Spring (March–May): Average 47–52°F, cool and rainy, especially in March. Common activities: Hiking (bring rain gear), enjoying coastal scenery. Suggested clothing: Waterproof jacket, warm clothing, long pants.
Summer (June–August): Average 55–60°F, mild and dry. Common activities: Camping, beach activities, exploring Redwood National Park. Suggested clothing: Light and breathable clothing, comfortable shoes.
Autumn (September–November): Average 54–58°F, comfortable, rainfall gradually increases, especially in November. Common activities: Enjoying autumn scenery, outdoor walks. Suggested clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 46–49°F, cold and humid, heavy rainfall, especially in December. Common activities: Indoor activities, museum visits. Suggested clothing: Thick jacket, warm clothing, waterproof boots.
Weather in Eureka
Annual average temperature: approx. 52.7°F / Annual rainfall: approx. 1087 mm / Summer humidity: 70%–80% / Rainiest month: December
Eureka weather by month
Month
Air temperature (°F)
Precipitation (mm)
January
49.1°F
183
February
46.8°F
128
March
47.7°F
154
April
49.3°F
71.3
May
52.9°F
57
June
55.9°F
21.7
July
58.6°F
7
August
60.1°F
13.5
September
58.3°F
20
October
54.7°F
39.7
November
49.5°F
170
December
49.1°F
222
7-day weather forecast for Eureka
10/27
Tuesday
Sunny
55.7°F/45°F
10/28
Wednesday
Sunny
55.9°F/44.1°F
10/29
Thursday
Overcast
55.1°F/43.9°F
10/30
Friday
Overcast
54.9°F/45.5°F
10/31
Saturday
Overcast
55.4°F/42.8°F
11/1
Sunday
Sunny
55.2°F/40.8°F
11/2
Monday
Overcast
57.4°F/43.4°F
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