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Big Sky (MT) Climate by Month

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 day and night temperature

Visitors to Big Sky can expect significant temperature changes throughout the year. Typically, 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 temperatures generally dropping to -13°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

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 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.

    Forecast for Big Sky (MT)

    Tue   Dec 03
    6°C | -6°C
    NW 7 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Wed   Dec 04
    5°C | -6°C
    W 4 km/h
    clear and no rain

    clear and no rain

    Thu   Dec 05
    5°C | -6°C
    W 4 km/h
    clear and no rain

    clear and no rain