Marysville, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marysville, a community in Lewis And Clark County, Montana.
Today
70°F
Patchy Smoke
Patchy smoke between 10am and 4pm. Sunny, with a high near 70. Northeast wind 2 to 6 mph.
7-day forecast for Marysville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Patchy Smoke | 2 to 6 mph NE | 0% |
| Tonight | 49°F | Mostly Clear | 7 mph WNW | 1% |
| Wednesday | 77°F | Sunny | 3 to 9 mph W | 0% |
| Wednesday Night | 53°F | Mostly Clear | 6 to 10 mph W | 0% |
| Thursday | 84°F | Sunny | 3 to 13 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 6 to 13 mph W | 0% |
| Friday | 86°F | Sunny | 3 to 16 mph WSW | 0% |
| Friday Night | 60°F | Mostly Clear | 13 to 17 mph W | 0% |
| Saturday | 84°F | Sunny | 6 to 14 mph WSW | 0% |
| Saturday Night | 59°F | Mostly Clear | 8 to 13 mph WNW | 0% |
| Sunday | 81°F | Sunny | 3 to 10 mph WNW | 0% |
| Sunday Night | 57°F | Mostly Clear | 6 to 10 mph NW | 1% |
| Monday | 80°F | Sunny | 3 to 9 mph N | 1% |
| Monday Night | 57°F | Mostly Clear | 6 to 10 mph NNW | 3% |
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 Aug 4, 2026.