Shelby, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shelby, a city in Toole County, Montana.
This Afternoon
47°F
Mostly Sunny
Mostly sunny. High near 47, with temperatures falling to around 42 in the afternoon. Southeast wind around 3 mph.
7-day forecast for Shelby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Mostly Sunny | 3 mph SE | 0% |
| Tonight | 28°F | Mostly Cloudy then Patchy Fog | 1 to 6 mph NNW | 0% |
| Wednesday | 47°F | Patchy Fog then Mostly Sunny | 2 to 6 mph NW | 0% |
| Wednesday Night | 27°F | Patchy Fog | 2 mph SSW | 0% |
| Thursday | 52°F | Patchy Fog then Mostly Sunny | 2 to 17 mph WSW | 0% |
| Thursday Night | 32°F | Partly Cloudy | 8 to 14 mph WSW | 0% |
| Friday | 52°F | Mostly Sunny | 8 to 16 mph SW | 2% |
| Friday Night | 36°F | Partly Cloudy | 14 to 23 mph WSW | 2% |
| Saturday | 53°F | Mostly Sunny | 6 to 15 mph WSW | 1% |
| Saturday Night | 34°F | Mostly Cloudy | 6 mph SW | 0% |
| Sunday | 59°F | Partly Sunny | 5 to 13 mph SW | 1% |
| Sunday Night | 36°F | Mostly Cloudy | 6 to 14 mph W | 2% |
| Monday | 52°F | Partly Sunny | 7 mph WSW | 2% |
| Monday Night | 35°F | Mostly Cloudy | 7 mph S | 1% |
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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Eagle Creek Colony
Glacier Colony
Hillside Colony
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 Nov 4, 2026.