Bainville, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bainville, a town in Roosevelt County, Montana.
Overnight
44°F
Partly Cloudy
Partly cloudy, with a low around 44. West wind around 7 mph.
7-day forecast for Bainville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Partly Cloudy | 7 mph W | 0% |
| Tuesday | 73°F | Sunny | 7 to 16 mph W | 0% |
| Tuesday Night | 49°F | Mostly Clear | 3 to 13 mph WSW | 1% |
| Wednesday | 84°F | Partly Sunny | 7 to 17 mph WSW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 2 to 14 mph WSW | 0% |
| Thursday | 89°F | Sunny | 2 to 12 mph WNW | 0% |
| Thursday Night | 55°F | Mostly Clear | 6 to 12 mph N | 0% |
| Friday | 86°F | Sunny | 8 mph ENE | 0% |
| Friday Night | 56°F | Mostly Clear | 8 to 12 mph ENE | 2% |
| Saturday | 88°F | Sunny | 8 to 12 mph ENE | 1% |
| Saturday Night | 57°F | Mostly Clear | 9 to 13 mph NE | 1% |
| Sunday | 88°F | Partly Sunny | 9 to 15 mph ENE | 3% |
| Sunday Night | 57°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 15 mph ENE | 17% |
| Monday | 84°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 9 to 14 mph ENE | 18% |
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 Aug 4, 2026.