Mount Shasta (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mount Shasta.
Climate overview of Mount Shasta
Mount Shasta, California, United States of America, sees big temperature differences between seasons, with July peaking at 30°C (86°F) and December dropping to 6°C (43°F).
The city receives considerable rain/snowfall, with around 1018 mm (40 in) annually. December is the wettest month. It has a distinct dry season from June to September, with very warm summers and cold winters.
Mount Shasta Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mount Shasta - and find the best time to visit.
Monthly Temperature in Mount Shasta
Visitors to Mount Shasta can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a very warm 30°C (86°F) in July to a chilly 6°C (43°F) in the coolest month, December.
Nights vary from 12°C (54°F) in July to around -2°C (28°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mount Shasta
Mount Shasta is known for its substantial rain/snowfall, with annual precipitation reaching 1018 mm (40 in). The climate in Mount Shasta shows significant variation throughout the year. Expect heavy snow/rainfall in December, the wettest month, with an average of 195 mm (7.7 in) of precipitation over 16 snowy/rainy days.
In contrast, the driest month August offers drier and sunnier days, with around 2.3 mm (0.1 in) of rainfall over a single rainy day. For more details, please visit our Mount Shasta Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Mount Shasta
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June and September
- Warmest weather: July and August
- Fewest rainy days: July, August and September
- Wettest months: January, February, March, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from June to September, with very warm summers and cold winters
- Coldest conditions: December, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Mount Shasta
What is the best time to visit Mount Shasta?
May, June and September typically offer the most optimal weather in Mount Shasta. In contrast, January, February, March and December tend to have less optimal conditions. Mount Shasta has a distinct dry season from June to September, with very warm summers and cold winters.
What temperatures can I expect in Mount Shasta?
Daytime highs range from 6°C (43°F) in December to 30°C (86°F) in July. Nighttime lows range from -2°C (28°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Mount Shasta get?
Annual rainfall is around 1018 mm (40 in). December is the wettest month with 195 mm (7.7 in), while August is the driest with 2.3 mm (0.1 in). In the coldest months, precipitation may fall as snow/rain.
Mount Shasta 3-Day Forecast
Mount Shasta on the map
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