Shelby, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shelby, a city in Toole County, Montana.
Tonight
49°F
Mostly Cloudy
Mostly cloudy, with a low around 49. North wind around 5 mph.
7-day forecast for Shelby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Cloudy | 5 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 2 to 8 mph E | 0% |
| Saturday Night | 46°F | Partly Cloudy | 3 to 8 mph SE | 0% |
| Sunday | 72°F | Sunny | 3 to 9 mph SSE | 0% |
| Sunday Night | 47°F | Mostly Clear | 3 to 10 mph SE | 0% |
| Monday | 78°F | Sunny | 2 to 7 mph SSE | 0% |
| Monday Night | 48°F | Mostly Clear | 3 to 7 mph WSW | 0% |
| Tuesday | 73°F | Mostly Sunny | 7 mph WNW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 2 to 6 mph SSE | 1% |
| Wednesday | 74°F | Sunny | 2 to 9 mph WSW | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 2 to 7 mph W | 3% |
| Thursday | 74°F | Mostly Sunny | 2 to 6 mph SSW | 2% |
| Thursday Night | 49°F | Partly Cloudy | 3 to 8 mph E | 2% |
| Friday | 74°F | Mostly Sunny | 3 to 7 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Shelby (48.502, -111.862). Updated through the day.
Growing snapshot for Shelby
Last spring frost
May 23
First fall frost
Sep 16
Growing season
115 days
Hardiness zone
4a
More local growing data for Shelby: nearby ZIP 59474 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Camrose Colony
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Horizon Colony
Kevin
Rimrock Colony
Santa Rita
Sunburst
Sweet Grass
Climate data from the nearest NOAA station, Shelby, Mt (7.6 mi from Shelby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.