2025 Compare Climate & Weather:
Jackson, WY vs Mammoth Lakes, CA

Highlights

On average, there are 275 sunny days per year in Mammoth Lakes. Jackson averages 215 sunny days per year. The US average is 205 sunny days.

Mammoth Lakes, California gets 14.9 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.

Mammoth Lakes averages 93.2 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

Mammoth Lakes, California
Summer High: the July high is around 77.5 degrees
Winter Low: the January low is 13.5
Rain: averages 14.9 inches of rain a year
Snow: averages 93.2 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 Mammoth Lakes is 6.5 (10=best), which means it is one of the least comfortable places in California.

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

49°F

Today's Weather - Mammoth Lakes, CA

34°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Jackson / Mammoth Lakes

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 Mammoth Lakes with an average high temperature of 77.5°, which ranks it as cooler than most places in California. In Mammoth Lakes, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mammoth Lakes are July, August and September.

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

January has the coldest nighttime temperatures for Mammoth Lakes with an average of 13.5°. This is one of the coldest places in California.

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

In Mammoth Lakes, there are 0.1 days annually when the high temperature is over 90°, which is one of the coolest places in California.

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 Mammoth Lakes, there are 229.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in California.

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 Mammoth Lakes, there are 10.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in California.

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.


February is the wettest month in Mammoth Lakes with 2.3 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 45% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 14.9 inches in Mammoth Lakes means that it is drier than most places in California.

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.

January is the rainiest month in Mammoth Lakes with 10.0 days of rain, and June is the driest month with only 4.1 rainy days. There are 77.0 rainy days annually in Mammoth Lakes, which is rainier than most places in California. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 16% 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 93.2 inches in Mammoth Lakes means that it is one of the snowiest places in California.

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

March is the snowiest month in Mammoth Lakes with 21.1 inches of snow, and 10 months of the year have significant snowfall.