Mariposa County Climate
Mariposa County, California
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.6°F
Annual Precip
33.6"
Annual Snowfall
0.0"
Extreme Heat Days
16
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
2,320
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Mariposa County
Climate Verdict
Mariposa County has a mild, with an average annual temperature of 50.6°F, moderate rainfall of 33.6 inches per year, rare extreme heat with only 16.099999999999998 days above 90°F annually, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 37.2°F. summers are pleasantly cool with July averaging 68.7°F. The 32°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Mariposa County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Mariposa County is 8.1°F cooler than the California statewide average of 58.7°F, it is also noticeably wetter, receiving 7.8 inches more precipitation than the state average, the county experiences 42.57092496293387 fewer extreme heat days than the state average.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.