Marysville, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marysville, a community in Lewis And Clark County, Montana.
This Afternoon
65°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a high near 65. North northeast wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Marysville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Chance Showers And Thunderstorms | 10 mph NNE | 39% |
| Tonight | 51°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 6 to 12 mph NNE | 95% |
| Saturday | 56°F | Rain then Chance Showers And Thunderstorms | 9 mph NNE | 93% |
| Saturday Night | 46°F | Slight Chance Light Rain then Mostly Cloudy | 3 to 7 mph W | 22% |
| Sunday | 65°F | Mostly Sunny | 6 mph SSW | 0% |
| Sunday Night | 47°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 69°F | Sunny | 3 to 7 mph SW | 0% |
| Monday Night | 48°F | Mostly Clear | 7 mph WSW | 0% |
| Tuesday | 69°F | Sunny | 6 mph WSW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 6 mph W | 1% |
| Wednesday | 69°F | Sunny | 5 to 8 mph SW | 1% |
| Wednesday Night | 50°F | Mostly Clear | 3 to 7 mph WSW | 2% |
| Thursday | 70°F | Sunny | 6 mph S | 0% |
| Thursday Night | 52°F | Mostly Clear | 6 mph SSW | 1% |
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 Sep 19, 2026.