Coatesville, PA vs Seattle, WA

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

Coatesville is about the same temperature as Seattle (52.8°F vs 53.8°F annual avg) and wetter than it (52.1 in vs 36.5 in per year). Coatesville has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Coatesville, PA

Annual avg
52.8°F
Annual precip
52.1 in
Warmest month
July (85.4°F)
Coldest month
January (21.9°F)
Annual swing
44.8°F
Pleasant months
2 / 12
Hot-summer humid continental Dfa USDA Zone 7b

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

Coatesville

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 Coatesville Seattle
High Low Precip High Low Precip
January 38.5°F 21.9°F 4.05 in 48.6°F 36.8°F 5.21 in
February 41.5°F 23.2°F 3.34 in 50.7°F 36.8°F 3.71 in
March 50.3°F 30.5°F 4.80 in 54.8°F 39.4°F 3.94 in
April 62.7°F 40.1°F 4.10 in 59.8°F 43.6°F 2.89 in
May 72.8°F 50.3°F 4.02 in 66.5°F 49.3°F 1.98 in
June 80.8°F 59.0°F 4.54 in 71.2°F 54.0°F 1.22 in
July 85.4°F 64.6°F 4.55 in 77.3°F 57.5°F 0.56 in
August 83.4°F 62.8°F 4.58 in 77.4°F 58.1°F 0.83 in
September 76.5°F 55.7°F 5.17 in 71.7°F 53.9°F 1.37 in
October 64.9°F 43.6°F 4.57 in 61.0°F 46.4°F 3.49 in
November 53.6°F 34.0°F 3.61 in 53.0°F 39.9°F 5.80 in
December 43.1°F 26.9°F 4.79 in 47.8°F 36.2°F 5.49 in
Coatesville overview
Full climate profile
 Seattle overview
Full climate profile