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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.

This Afternoon
66°F
Sunny
Sunny, with a high near 66. South southeast wind around 13 mph, with gusts as high as 23 mph.

7-day forecast for Big Sky Colony

WhenTempForecastWindPrecip
This Afternoon 66°F Sunny 13 mph SSE 1%
Tonight 43°F Mostly Clear 7 to 14 mph S 1%
Sunday 73°F Sunny 8 mph S 0%
Sunday Night 43°F Mostly Clear 5 to 8 mph S 0%
Monday 75°F Sunny 5 to 8 mph SSW 0%
Monday Night 46°F Mostly Clear 8 mph WSW 0%
Tuesday 74°F Sunny 8 mph WSW 0%
Tuesday Night 48°F Partly Cloudy 7 mph WSW 0%
Wednesday 71°F Mostly Sunny 6 to 14 mph WSW 0%
Wednesday Night 47°F Partly Cloudy 8 to 12 mph SW 2%
Thursday 68°F Mostly Sunny 8 to 12 mph SW 1%
Thursday Night 46°F Partly Cloudy 5 to 9 mph SSW 12%
Friday 64°F Partly Sunny 5 to 9 mph SW 13%
Friday Night 42°F Slight Chance Light Rain 12 mph W 22%

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 20, 2026.