Placer County Climate
Placer County, California
Avg Annual Temp
54.1°F
Annual Precip
48.0"
Annual Snowfall
62.9"
Extreme Heat Days
32.575
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Placer County Weather
A High-Precipitation Hub
Placer County’s average temperature of 54.1°F aligns with the national median. However, its 48.0 inches of annual precipitation makes it much wetter than most of the United States.
California's Wet Northern Interior
Placer receives nearly double the state's average rainfall of 25.8 inches. While its 54.1°F average is cooler than the state mean, it bridges the gap between the hot valley and cold peaks.
Wetter Than Neighbors
Placer is significantly wetter than Plumas County (36.1 inches) and Nevada County (40.4 inches). It serves as a major watershed for the region due to this high annual precipitation.
Snow and Heat in Equal Measure
The county faces 62.9 inches of annual snow in the mountains, yet sees 33 days of extreme heat in the lower elevations. This diversity creates a 69.2°F summer and 40.9°F winter average.
Dual-Season Home Preparation
Homeowners must prepare for both heavy mountain snow and valley heatwaves reaching over 90°F. Reliable drainage systems are critical to manage the 48.0 inches of annual rainfall.
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.