The Seasons

Similar to the rest of California, Richmond has a mild mediterranean climate. This means that the weather does not vary too much throughout the year. The winters are cold, and the summers hot, but there are not normally extreme temperatures in any seasons.

Winter:

• Colder than the other seasons (no surprise)
• Depending on the year, there may or may not be lots of rain. (winter 2010 had a rain for about 15 days straight)
• Still very unpredictable, scattered sunny days, some overcast, some cold

Spring:

• Lots of rain throughout the spring months (especially April)
• It tends to be more windy in the spring months
• Plants begin to pollenate, causing lots of allergies
• Weather is still unpredictable
• Begins to dry out in late May, more sunny days and the temperature begins to rise

Summer:

• Very little rain due to the Pacific High deflecting the storms and sending them northward to Oregon and Washington
• Never gets too hot, due to the proximity of the Pacific Ocean
• Much more predictable weather, usually about 70 degrees

Fall:

• Wind REALLY picks up
• Fall months are very similar to summer, little rain
• Temperatures begin to drop a lot, especially at night

Rainfall:

• Richmond averages about 25.4 inches of rain/year
• San Francisco averages about 22.3 inches of rain/year
• San Rafael averages about 34.3 inches of rain/year
• Vallejo averages about 19.6 inches of rain/year

Source for rainfall info:

http://www.idcide.com/weather/ca/richmond.htm