Mount Vernon, SD vs Seattle, WA

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

Mount Vernon is cooler than Seattle (47.7°F vs 53.8°F annual avg) and drier than it (21.1 in vs 36.5 in per year). Mount Vernon has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Mount Vernon, SD

Annual avg
47.7°F
Annual precip
21.1 in
Warmest month
July (86.7°F)
Coldest month
January (9.3°F)
Annual swing
56.3°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa USDA Zone 6a

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

Mount Vernon

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 Mount Vernon Seattle
High Low Precip High Low Precip
January 28.6°F 9.3°F 0.40 in 48.6°F 36.8°F 5.21 in
February 32.7°F 13.4°F 0.37 in 50.7°F 36.8°F 3.71 in
March 45.4°F 24.3°F 0.93 in 54.8°F 39.4°F 3.94 in
April 58.7°F 35.1°F 2.07 in 59.8°F 43.6°F 2.89 in
May 70.8°F 47.8°F 3.15 in 66.5°F 49.3°F 1.98 in
June 81.2°F 58.5°F 3.51 in 71.2°F 54.0°F 1.22 in
July 86.7°F 63.9°F 2.36 in 77.3°F 57.5°F 0.56 in
August 83.9°F 60.5°F 3.14 in 77.4°F 58.1°F 0.83 in
September 76.8°F 51.0°F 2.34 in 71.7°F 53.9°F 1.37 in
October 61.7°F 37.8°F 1.83 in 61.0°F 46.4°F 3.49 in
November 45.6°F 24.2°F 0.55 in 53.0°F 39.9°F 5.80 in
December 31.9°F 14.1°F 0.49 in 47.8°F 36.2°F 5.49 in
Mount Vernon overview
Full climate profile
 Seattle overview
Full climate profile