Marlborough, MA vs Seattle, WA

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

Marlborough is cooler than Seattle (49.9°F vs 53.8°F annual avg) and wetter than it (49.7 in vs 36.5 in per year). Marlborough has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Marlborough, MA

Annual avg
49.9°F
Annual precip
49.7 in
Warmest month
July (86.9°F)
Coldest month
January (14.6°F)
Annual swing
47.5°F
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

Marlborough

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 Marlborough Seattle
High Low Precip High Low Precip
January 37.4°F 14.6°F 3.58 in 48.6°F 36.8°F 5.21 in
February 40.6°F 15.9°F 3.30 in 50.7°F 36.8°F 3.71 in
March 48.5°F 23.8°F 4.59 in 54.8°F 39.4°F 3.94 in
April 61.6°F 33.8°F 4.36 in 59.8°F 43.6°F 2.89 in
May 73.0°F 45.3°F 3.67 in 66.5°F 49.3°F 1.98 in
June 81.1°F 54.6°F 4.16 in 71.2°F 54.0°F 1.22 in
July 86.9°F 60.2°F 4.04 in 77.3°F 57.5°F 0.56 in
August 84.9°F 58.0°F 4.43 in 77.4°F 58.1°F 0.83 in
September 77.5°F 49.4°F 3.89 in 71.7°F 53.9°F 1.37 in
October 65.5°F 38.0°F 5.07 in 61.0°F 46.4°F 3.49 in
November 53.6°F 28.7°F 3.76 in 53.0°F 39.9°F 5.80 in
December 42.8°F 20.6°F 4.85 in 47.8°F 36.2°F 5.49 in
Marlborough overview
Full climate profile
 Seattle overview
Full climate profile