Big Stone Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Stone Colony, a community in Cascade County, Montana.
Overnight
31°F
Mostly Cloudy
Mostly cloudy, with a low around 31. South southwest wind around 5 mph.
7-day forecast for Big Stone Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 31°F | Mostly Cloudy | 5 mph SSW | 0% |
| Wednesday | 49°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 33°F | Mostly Clear | 2 to 15 mph S | 0% |
| Thursday | 54°F | Mostly Sunny | 15 to 21 mph SW | 0% |
| Thursday Night | 36°F | Partly Cloudy | 18 mph SW | 0% |
| Friday | 54°F | Sunny | 17 to 26 mph SW | 1% |
| Friday Night | 42°F | Partly Cloudy | 21 to 28 mph SW | 1% |
| Saturday | 60°F | Mostly Sunny | 7 to 21 mph SW | 1% |
| Saturday Night | 44°F | Partly Cloudy | 7 to 21 mph SSW | 0% |
| Sunday | 61°F | Partly Sunny | 13 to 23 mph SW | 2% |
| Sunday Night | 40°F | Mostly Cloudy | 9 to 14 mph SW | 2% |
| Monday | 55°F | Mostly Sunny | 2 to 9 mph SW | 0% |
| Monday Night | 41°F | Mostly Cloudy | 2 to 16 mph SSW | 0% |
| Tuesday | 58°F | Mostly Sunny | 14 to 23 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Big Stone Colony (47.400, -111.209). Updated through the day.
Growing snapshot for Big Stone Colony
Last spring frost
May 6
First fall frost
Oct 1
Growing season
147 days
Hardiness zone
4b
More local growing data for Big Stone Colony: 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 Big Stone Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.