New London, CT vs Seattle, WA

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

New London is cooler than Seattle (51.4°F vs 53.8°F annual avg) and similar rainfall to it (39.3 in vs 36.5 in per year). New London has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

New London, CT

Annual avg
51.4°F
Annual precip
39.3 in
Warmest month
July (79.8°F)
Coldest month
January (23.3°F)
Annual swing
41.5°F
Pleasant months
4 / 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

New London

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 New London Seattle
High Low Precip High Low Precip
January 38.3°F 23.3°F 2.68 in 48.6°F 36.8°F 5.21 in
February 40.2°F 24.6°F 2.20 in 50.7°F 36.8°F 3.71 in
March 46.6°F 30.7°F 3.82 in 54.8°F 39.4°F 3.94 in
April 56.2°F 39.1°F 3.58 in 59.8°F 43.6°F 2.89 in
May 64.8°F 48.8°F 3.31 in 66.5°F 49.3°F 1.98 in
June 73.8°F 58.2°F 3.30 in 71.2°F 54.0°F 1.22 in
July 79.8°F 64.8°F 3.24 in 77.3°F 57.5°F 0.56 in
August 79.2°F 63.8°F 3.32 in 77.4°F 58.1°F 0.83 in
September 73.5°F 56.9°F 3.83 in 71.7°F 53.9°F 1.37 in
October 63.2°F 45.6°F 3.66 in 61.0°F 46.4°F 3.49 in
November 53.3°F 36.8°F 3.24 in 53.0°F 39.9°F 5.80 in
December 43.9°F 29.0°F 3.13 in 47.8°F 36.2°F 5.49 in
New London overview
Full climate profile
Seattle overview
Full climate profile