2025 Compare Climate & Weather:
Jackson, WY vs Big Sky, MT

Highlights

On average, there are 187 sunny days per year in Big Sky. Jackson averages 215 sunny days per year. The US average is 205 sunny days.

Big Sky, Montana gets 20.2 inches of rain, on average, per year. Jackson, Wyoming gets 20 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Big Sky averages 46.1 inches of snow per year. Jackson averages 109 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Big Sky, Montana
Summer High: the July high is around 77.9 degrees
Winter Low: the January low is 7.6
Rain: averages 20.2 inches of rain a year
Snow: averages 46.1 inches of snow a year

Jackson, Wyoming
Summer High: the July high is around 80.8 degrees
Winter Low: the January low is 2.5
Rain: averages 20 inches of rain a year
Snow: averages 109 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Big Sky is 6.0 (10=best), which means it is one of the least comfortable places in Montana.

The annual BestPlaces Comfort Index for Jackson is 5.7 (10=best), which means it is one of the least comfortable places in Wyoming.

Today's Weather - Jackson, WY

55°F

Today's Weather - Big Sky, MT

50°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Jackson / Big Sky

July is the hottest month for Jackson with an average high temperature of 80.8°, which ranks it as cooler than most places in Wyoming. In Jackson, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jackson are August, July and June.

July is the hottest month for Big Sky with an average high temperature of 77.9°, which ranks it as one of the coolest places in Montana. In Big Sky, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Big Sky are July, August and June.

January has the coldest nighttime temperatures for Jackson with an average of 2.5°. This is one of the coldest places in Wyoming.

December has the coldest nighttime temperatures for Big Sky with an average of 6.5°. This is colder than most places in Montana.

In Jackson, there are 3.5 days annually when the high temperature is over 90°, which is cooler than most places in Wyoming.

In Big Sky, there are 1.6 days annually when the high temperature is over 90°, which is one of the coolest places in Montana.

In Jackson, there are 235.3 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Wyoming.

In Big Sky, there are 253.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Montana.

In Jackson, there are 41.9 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Wyoming.

In Big Sky, there are 28.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Montana.

December is the wettest month in Jackson with 2.3 inches of rain, and the driest month is July with 1.3 inches. The wettest season is Spring with 30% of yearly precipitation and 21% occurs in Autumn, which is the driest season. The annual rainfall of 20.0 inches in Jackson means that it is one of the wettest places in Wyoming.


June is the wettest month in Big Sky with 2.7 inches of rain, and the driest month is February with 1.0 inches. The wettest season is Autumn with 29% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 20.2 inches in Big Sky means that it is wetter than most places in Montana.

December is the rainiest month in Jackson with 12.5 days of rain, and September is the driest month with only 7.6 rainy days. There are 113.3 rainy days annually in Jackson, which is one of the rainiest places in Wyoming. The rainiest season is Spring when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

May is the rainiest month in Big Sky with 12.7 days of rain, and October is the driest month with only 7.8 rainy days. There are 123.6 rainy days annually in Big Sky, which is one of the rainiest places in Montana. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 109.0 inches in Jackson means that it is one of the snowiest places in Wyoming.

An annual snowfall of 46.1 inches in Big Sky means that it is snowier than most places in Montana.

December is the snowiest month in Jackson with 26.2 inches of snow, and 9 months of the year have significant snowfall.

January is the snowiest month in Big Sky with 8.6 inches of snow, and 8 months of the year have significant snowfall.