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Big Sky Colony, MT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Big Sky Colony, a community in Glacier County, Montana.

Today
66°F
Sunny
Sunny, with a high near 66. South southeast wind 2 to 13 mph, with gusts as high as 22 mph.

7-day forecast for Big Sky Colony

WhenTempForecastWindPrecip
Today 66°F Sunny 2 to 13 mph SSE 0%
Tonight 43°F Mostly Clear 6 to 13 mph S 0%
Sunday 72°F Sunny 7 mph S 0%
Sunday Night 43°F Mostly Clear 5 to 9 mph S 0%
Monday 75°F Sunny 5 to 9 mph SW 0%
Monday Night 46°F Mostly Clear 6 to 9 mph WSW 0%
Tuesday 71°F Sunny 7 mph W 0%
Tuesday Night 46°F Partly Cloudy 7 mph WSW 0%
Wednesday 72°F Mostly Sunny 6 to 13 mph SW 0%
Wednesday Night 47°F Partly Cloudy 7 to 10 mph SW 1%
Thursday 71°F Mostly Sunny 9 mph SW 2%
Thursday Night 46°F Partly Cloudy 5 to 8 mph SW 8%
Friday 64°F Partly Sunny 6 to 10 mph W 9%
Friday Night 42°F Chance Light Rain 10 mph WNW 30%

Forecast source: National Weather Service (api.weather.gov) for Big Sky Colony (48.839, -112.768). Updated through the day.

Growing snapshot for Big Sky Colony

Last spring frost
May 24
First fall frost
Sep 15
Growing season
113 days
Hardiness zone
4a

More local growing data for Big Sky Colony: nearby ZIP 59427 weather · frost dates · planting calendar · Montana frost dates

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Climate data from the nearest NOAA station, Cut Bank Muni Ap, Mt (16.3 mi from Big Sky Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.