Rosemont, IL vs Seattle, WA

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

Rosemont is cooler than Seattle (51.3°F vs 53.8°F annual avg) and similar rainfall to it (37.9 in vs 36.5 in per year). Rosemont has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Rosemont, IL

Annual avg
51.3°F
Annual precip
37.9 in
Warmest month
July (84.5°F)
Coldest month
January (18.8°F)
Annual swing
50.2°F
Pleasant months
2 / 12
Hot-summer humid continental Dfa USDA Zone 7a

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

Rosemont

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 Rosemont Seattle
High Low Precip High Low Precip
January 31.6°F 18.8°F 1.99 in 48.6°F 36.8°F 5.21 in
February 35.7°F 21.8°F 1.97 in 50.7°F 36.8°F 3.71 in
March 47.0°F 31.0°F 2.45 in 54.8°F 39.4°F 3.94 in
April 59.0°F 40.3°F 3.75 in 59.8°F 43.6°F 2.89 in
May 70.5°F 50.6°F 4.49 in 66.5°F 49.3°F 1.98 in
June 80.4°F 60.8°F 4.10 in 71.2°F 54.0°F 1.22 in
July 84.5°F 66.4°F 3.71 in 77.3°F 57.5°F 0.56 in
August 82.5°F 65.1°F 4.25 in 77.4°F 58.1°F 0.83 in
September 75.5°F 57.1°F 3.19 in 71.7°F 53.9°F 1.37 in
October 62.7°F 45.4°F 3.43 in 61.0°F 46.4°F 3.49 in
November 48.4°F 34.1°F 2.42 in 53.0°F 39.9°F 5.80 in
December 36.6°F 24.4°F 2.11 in 47.8°F 36.2°F 5.49 in
Rosemont overview
Full climate profile
 Seattle overview
Full climate profile