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Weather in Big Sky Colony, MT · National Weather Service + NOAA

Big Sky Colony stays cool in summer

Big Sky Colony has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 77°, a January night drops to 12°. A typical November afternoon reaches 39°, and nights fall to 20°.

Winter 32°/13°Spring 50°/27°Summer 73°/46°Fall 53°/30°
Right now
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Sunrise 9:23 am · sunset 7:06 pm

Getting the latest forecast from the National Weather Service…

What stands out about Big Sky Colony’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Cool summersJuly afternoons average 77°, cooler than 97% of U.S. towns.A dry climateJust 15 inches of rain and melted snow a year, less than 94% of U.S. towns.A long heating seasonMore heating degree days than 95% of U.S. towns.
A normal year

Where today sits in Big Sky Colony’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
32° / 13°
Snow is rare
Spring
50° / 27°
Last frost around May 28
Summer
73° / 46°
6 days reach 90° in a normal year
Fall now
53° / 30°
First frost around Sep 16
Pastthe usual first frost (Sep 16). Last frost next spring: May 28
Best months to be outside
JunJulAug
Highs of 62–84° and lows of 40° or more
When is it wettest?June, with 3.2 inches.Is it warmer than it used to be?+1.8° vs. the 20th century.What is each month like?Highs, lows, rain and snow for all 12.

Weather talk

Road reports, first frosts and storm memories from neighbors in Big Sky Colony.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Big Sky Colony itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Del Bonita, MT (11 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.