Folsom (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Folsom.
Climate overview of Folsom
Temperatures in Folsom, California, United States of America, vary greatly throughout the year. July is the hottest month at 35°C (95°F), while December is the coldest at 13°C (55°F).
With around 506 mm (20 in) of annual rainfall, the city has moderate precipitation levels. December is the wettest month and August the driest. It also has a distinct dry season from May to October, with very warm summers and mild winters. July is the sunniest month, averaging 14.7 hours of sunshine per day.
Folsom Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Folsom - and find the best time to visit.
Monthly Temperature in Folsom
The climate in Folsom is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 35°C (95°F) in July to a moderate 13°C (55°F) in the coolest month, December.
Nights vary from 16°C (61°F) in July to around 3°C (37°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Folsom
Generally, Folsom receives mid-range precipitation levels, with 506 mm (20 in) annually. The climate in Folsom shows significant variation throughout the year. Expect high rainfall in December, the wettest month, with an average of 105 mm (4.1 in) of precipitation over 11 rainy days.
In contrast, the driest month August offers drier and sunnier days, with around 0 mm (0 in) of rainfall over 0 rainy days. For more details, please visit our Folsom Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Folsom
For those who appreciate different seasons, Folsom serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 14.7 hours of sunshine daily, and embrace the darker days in December, offering only 4.7 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Folsom by Month
The relative humidity is high throughout the year in Folsom.
The city experiences its highest humidity in January, reaching 83%. In July, the humidity drops to its lowest level at 53%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Folsom
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May and October
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: June, July, August and September
- Wettest months: January, February, March, April, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from May to October, with very warm summers and mild winters
Frequently asked questions about the climate in Folsom
What is the best time to visit Folsom?
April, May and October typically offer the most optimal weather in Folsom. In contrast, July, August and December tend to have less optimal conditions. Folsom has a distinct dry season from May to October, with very warm summers and mild winters.
What temperatures can I expect in Folsom?
Daytime highs range from 13°C (55°F) in December to 35°C (95°F) in July. Nighttime lows range from 3°C (37°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Folsom get?
Annual rainfall is around 506 mm (20 in). December is the wettest month with 105 mm (4.1 in), while August is the driest with 0 mm (0 in).
How sunny is Folsom?
Folsom receives around 3,602 hours of sunshine per year. July is the sunniest month with 440 hours, while December is the cloudiest with just 141 hours. Overall, Folsom enjoys abundant sunshine.
Folsom 3-Day Forecast
Folsom on the map
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