Chester, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chester, a town in Liberty County, Montana.
This Afternoon
73°F
Mostly Sunny
Mostly sunny, with a high near 73. North northeast wind around 9 mph.
7-day forecast for Chester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 9 mph NNE | 1% |
| Tonight | 49°F | Mostly Cloudy | 9 mph NE | 2% |
| Saturday | 69°F | Partly Sunny | 7 to 10 mph ENE | 1% |
| Saturday Night | 46°F | Mostly Cloudy | 2 to 8 mph SE | 0% |
| Sunday | 72°F | Sunny | 2 to 8 mph SSE | 0% |
| Sunday Night | 47°F | Mostly Clear | 5 to 8 mph SE | 0% |
| Monday | 77°F | Mostly Sunny | 3 to 8 mph SSE | 0% |
| Monday Night | 48°F | Mostly Clear | 1 to 7 mph SSW | 0% |
| Tuesday | 76°F | Sunny | 5 mph W | 0% |
| Tuesday Night | 48°F | Mostly Clear | 3 mph N | 1% |
| Wednesday | 76°F | Sunny | 0 to 7 mph SW | 1% |
| Wednesday Night | 48°F | Mostly Clear | 3 mph NW | 2% |
| Thursday | 75°F | Mostly Sunny | 1 to 6 mph SSW | 2% |
| Thursday Night | 49°F | Partly Cloudy | 3 to 7 mph E | 2% |
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 Sep 19, 2026.