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Eureka, CA Climate
1991 to 2020 normals at Eureka WFO Woodley Island, 1.6 mi from the center of Eureka, elevation 20 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 55° | 41° | 6.67 in | 0.0 in | |
| February | 55° | 41° | 5.64 in | 0.0 in | |
| March | 56° | 42° | 5.75 in | 0.0 in | |
| April | 57° | 44° | 3.64 in | 0.0 in | |
| May | 60° | 48° | 1.66 in | 0.0 in | |
| June | 62° | 50° | 0.70 in | 0.0 in | |
| July | 63° | 52° | 0.18 in | 0.0 in | |
| August | 64° | 53° | 0.18 in | 0.0 in | |
| September | 64° | 51° | 0.68 in | 0.0 in | |
| October | 62° | 47° | 2.31 in | 0.0 in | |
| November | 58° | 43° | 4.89 in | 0.0 in | |
| December | 55° | 40° | 8.10 in | 0.0 in | |
| Year | 59° | 40.40 in | 0.0 in |
Frequently asked questions
- What is the hottest month in Eureka, CA?
- August is the warmest month, with a normal high of 64°F at Eureka WFO Woodley Island.
- What is the coldest month in Eureka, CA?
- December is the coldest month, with a normal low of 40°F.
- What is the wettest month in Eureka, CA?
- December has the most precipitation on average, about 8.10 inches.