Portland, ND vs Seattle, WA

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

Portland is cooler than Seattle (39.4°F vs 53.8°F annual avg) and drier than it (23.9 in vs 36.5 in per year). Portland has a Warm-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Portland, ND

Annual avg
39.4°F
Annual precip
23.9 in
Warmest month
July (80.1°F)
Coldest month
January (-3.7°F)
Annual swing
62.2°F
Pleasant months
2 / 12
Warm-summer humid continental Dfb USDA Zone 5a

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 16.1°F -3.7°F 0.54 in 48.6°F 36.8°F 5.21 in
February 21.0°F -0.5°F 0.53 in 50.7°F 36.8°F 3.71 in
March 33.4°F 13.0°F 0.96 in 54.8°F 39.4°F 3.94 in
April 51.3°F 28.0°F 1.50 in 59.8°F 43.6°F 2.89 in
May 66.6°F 40.6°F 3.29 in 66.5°F 49.3°F 1.98 in
June 76.2°F 53.2°F 4.11 in 71.2°F 54.0°F 1.22 in
July 80.1°F 56.6°F 3.88 in 77.3°F 57.5°F 0.56 in
August 79.2°F 53.9°F 2.66 in 77.4°F 58.1°F 0.83 in
September 70.1°F 44.2°F 2.68 in 71.7°F 53.9°F 1.37 in
October 54.4°F 31.7°F 2.11 in 61.0°F 46.4°F 3.49 in
November 36.3°F 17.3°F 0.79 in 53.0°F 39.9°F 5.80 in
December 22.3°F 4.5°F 0.85 in 47.8°F 36.2°F 5.49 in
Portland overview
Full climate profile
 Seattle overview
Full climate profile