January weather in Eureka, CA
The average temperature in Eureka in January is 47.9°F (40.8°F–55.1°F). Average precipitation: 6.67 inches.
January is a winter month in Eureka, and is cooler than the annual average of 52.6°F. Daily temperatures swing about 14.3°F between overnight low and afternoon high. Expect about 17 days with precipitation. Daylight averages about 9h 23m. For travel, January is a wet month.
Avg High
55.1°F
Avg Low
40.8°F
Precipitation
6.67 in
Daylight
9h 23m