Shelby, MT Weather & Growing Conditions
Today
76°F
Sunny
Sunny, with a high near 76. West southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Sunny | 5 mph WSW | 1% |
| Tonight | 50°F | Mostly Clear | 5 to 9 mph WSW | 1% |
| Wednesday | 82°F | Mostly Sunny | 6 to 9 mph WNW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 7 mph WSW | 0% |
| Thursday | 89°F | Sunny | 6 to 12 mph NW | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 12 mph NE | 0% |
| Friday | 92°F | Sunny | 3 to 21 mph NW | 0% |
| Friday Night | 57°F | Mostly Clear | 14 to 20 mph W | 0% |
| Saturday | 89°F | Sunny | 7 to 12 mph WNW | 0% |
| Saturday Night | 57°F | Partly Cloudy | 9 to 15 mph NW | 0% |
| Sunday | 84°F | Mostly Sunny | 10 mph NNW | 1% |
| Sunday Night | 55°F | Partly Cloudy | 12 mph N | 9% |
| Monday | 81°F | Mostly Sunny | 9 mph NNE | 7% |
| Monday Night | 54°F | Mostly Clear | 10 mph NE | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Shelby, MT
Last spring frost
May 23
First fall frost
Sep 16
Growing season
115 days
Hardiness zone
4a
Explore more for Shelby, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Shelby, Mt (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.