Bainville, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bainville, a town in Roosevelt County, Montana.
Tonight
25°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 25. Wind around 0 mph.
7-day forecast for Bainville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 25°F | Patchy Fog | 0 mph | 0% |
| Wednesday | 52°F | Patchy Fog then Mostly Sunny | 1 to 6 mph NW | 0% |
| Wednesday Night | 25°F | Partly Cloudy | 3 mph NE | 0% |
| Thursday | 50°F | Mostly Sunny | 1 to 9 mph SSE | 0% |
| Thursday Night | 28°F | Partly Cloudy | 3 to 7 mph SSW | 0% |
| Friday | 54°F | Sunny | 5 to 12 mph WSW | 1% |
| Friday Night | 33°F | Partly Cloudy | 7 to 12 mph WSW | 4% |
| Saturday | 56°F | Sunny | 8 to 20 mph W | 4% |
| Saturday Night | 29°F | Mostly Clear | 2 to 8 mph SSW | 0% |
| Sunday | 61°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 9 to 14 mph WSW | 1% |
| Monday | 55°F | Mostly Sunny | 6 to 14 mph W | 1% |
| Monday Night | 31°F | Partly Cloudy | 2 to 6 mph WSW | 0% |
| Tuesday | 57°F | Mostly Sunny | 3 to 9 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Bainville (48.144, -104.221). Updated through the day.
Growing snapshot for Bainville
Last spring frost
May 21
First fall frost
Sep 20
Growing season
120 days
Hardiness zone
4a
More local growing data for Bainville: nearby ZIP 59212 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Culbertson, Mt (17.6 mi from Bainville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.