Biddeford, ME vs Seattle, WA

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

Biddeford is cooler than Seattle (45.3°F vs 53.8°F annual avg) and wetter than it (52 in vs 36.5 in per year). Biddeford has a Warm-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Biddeford, ME

Annual avg
45.3°F
Annual precip
52 in
Warmest month
July (76.9°F)
Coldest month
January (13.1°F)
Annual swing
44.4°F
Pleasant months
3 / 12
Warm-summer humid continental Dfb USDA Zone 6b

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

Biddeford

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 Biddeford Seattle
High Low Precip High Low Precip
January 32.7°F 13.1°F 3.65 in 48.6°F 36.8°F 5.21 in
February 34.9°F 14.4°F 3.71 in 50.7°F 36.8°F 3.71 in
March 41.2°F 22.7°F 4.68 in 54.8°F 39.4°F 3.94 in
April 52.0°F 32.3°F 4.73 in 59.8°F 43.6°F 2.89 in
May 61.6°F 42.7°F 4.21 in 66.5°F 49.3°F 1.98 in
June 70.8°F 52.3°F 4.69 in 71.2°F 54.0°F 1.22 in
July 76.9°F 57.8°F 3.90 in 77.3°F 57.5°F 0.56 in
August 76.0°F 56.5°F 3.88 in 77.4°F 58.1°F 0.83 in
September 69.3°F 48.9°F 3.93 in 71.7°F 53.9°F 1.37 in
October 58.6°F 37.5°F 5.63 in 61.0°F 46.4°F 3.49 in
November 48.3°F 29.2°F 4.17 in 53.0°F 39.9°F 5.80 in
December 38.8°F 20.0°F 4.82 in 47.8°F 36.2°F 5.49 in
Biddeford overview
Full climate profile
 Seattle overview
Full climate profile