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Big Sky
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Big Sky (MT) Weather and Climate: A Comprehensive Guide

The temperature in Big Sky can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and very cold during the cooler months. It maintains moderate precipitation patterns. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

Visitors to Big Sky can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 24°C in July to a very cold -3°C in the coolest month, December.

Nights are cooler, with lows often dropping to around -13°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Big Sky experiences moderate precipitation patterns, averaging 716 mm yearly. Big Sky offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between May (92 mm) and July (45 mm) is not too significant, making the climate enjoyable for visitors and residents alike.

The mean monthly precipitation over the year, including rain, hail and snow

The average number of days each month with precipitation

Forecast for Big Sky (MT)

Sun   Jan 05
-4°C | -13°C
NW 2 m/s
11 mm
overcast and snow

overcast and snow

hourly forecast
Mon   Jan 06
-5°C | -12°C
N 2 m/s
11 mm
broken clouds and snow

broken clouds and snow

hourly forecast
Tue   Jan 07
-6°C | -14°C
N 1 m/s
2.2 mm
partly cloudy and chance of slight snow

partly cloudy and chance of slight snow

hourly forecast
5-Day Forecast 10-Day Forecast

Select a Month of Interest

Check the weather conditions for any month in Big Sky.

The best time of year to visit Big Sky in the United States of America

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is winter in Big Sky?
    The coldest season / winter is in the following months: January, February, November and December.
  • Which is the warmest month in Big Sky?
    July has an average maximum temperature of 24°C and is the warmest month of the year.
  • Which is the coldest month in Big Sky?
    The coldest month is December with an average maximum temperature of -3°C.
  • Which is the wettest month in Big Sky?
    May tops the wettest month list with 92 mm of rainfall.
  • Which is the driest month in Big Sky?
    July is the driest month with 45 mm of precipitation.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     


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