Mariposa County Climate
Mariposa County, California
Avg Annual Temp
50.6°F
Annual Precip
33.6"
Annual Snowfall
0.0"
Extreme Heat Days
16.099999999999998
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Mariposa County Weather
A cool gateway to the mountains
Mariposa County's annual average temperature of 50.6°F is below the national median. This reflects its rugged, high-elevation terrain that stays cooler than the surrounding lowlands.
Significantly cooler than the state
Averaging 50.6°F, Mariposa is roughly eight degrees cooler than the California state average of 58.7°F. It serves as a refreshing mountain alternative to the hot Central Valley.
Abundant rain in the foothills
The county receives 33.6 inches of precipitation, which is well above the California average of 25.8 inches. Despite the cool temperatures, the data shows 0.0 inches of annual snowfall in the main populated areas.
Mild summers and crisp winters
Mariposa sees only 16 days of extreme heat per year, with July temperatures averaging a pleasant 68.7°F. Winters are cold but manageable, with a seasonal average of 37.1°F.
Prepare for wet winter months
With 33.6 inches of rain and no snow, residents should focus on flood prevention and rain gear. The mild summer climate makes this one of the few California counties where air conditioning is rarely a daily necessity.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.