Forest Grove, OR vs Seattle, WA

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

Forest Grove is about the same temperature as Seattle (52.1°F vs 53.8°F annual avg) and wetter than it (46.7 in vs 36.5 in per year). Both cities share a Warm-summer Mediterranean climate (Csb).

Forest Grove, OR

Annual avg
52.1°F
Annual precip
46.7 in
Warmest month
August (82.2°F)
Coldest month
January (32.6°F)
Annual swing
29.5°F
Warm-summer Mediterranean Csb USDA Zone 8b

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

Forest Grove

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 Forest Grove Seattle
High Low Precip High Low Precip
January 45.0°F 32.6°F 7.19 in 48.6°F 36.8°F 5.21 in
February 49.4°F 33.1°F 5.76 in 50.7°F 36.8°F 3.71 in
March 54.6°F 35.9°F 5.03 in 54.8°F 39.4°F 3.94 in
April 60.1°F 39.2°F 3.33 in 59.8°F 43.6°F 2.89 in
May 68.1°F 45.3°F 2.19 in 66.5°F 49.3°F 1.98 in
June 73.1°F 49.7°F 1.40 in 71.2°F 54.0°F 1.22 in
July 81.4°F 53.8°F 0.32 in 77.3°F 57.5°F 0.56 in
August 82.2°F 53.5°F 0.51 in 77.4°F 58.1°F 0.83 in
September 76.1°F 48.7°F 1.34 in 71.7°F 53.9°F 1.37 in
October 63.3°F 41.6°F 3.70 in 61.0°F 46.4°F 3.49 in
November 50.9°F 36.3°F 7.23 in 53.0°F 39.9°F 5.80 in
December 44.0°F 32.8°F 8.72 in 47.8°F 36.2°F 5.49 in
Forest Grove overview
Full climate profile
 Seattle overview
Full climate profile