Folsom (CA) Weather & Climate: Best Time to Visit

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, January.

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

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

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

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