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.
This Afternoon
72°F
Mostly Cloudy
Mostly cloudy, with a high near 72. North northeast wind around 9 mph.
7-day forecast for Big Stone Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Cloudy | 9 mph NNE | 10% |
| Tonight | 52°F | Slight Chance Showers And Thunderstorms then Chance Rain | 2 to 10 mph NNW | 45% |
| Saturday | 64°F | Chance Light Rain | 3 to 7 mph NNW | 34% |
| Saturday Night | 48°F | Mostly Cloudy | 3 to 7 mph SSE | 12% |
| Sunday | 73°F | Mostly Sunny | 3 mph S | 2% |
| Sunday Night | 49°F | Mostly Clear | 5 to 8 mph SSE | 0% |
| Monday | 78°F | Sunny | 6 mph SSW | 0% |
| Monday Night | 53°F | Mostly Clear | 2 to 9 mph SSW | 0% |
| Tuesday | 77°F | Sunny | 7 mph WSW | 1% |
| Tuesday Night | 52°F | Mostly Clear | 6 mph SSE | 1% |
| Wednesday | 78°F | Sunny | 7 mph SW | 1% |
| Wednesday Night | 53°F | Mostly Clear | 7 mph SSW | 2% |
| Thursday | 79°F | Sunny | 7 mph SSW | 2% |
| Thursday Night | 54°F | Partly Cloudy | 6 to 12 mph SSE | 2% |
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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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 Sep 19, 2026.