Average percent of sunshine in Foster City (CA)
The mean percent of sunhours during the day in Foster City (California), the United States of America.
- The sun shines on average 78.0% in April making it the most sunny month.
- On average, December has the lowest percentage of sunshine with 54.0%.
Weather Forecasts for Foster City (CA)
clear and no rain
broken clouds and rain
almost clear and no rain