Happy Valley, OR vs Seattle, WA

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

Happy Valley is about the same temperature as Seattle (55.4°F vs 53.8°F annual avg) and wetter than it (44.8 in vs 36.5 in per year). Both cities share a Warm-summer Mediterranean climate (Csb).

Happy Valley, OR

Annual avg
55.4°F
Annual precip
44.8 in
Warmest month
August (84.1°F)
Coldest month
December (36.3°F)
Annual swing
29°F
Pleasant months
2 / 12
Warm-summer Mediterranean Csb USDA Zone 9a

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

Happy Valley

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 Happy Valley Seattle
High Low Precip High Low Precip
January 48.3°F 36.7°F 6.54 in 48.6°F 36.8°F 5.21 in
February 52.5°F 37.5°F 4.46 in 50.7°F 36.8°F 3.71 in
March 58.0°F 39.8°F 4.78 in 54.8°F 39.4°F 3.94 in
April 63.5°F 43.3°F 3.84 in 59.8°F 43.6°F 2.89 in
May 70.9°F 48.4°F 2.54 in 66.5°F 49.3°F 1.98 in
June 76.2°F 52.9°F 1.79 in 71.2°F 54.0°F 1.22 in
July 83.9°F 57.0°F 0.50 in 77.3°F 57.5°F 0.56 in
August 84.1°F 57.5°F 0.56 in 77.4°F 58.1°F 0.83 in
September 77.9°F 52.9°F 1.64 in 71.7°F 53.9°F 1.37 in
October 64.9°F 46.5°F 4.23 in 61.0°F 46.4°F 3.49 in
November 53.4°F 40.5°F 6.73 in 53.0°F 39.9°F 5.80 in
December 47.3°F 36.3°F 7.20 in 47.8°F 36.2°F 5.49 in
Happy Valley overview
Full climate profile
 Seattle overview
Full climate profile