Bainville, MT Weather & Growing Conditions
Today
48°F
Sunny
Sunny. High near 48, with temperatures falling to around 42 in the afternoon. North northwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 48°F | Sunny | 8 mph NNW | 0% |
| Tonight | 25°F | Partly Cloudy | 3 to 7 mph NE | 0% |
| Thursday | 45°F | Partly Sunny | 6 to 12 mph SE | 0% |
| Thursday Night | 30°F | Partly Cloudy | 8 mph SSW | 0% |
| Friday | 49°F | Sunny | 7 to 13 mph WSW | 0% |
| Friday Night | 33°F | Partly Cloudy | 7 to 14 mph SW | 0% |
| Saturday | 53°F | Sunny | 8 to 18 mph W | 0% |
| Saturday Night | 30°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Sunday | 58°F | Mostly Sunny | 7 to 13 mph SSW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 9 to 14 mph W | 0% |
| Monday | 52°F | Mostly Sunny | 7 to 16 mph W | 1% |
| Monday Night | 32°F | Partly Cloudy | 7 mph WSW | 1% |
| Tuesday | 53°F | Mostly Sunny | 6 to 9 mph S | 1% |
| Tuesday Night | 35°F | Partly Cloudy | 8 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bainville, MT
Last spring frost
May 21
First fall frost
Sep 20
Growing season
120 days
Hardiness zone
4a
Explore more for Bainville, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Culbertson, Mt (17.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.