Plumas County Climate
Plumas County, California
Avg Annual Temp
48.4°F
Annual Precip
36.1"
Annual Snowfall
64.5"
Extreme Heat Days
28.475
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Plumas County Weather
Cold and Snowy Mountains
Plumas County’s 48.4°F annual average is below the national median. It experiences a mountain climate characterized by high precipitation and distinct seasonal shifts.
Cooler and Wetter Than Average
The county sits 10 degrees below the California average temperature of 58.7°F. Its 36.1 inches of annual precipitation is well above the 25.8-inch state average, often falling as heavy snow.
Similar Temperature, More Rain
Plumas shares an identical 48.4°F average with Modoc County but is more than twice as wet. This extra moisture supports denser forests and more significant winter snowpack.
Winter Snow and Summer Sun
Plumas sees 64.5 inches of annual snow and a January average of 32.8°F. Despite the cold winters, the county still endures 28 days of extreme heat over 90°F in the summer months.
Winter and Wildfire Readiness
Snow removal tools are essential for the 64.5 inches of winter snowfall. Residents should also plan for dry, hot summers that bring nearly a month of extreme heat and increased fire risk.
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.