Sand Coulee, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sand Coulee, a community in Cascade County, Montana.
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. South wind around 3 mph.
7-day forecast for Sand Coulee
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 3 mph S | 0% |
| Tuesday | 77°F | Sunny | 2 to 6 mph NNE | 0% |
| Tuesday Night | 50°F | Mostly Clear | 8 mph SE | 1% |
| Wednesday | 85°F | Sunny | 5 to 9 mph WSW | 0% |
| Wednesday Night | 54°F | Mostly Clear | 5 to 8 mph S | 0% |
| Thursday | 93°F | Sunny | 7 to 12 mph WSW | 0% |
| Thursday Night | 58°F | Clear | 7 mph ESE | 0% |
| Friday | 96°F | Sunny | 6 to 18 mph WSW | 0% |
| Friday Night | 60°F | Mostly Clear | 8 to 14 mph WSW | 0% |
| Saturday | 94°F | Sunny | 9 mph WSW | 0% |
| Saturday Night | 60°F | Mostly Clear | 6 to 12 mph W | 1% |
| Sunday | 89°F | Sunny | 5 to 8 mph NW | 0% |
| Sunday Night | 57°F | Partly Cloudy | 5 to 10 mph NNE | 4% |
| Monday | 87°F | Sunny | 3 to 7 mph NW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Sand Coulee (47.402, -111.173). Updated through the day.
Growing snapshot for Sand Coulee
Last spring frost
May 6
First fall frost
Oct 1
Growing season
147 days
Hardiness zone
4b
More local growing data for Sand Coulee: nearby ZIP 59472 weather · frost dates · planting calendar · Montana frost dates
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Sun Prairie
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Climate data from the nearest NOAA station, Great Falls 16St, Mt (10.9 mi from Sand Coulee). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.