Lake St. Louis, MO vs Seattle, WA

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

Lake St. Louis is about the same temperature as Seattle (55.2°F vs 53.8°F annual avg) and wetter than it (44.4 in vs 36.5 in per year). Lake St. Louis has a Hot-summer humid continental climate; Seattle a Warm-summer Mediterranean climate.

Lake St. Louis, MO

Annual avg
55.2°F
Annual precip
44.4 in
Warmest month
July (87.5°F)
Coldest month
January (21.2°F)
Annual swing
47.1°F
Pleasant months
2 / 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

Lake St. Louis

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 Lake St. Louis Seattle
High Low Precip High Low Precip
January 39.3°F 21.2°F 2.61 in 48.6°F 36.8°F 5.21 in
February 44.8°F 24.4°F 2.43 in 50.7°F 36.8°F 3.71 in
March 55.2°F 33.3°F 3.74 in 54.8°F 39.4°F 3.94 in
April 67.0°F 43.8°F 4.70 in 59.8°F 43.6°F 2.89 in
May 75.7°F 54.2°F 5.09 in 66.5°F 49.3°F 1.98 in
June 83.7°F 63.3°F 4.72 in 71.2°F 54.0°F 1.22 in
July 87.5°F 67.3°F 3.92 in 77.3°F 57.5°F 0.56 in
August 86.7°F 65.4°F 3.58 in 77.4°F 58.1°F 0.83 in
September 79.8°F 57.0°F 3.50 in 71.7°F 53.9°F 1.37 in
October 68.3°F 45.6°F 3.37 in 61.0°F 46.4°F 3.49 in
November 55.4°F 34.9°F 3.69 in 53.0°F 39.9°F 5.80 in
December 44.0°F 25.9°F 3.07 in 47.8°F 36.2°F 5.49 in
Lake St. Louis overview
Full climate profile
 Seattle overview
Full climate profile