The primary recreation season coincides with the spring and summer months when temperatures are in the 80s, 90s and 100s. Visitation is highest from April through September. In the spring months when school is still in session, evenings and weekends are the times of highest lake activity. Climate, Recommended Clothing Summers at Folsom Lake State Recreation Area are generally hot and dry. Dress lightly for high temperatures but be careful of over exposure to the sun.
Winters can be very cold with lengthy periods of central valley fog conditions.
Dress in layers as the damp can bring on a penetrating chill. Spring and Fall offer warm days and cooler evenings and nights. Dress in layers. Good walking shoes are a must when exploring any of the park trails. Shoes or sandals are recommended on the lake's beaches and boat ramp areas.