Los Angeles County Climate
Los Angeles County, California
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
63.7°F
Annual Precip
16.1"
Annual Snowfall
0.1"
Extreme Heat Days
51
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
10b
Minimum winter temperature range for plant survival
5,215
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Los Angeles County
Climate Verdict
Los Angeles County has a warm, averaging 63.7°F year-round, semi-arid conditions with only 16.1 inches of annual precipitation, occasional hot days — 50.66923076923076 per year above 90°F, light snow averaging 0.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 54.3°F. summers are warm — July averages 74.8°F. The climate is remarkably stable year-round, with only a 20°F difference between January and July. December is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Los Angeles County is 5.1°F warmer than the California statewide average of 58.7°F, it is also noticeably drier, receiving 9.7 inches less precipitation than the state average.
Climate Profile
About Los Angeles County Weather
A perennially warm coastal giant
Los Angeles County's annual average of 63.7°F is significantly warmer than the national median. This consistent warmth attracts millions, though it remains drier than many eastern coastal regions.
Leading the state in warmth
At 63.7°F, Los Angeles sits five degrees above the California state average of 58.7°F. It is one of the state's warmer counties, driven by its southern latitude and diverse topography.
Drier than the California average
The county receives just 16.1 inches of rain annually, nearly 10 inches less than the California average of 25.8 inches. This semi-arid climate is even more pronounced when compared to the wetter northern coast.
Fifty-one days of intense sun
Summer temperatures average 73.4°F, but residents face 51 days of extreme heat exceeding 90°F annually. Winters are exceptionally mild, with a January average of 54.3°F and virtually no snow at 0.1 inches.
Prioritize efficient cooling and water
With 51 extreme heat days, high-efficiency HVAC systems are a standard requirement for comfort. Low-water landscaping is also a smart move given the county's low 16.1-inch annual rainfall.
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.