American Canyon, CA vs Seattle, WA

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

American Canyon is warmer than Seattle (57.7°F vs 53.8°F annual avg) and drier than it (20.2 in vs 36.5 in per year). Both cities share a Warm-summer Mediterranean climate (Csb).

American Canyon, CA

Annual avg
57.7°F
Annual precip
20.2 in
Warmest month
September (80.3°F)
Coldest month
December (37.6°F)
Annual swing
19.7°F
Pleasant months
3 / 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

American Canyon

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 American Canyon Seattle
High Low Precip High Low Precip
January 56.9°F 38.2°F 4.17 in 48.6°F 36.8°F 5.21 in
February 60.9°F 40.0°F 3.95 in 50.7°F 36.8°F 3.71 in
March 64.2°F 41.7°F 3.01 in 54.8°F 39.4°F 3.94 in
April 68.1°F 43.5°F 1.26 in 59.8°F 43.6°F 2.89 in
May 73.1°F 47.8°F 0.80 in 66.5°F 49.3°F 1.98 in
June 78.3°F 51.8°F 0.22 in 71.2°F 54.0°F 1.22 in
July 78.7°F 54.8°F 0.01 in 77.3°F 57.5°F 0.56 in
August 80.0°F 54.4°F 0.02 in 77.4°F 58.1°F 0.83 in
September 80.3°F 51.0°F 0.07 in 71.7°F 53.9°F 1.37 in
October 75.4°F 45.9°F 0.93 in 61.0°F 46.4°F 3.49 in
November 65.1°F 40.4°F 1.97 in 53.0°F 39.9°F 5.80 in
December 57.3°F 37.6°F 3.82 in 47.8°F 36.2°F 5.49 in
American Canyon overview
Full climate profile
 Seattle overview
Full climate profile