Eureka, CA vs Seattle, WA

Side-by-side comparison of monthly climate normals (NOAA 1991-2020).

Eureka is about the same temperature as Seattle (52.6°F vs 53.8°F annual avg) and similar rainfall to it (40.4 in vs 36.5 in per year). Both cities share a Warm-summer Mediterranean climate (Csb).

Eureka, CA

Annual avg
52.6°F
Annual precip
40.4 in
Warmest month
August (64.0°F)
Coldest month
December (40.0°F)
Annual swing
11.1°F
Warm-summer Mediterranean Csb USDA Zone 9b

Seattle, WA

Annual avg
53.8°F
Annual precip
36.5 in
Warmest month
August (77.4°F)
Coldest month
December (36.2°F)
Annual swing
25.8°F
Pleasant months
4 / 12
Warm-summer Mediterranean Csb USDA Zone 9a

Best months to visit each city

Eureka

J
F
M
A
M
J
J
A
S
O
N
D

Seattle

J
F
M
A
M
J
J
A
S
O
N
D

Month-by-month comparison

Month Eureka Seattle
High Low Precip High Low Precip
January 55.1°F 40.8°F 6.67 in 48.6°F 36.8°F 5.21 in
February 55.4°F 41.3°F 5.64 in 50.7°F 36.8°F 3.71 in
March 56.1°F 42.4°F 5.75 in 54.8°F 39.4°F 3.94 in
April 57.4°F 44.2°F 3.64 in 59.8°F 43.6°F 2.89 in
May 59.6°F 47.7°F 1.66 in 66.5°F 49.3°F 1.98 in
June 61.9°F 50.1°F 0.70 in 71.2°F 54.0°F 1.22 in
July 63.1°F 52.4°F 0.18 in 77.3°F 57.5°F 0.56 in
August 64.0°F 53.0°F 0.18 in 77.4°F 58.1°F 0.83 in
September 63.9°F 50.5°F 0.68 in 71.7°F 53.9°F 1.37 in
October 61.9°F 46.8°F 2.31 in 61.0°F 46.4°F 3.49 in
November 57.8°F 43.2°F 4.89 in 53.0°F 39.9°F 5.80 in
December 54.7°F 40.0°F 8.10 in 47.8°F 36.2°F 5.49 in
Eureka overview
Full climate profile
 Seattle overview
Full climate profile