2025 Compare Climate & Weather:
Mammoth Lakes, CA vs Mount Shasta, CA

Highlights

On average, there are 229 sunny days per year in Mount Shasta. Mammoth Lakes averages 275 sunny days per year. The US average is 205 sunny days.

Mount Shasta, California gets 40.6 inches of rain, on average, per year. Mammoth Lakes, California gets 14.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mount Shasta averages 59.3 inches of snow per year. Mammoth Lakes averages 93.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Mount Shasta, California
Summer High: the July high is around 87 degrees
Winter Low: the January low is 25.8
Rain: averages 40.6 inches of rain a year
Snow: averages 59.3 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Mount Shasta is 7.0 (10=best), which means it is one of the least comfortable places in California.

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.

Today's Weather - Mammoth Lakes, CA

37°F

Today's Weather - Mount Shasta, CA

44°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Mammoth Lakes / Mount Shasta

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.

July is the hottest month for Mount Shasta with an average high temperature of 87.0°, which ranks it as cooler than most places in California. In Mount Shasta, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mount Shasta are June, September and May.

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

December has the coldest nighttime temperatures for Mount Shasta with an average of 25.6°. This is one of the coldest places in California.

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 Mount Shasta, there are 28.2 days annually when the high temperature is over 90°, which is cooler than most places in California.

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 Mount Shasta, there are 141.3 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in California.

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.

In Mount Shasta, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in California.

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 wettest month in Mount Shasta with 7.2 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 51% of yearly precipitation and 4% occurs in Autumn, which is the driest season. The annual rainfall of 40.6 inches in Mount Shasta means that it is wetter than most places in California.

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.

December is the rainiest month in Mount Shasta with 13.1 days of rain, and August is the driest month with only 1.7 rainy days. There are 96.0 rainy days annually in Mount Shasta, which is one of the rainiest places in California. The rainiest season is Spring when it rains 39% of the time and the driest is Autumn with only a 8% chance of a rainy day.

An annual snowfall of 93.2 inches in Mammoth Lakes means that it is one of the snowiest places in California.

An annual snowfall of 59.3 inches in Mount Shasta means that it is one of the snowiest places in California.

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

December is the snowiest month in Mount Shasta with 17.1 inches of snow, and 6 months of the year have significant snowfall.