Big Sky, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Sky, a community in Madison County, Montana.
Today
48°F
Sunny
Sunny. High near 48, with temperatures falling to around 42 in the afternoon. East northeast wind around 1 mph.
7-day forecast for Big Sky
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 48°F | Sunny | 1 mph ENE | 0% |
| Tonight | 24°F | Mostly Cloudy | 2 mph NW | 0% |
| Wednesday | 48°F | Mostly Sunny | 1 mph NNW | 0% |
| Wednesday Night | 24°F | Mostly Clear | 2 mph WSW | 0% |
| Thursday | 44°F | Mostly Sunny | 5 mph SSW | 13% |
| Thursday Night | 23°F | Partly Cloudy | 5 mph SSW | 13% |
| Friday | 43°F | Mostly Sunny | 5 mph SSW | 10% |
| Friday Night | 24°F | Mostly Cloudy | 2 to 8 mph SSW | 10% |
| Saturday | 47°F | Mostly Sunny | 3 mph SSW | 0% |
| Saturday Night | 26°F | Partly Cloudy | 2 to 6 mph S | 0% |
| Sunday | 52°F | Mostly Sunny | 1 to 5 mph S | 1% |
| Sunday Night | 29°F | Mostly Cloudy | 5 mph S | 1% |
| Monday | 51°F | Partly Sunny | 3 mph S | 6% |
| Monday Night | 30°F | Mostly Cloudy | 5 mph S | 6% |
Forecast source: National Weather Service (api.weather.gov) for Big Sky (45.256, -111.332). Updated through the day.
Growing snapshot for Big Sky
Growing season
50 days
Hardiness zone
4b
More local growing data for Big Sky: nearby ZIP 59716 weather · frost dates · planting calendar · Montana frost dates
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Virginia City
Climate data from the nearest NOAA station, Big Sky 2Wnw, Mt (3.2 mi from Big Sky). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.