville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.