Big Sky, MT Weather & Growing Conditions
Today
65°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 65. East northeast wind 1 to 7 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Areas Of Smoke | 1 to 7 mph ENE | 0% |
| Tonight | 43°F | Areas Of Smoke | 1 to 6 mph NNW | 0% |
| Wednesday | 71°F | Patchy Smoke | 1 to 7 mph W | 0% |
| Wednesday Night | 48°F | Patchy Smoke then Mostly Clear | 2 to 7 mph SW | 0% |
| Thursday | 79°F | Sunny | 2 to 8 mph WSW | 0% |
| Thursday Night | 52°F | Mostly Clear | 1 to 7 mph SW | 0% |
| Friday | 82°F | Sunny | 2 to 12 mph SW | 0% |
| Friday Night | 54°F | Mostly Clear | 2 to 13 mph WSW | 0% |
| Saturday | 80°F | Sunny | 2 to 13 mph SW | 2% |
| Saturday Night | 53°F | Partly Cloudy | 1 to 10 mph S | 2% |
| Sunday | 79°F | Sunny | 1 to 9 mph SW | 3% |
| Sunday Night | 51°F | Partly Cloudy | 1 to 8 mph NE | 7% |
| Monday | 77°F | Sunny | 1 to 9 mph WSW | 3% |
| Monday Night | 51°F | Partly Cloudy | 2 to 8 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Sky, MT
Growing season
50 days
Hardiness zone
4b
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 (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.