Bainville, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bainville, a town in Roosevelt County, Montana.
This Afternoon
79°F
Mostly Sunny
Mostly sunny, with a high near 79. Northwest wind around 7 mph.
7-day forecast for Bainville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Sunny | 7 mph NW | 5% |
| Tonight | 56°F | Chance Showers And Thunderstorms | 6 to 10 mph NE | 30% |
| Saturday | 68°F | Chance Rain Showers | 10 to 16 mph ENE | 27% |
| Saturday Night | 51°F | Chance Rain Showers | 14 mph E | 43% |
| Sunday | 63°F | Chance Rain Showers | 14 mph ESE | 52% |
| Sunday Night | 48°F | Mostly Cloudy | 7 to 13 mph ESE | 3% |
| Monday | 70°F | Mostly Sunny | 7 to 16 mph SE | 2% |
| Monday Night | 50°F | Partly Cloudy | 15 mph SSE | 0% |
| Tuesday | 76°F | Mostly Sunny | 13 to 17 mph SSE | 0% |
| Tuesday Night | 53°F | Partly Cloudy | 9 to 16 mph SE | 4% |
| Wednesday | 79°F | Sunny | 10 mph SSE | 8% |
| Wednesday Night | 53°F | Mostly Clear | 7 mph SSE | 9% |
| Thursday | 80°F | Sunny | 3 to 9 mph SE | 2% |
| Thursday Night | 55°F | Mostly Clear | 9 mph SE | 3% |
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 Sep 19, 2026.