Chester, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chester, a town in Liberty County, Montana.
Today
77°F
Sunny
Sunny, with a high near 77. West wind 2 to 6 mph.
7-day forecast for Chester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 2 to 6 mph W | 1% |
| Tonight | 48°F | Mostly Clear | 5 mph SW | 1% |
| Wednesday | 84°F | Mostly Sunny | 3 to 7 mph W | 0% |
| Wednesday Night | 51°F | Mostly Clear | 1 to 7 mph N | 0% |
| Thursday | 91°F | Sunny | 2 to 9 mph NW | 0% |
| Thursday Night | 54°F | Mostly Clear | 9 mph NE | 0% |
| Friday | 94°F | Sunny | 5 to 14 mph E | 0% |
| Friday Night | 56°F | Clear | 10 mph N | 0% |
| Saturday | 91°F | Sunny | 6 to 9 mph NNW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 8 mph NNE | 1% |
| Sunday | 87°F | Mostly Sunny | 7 mph N | 0% |
| Sunday Night | 54°F | Partly Cloudy | 10 mph NNE | 8% |
| Monday | 84°F | Mostly Sunny | 6 to 9 mph NE | 6% |
| Monday Night | 53°F | Mostly Clear | 10 mph NE | 14% |
Forecast source: National Weather Service (api.weather.gov) for Chester (48.511, -110.966). Updated through the day.
Growing snapshot for Chester
Last spring frost
May 24
First fall frost
Sep 17
Growing season
115 days
Hardiness zone
4a
More local growing data for Chester: nearby ZIP 59522 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chester, Mt (3.3 mi from Chester). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.