What is today's weather forecast for Big Sky, MT?

Today's forecast for Big Sky shows a low of 15 degrees Fahrenheit. A 50 percent chance of snow, mainly before noon.

What is the 7-day weather forecast for Big Sky, MT?

The 7-day forecast for Big Sky shows highs from 27 to 37 degrees and lows from 15 to 28 degrees Fahrenheit. Expect precipitation on 7 days with chances of 20% or higher.

Will it rain in Big Sky, MT this week?

Yes, rain is possible in Big Sky this week. Precipitation chances: Wednesday (50% chance), Thursday (70% chance), Friday (90% chance), Saturday (50% chance), Sunday (50% chance), Monday (50% chance), Tuesday (50% chance).

How accurate is the Big Sky weather forecast?

WeatherForYou provides highly accurate Big Sky forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Big Sky, MT Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Warning - Winter Weather Advisory

Current Conditions From Nearby Local Station

Switch to Metric Units

34°F
Feels Like 24°F

Humidity 81% Dew Point 29°F Wind WNW 15 MPH Gusts 33 Barometer N/A

Solar Rad 183 w/m²

Report from a MADIS/MESONET weather station 0.2 mi. WNW of central Big Sky
at 11:00 AM Wed, Dec 17, 2025

Point Forecast at a Glance

WedDec 17

50%

ThuDec 18

70%

FriDec 19

90%

SatDec 20

30%

SunDec 21

50%

MonDec 22

50%

TueDec 23

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 27°F to 37°F. Unsettled weather expected with snow likely on at least 7 days.

Climate Context

This week's forecast shows temperatures running 3°F above the historical average for December. Normal highs for this period are around 31°F with lows around 14°F.

This Date in Weather History

1987 - A storm in the southwestern U.S. brought heavy rain and heavy snow to parts of California, Nevada, Arizona, Utah and New Mexico. Charleston NV was blanketed with 12 inches of snow. Lake Havasu City AZ was drenched with 2.26 inches of rain.

Big Sky, MT 7 Day Weather Forecast Details

Wednesday Dec 17

Day: A 50 percent chance of snow, mainly before noon. Patchy blowing snow before noon. Partly sunny, with a temperature falling to around 21 by 5pm. Breezy, with a west wind 20 to 22 mph, with gusts as high as 46 mph. Total daytime snow accumulation of less than a half inch possible.

Night: Mostly cloudy, with a low around 15. West wind 6 to 16 mph, with gusts as high as 41 mph.

Thursday Dec 18

Day: Snow likely, mainly after 11am. Mostly cloudy, with a high near 32. South southwest wind 6 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

Night: Snow likely. Mostly cloudy, with a low around 26. South southwest wind 11 to 13 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Friday Dec 19

Day: Snow. High near 37. South southwest wind 11 to 14 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 18. West wind 6 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 7 inches possible.

Saturday Dec 20

Day: A 30 percent chance of snow. Mostly sunny, with a high near 27. West southwest wind 6 to 10 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

Night: A slight chance of snow. Partly cloudy, with a low around 17. South wind around 7 mph, with gusts as high as 21 mph.

Sunday Dec 21

Day: A chance of snow. Partly sunny, with a high near 33.

Night: A chance of snow. Mostly cloudy, with a low around 28.

Monday Dec 22

Day: A chance of snow. Mostly cloudy, with a high near 37.

Night: A chance of snow. Mostly cloudy, with a low around 27.

Tuesday Dec 23

Day: A chance of snow. Partly sunny, with a high near 37.

About Big Sky, MT

Big Sky is an unincorporated community and census-designated place (CDP) in Gallatin and Madison counties in southwestern Montana, United States. As of the 2020 census, it had a population of 3,591, up from 2,308 in 2010. It is 45 miles (72 km) by road southwest of Bozeman. The primary industry of the area is tourism.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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