December weather in Eureka, CA
The average temperature in Eureka in December is 47.4°F (40.0°F–54.7°F). Average precipitation: 8.10 inches.
December is a winter month in Eureka, and is cooler than the annual average of 52.6°F. Daily temperatures swing about 14.7°F between overnight low and afternoon high. Expect about 17 days with precipitation. Daylight averages about 9h 5m. For travel, December is a wet month.
Avg High
54.7°F
Avg Low
40.0°F
Precipitation
8.10 in
Daylight
9h 5m