Janesville, WI vs Seattle, WA

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

Janesville is cooler than Seattle (47.8°F vs 53.8°F annual avg) and similar rainfall to it (37.4 in vs 36.5 in per year). Janesville has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Janesville, WI

Annual avg
47.8°F
Annual precip
37.4 in
Warmest month
July (83.4°F)
Coldest month
January (11.6°F)
Annual swing
52.7°F
Pleasant months
2 / 12
Hot-summer humid continental Dfa 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

Janesville

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 Janesville Seattle
High Low Precip High Low Precip
January 28.3°F 11.6°F 1.63 in 48.6°F 36.8°F 5.21 in
February 32.4°F 14.7°F 1.61 in 50.7°F 36.8°F 3.71 in
March 44.6°F 25.4°F 2.06 in 54.8°F 39.4°F 3.94 in
April 57.9°F 36.1°F 3.57 in 59.8°F 43.6°F 2.89 in
May 69.9°F 48.0°F 4.09 in 66.5°F 49.3°F 1.98 in
June 79.9°F 58.0°F 4.99 in 71.2°F 54.0°F 1.22 in
July 83.4°F 61.7°F 4.19 in 77.3°F 57.5°F 0.56 in
August 81.7°F 59.5°F 4.34 in 77.4°F 58.1°F 0.83 in
September 75.1°F 51.0°F 3.73 in 71.7°F 53.9°F 1.37 in
October 61.7°F 39.5°F 2.99 in 61.0°F 46.4°F 3.49 in
November 46.3°F 28.5°F 2.33 in 53.0°F 39.9°F 5.80 in
December 33.5°F 18.1°F 1.90 in 47.8°F 36.2°F 5.49 in
Janesville overview
Full climate profile
 Seattle overview
Full climate profile