Big Sky, MT Weather & Growing Conditions
Today
62°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 62. North wind 2 to 12 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Areas Of Smoke | 2 to 12 mph N | 0% |
| Tonight | 40°F | Patchy Smoke | 3 to 12 mph NNE | 0% |
| Wednesday | 69°F | Patchy Smoke | 5 to 13 mph W | 0% |
| Wednesday Night | 45°F | Patchy Smoke then Mostly Clear | 5 to 12 mph WSW | 0% |
| Thursday | 76°F | Sunny | 6 to 14 mph WSW | 0% |
| Thursday Night | 50°F | Mostly Clear | 5 to 13 mph WSW | 0% |
| Friday | 78°F | Sunny | 6 to 17 mph SW | 0% |
| Friday Night | 51°F | Mostly Clear | 6 to 16 mph W | 0% |
| Saturday | 76°F | Sunny | 6 to 16 mph WSW | 2% |
| Saturday Night | 52°F | Partly Cloudy | 5 to 14 mph W | 2% |
| Sunday | 75°F | Sunny | 5 to 15 mph WSW | 3% |
| Sunday Night | 50°F | Partly Cloudy | 5 to 13 mph WNW | 7% |
| Monday | 74°F | Sunny | 5 to 14 mph WSW | 4% |
| Monday Night | 49°F | Partly Cloudy | 5 to 12 mph WSW | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Sky, MT
Growing season
50 days
Hardiness zone
5a
Explore more for Big Sky, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Big Sky 2Wnw, Mt (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.