Basin, MT Weather & Growing Conditions
Overnight
43°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 3am, then rain. Cloudy, with a low around 43. North northeast wind around 9 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 43°F | Showers And Thunderstorms Likely | 9 mph NNE | 97% |
| Saturday | 47°F | Showers And Thunderstorms | 8 mph NE | 99% |
| Saturday Night | 38°F | Slight Chance Light Rain then Mostly Cloudy | 2 to 6 mph N | 23% |
| Sunday | 59°F | Patchy Fog then Mostly Sunny | 5 mph WNW | 0% |
| Sunday Night | 40°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 64°F | Sunny | 7 mph WSW | 0% |
| Monday Night | 43°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 64°F | Sunny | 6 mph WSW | 1% |
| Tuesday Night | 44°F | Mostly Clear | 5 mph SSW | 1% |
| Wednesday | 65°F | Sunny | 3 to 8 mph SSW | 2% |
| Wednesday Night | 45°F | Mostly Clear | 3 to 8 mph SSW | 4% |
| Thursday | 66°F | Sunny | 9 mph SSW | 3% |
| Thursday Night | 45°F | Mostly Clear | 6 to 10 mph S | 5% |
| Friday | 65°F | Mostly Sunny | 10 mph SSW | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Basin, MT
Last spring frost
Jun 7
First fall frost
Sep 8
Growing season
90 days
Hardiness zone
5a
Explore more for Basin, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Boulder, Mt (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.