Portland, IN vs Seattle, WA

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

Portland is cooler than Seattle (50.3°F vs 53.8°F annual avg) and similar rainfall to it (39.9 in vs 36.5 in per year). Portland has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Portland, IN

Annual avg
50.3°F
Annual precip
39.9 in
Warmest month
July (83.7°F)
Coldest month
January (17.0°F)
Annual swing
47.4°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa 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

Portland

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 Portland Seattle
High Low Precip High Low Precip
January 33.8°F 17.0°F 2.82 in 48.6°F 36.8°F 5.21 in
February 37.6°F 19.0°F 2.71 in 50.7°F 36.8°F 3.71 in
March 48.2°F 27.7°F 2.80 in 54.8°F 39.4°F 3.94 in
April 61.6°F 37.8°F 3.62 in 59.8°F 43.6°F 2.89 in
May 71.7°F 49.2°F 4.31 in 66.5°F 49.3°F 1.98 in
June 80.4°F 58.7°F 4.55 in 71.2°F 54.0°F 1.22 in
July 83.7°F 61.9°F 4.07 in 77.3°F 57.5°F 0.56 in
August 81.9°F 59.6°F 3.83 in 77.4°F 58.1°F 0.83 in
September 76.5°F 52.3°F 2.97 in 71.7°F 53.9°F 1.37 in
October 64.3°F 41.1°F 2.85 in 61.0°F 46.4°F 3.49 in
November 50.5°F 31.1°F 3.01 in 53.0°F 39.9°F 5.80 in
December 38.9°F 22.9°F 2.39 in 47.8°F 36.2°F 5.49 in
Portland overview
Full climate profile
 Seattle overview
Full climate profile