Eureka, MT vs Seattle, WA

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

Eureka is cooler than Seattle (47°F vs 53.8°F annual avg) and drier than it (15 in vs 36.5 in per year). Eureka has a Warm-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Eureka, MT

Annual avg
47°F
Annual precip
15 in
Warmest month
July (86.5°F)
Coldest month
January (19.3°F)
Annual swing
43.8°F
Warm-summer humid continental Dfb USDA Zone 7a

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 32.3°F 19.3°F 0.92 in 48.6°F 36.8°F 5.21 in
February 38.6°F 21.1°F 0.72 in 50.7°F 36.8°F 3.71 in
March 49.2°F 27.5°F 0.90 in 54.8°F 39.4°F 3.94 in
April 59.5°F 34.1°F 1.00 in 59.8°F 43.6°F 2.89 in
May 69.9°F 41.9°F 1.78 in 66.5°F 49.3°F 1.98 in
June 76.6°F 48.5°F 2.53 in 71.2°F 54.0°F 1.22 in
July 86.5°F 52.7°F 1.13 in 77.3°F 57.5°F 0.56 in
August 86.0°F 51.2°F 1.05 in 77.4°F 58.1°F 0.83 in
September 74.8°F 43.9°F 1.27 in 71.7°F 53.9°F 1.37 in
October 57.4°F 35.1°F 1.24 in 61.0°F 46.4°F 3.49 in
November 41.4°F 27.4°F 1.24 in 53.0°F 39.9°F 5.80 in
December 31.4°F 20.8°F 1.22 in 47.8°F 36.2°F 5.49 in
Eureka overview
Full climate profile
 Seattle overview
Full climate profile