Shelby, MT Weather & Growing Conditions
Today
77°F
Sunny
Sunny, with a high near 77. West southwest wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 1 to 5 mph WSW | 1% |
| Tonight | 49°F | Mostly Clear | 3 to 7 mph WSW | 1% |
| Wednesday | 83°F | Mostly Sunny | 7 mph WNW | 0% |
| Wednesday Night | 51°F | Mostly Clear | 6 mph SSW | 0% |
| Thursday | 90°F | Sunny | 3 to 10 mph NW | 0% |
| Thursday Night | 54°F | Mostly Clear | 3 to 10 mph ENE | 0% |
| Friday | 93°F | Sunny | 3 to 17 mph NW | 0% |
| Friday Night | 56°F | Mostly Clear | 13 mph W | 0% |
| Saturday | 90°F | Sunny | 6 to 10 mph NW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 8 to 13 mph NNW | 0% |
| Sunday | 85°F | Mostly Sunny | 7 to 10 mph NNW | 1% |
| Sunday Night | 54°F | Partly Cloudy | 9 mph NNE | 8% |
| Monday | 83°F | Mostly Sunny | 9 mph NE | 5% |
| Monday Night | 54°F | Mostly Clear | 10 mph NE | 11% |
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 (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.