It hardly ever freezes in Big Sky
Big Sky has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 78°, a January night drops to 8°. A typical November afternoon reaches 37°, and nights fall to 15°.
Getting the latest forecast from the National Weather Service…
What stands out about Big Sky’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Big Sky’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Big Sky.
Your answer becomes a post in Town Square.
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 itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Big Sky 2wnw, MT (1 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.