Typical Weather in Eureka, CA in December
55° F Avg High
41° F Avg Low
12 Rainy Days
☀️ Temperature Summary
Highs in December are typically around 55°F, which is cooler than usual in Eureka. You can expect overnight lows near 41°F most days. This is the coldest month of the year in Eureka.
High Temps Throughout the Year
☔ Rain Summary
You can expect about a 39% chance of rain for any given day in December. It's one of the rainier months of the year for Eureka, with total rainfall for the month around 8 inches.
Rainfall Throughout the Year
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📍 Nearby Cities in December
60°F
/
38°F
40°F
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23°F
38°F
/
23°F
46°F
/
34°F
41°F
/
29°F
39°F
/
22°F
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