Iron Mountain Lake, MO vs Seattle, WA

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

Iron Mountain Lake is warmer than Seattle (56.1°F vs 53.8°F annual avg) and wetter than it (45.2 in vs 36.5 in per year). Iron Mountain Lake has a Humid subtropical climate; Seattle a Warm-summer Mediterranean climate.

Iron Mountain Lake, MO

Annual avg
56.1°F
Annual precip
45.2 in
Warmest month
July (88.5°F)
Coldest month
January (22.6°F)
Annual swing
45°F
Pleasant months
1 / 12
Humid subtropical Cfa 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

Iron Mountain Lake

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 Iron Mountain Lake Seattle
High Low Precip High Low Precip
January 42.8°F 22.6°F 2.58 in 48.6°F 36.8°F 5.21 in
February 47.9°F 25.8°F 2.78 in 50.7°F 36.8°F 3.71 in
March 57.8°F 34.3°F 3.81 in 54.8°F 39.4°F 3.94 in
April 68.7°F 44.3°F 5.26 in 59.8°F 43.6°F 2.89 in
May 77.0°F 54.1°F 5.49 in 66.5°F 49.3°F 1.98 in
June 84.8°F 62.7°F 3.55 in 71.2°F 54.0°F 1.22 in
July 88.5°F 66.9°F 4.28 in 77.3°F 57.5°F 0.56 in
August 87.7°F 64.9°F 3.82 in 77.4°F 58.1°F 0.83 in
September 80.7°F 56.2°F 3.18 in 71.7°F 53.9°F 1.37 in
October 70.0°F 44.8°F 3.27 in 61.0°F 46.4°F 3.49 in
November 56.7°F 34.4°F 4.18 in 53.0°F 39.9°F 5.80 in
December 46.4°F 26.4°F 2.96 in 47.8°F 36.2°F 5.49 in
Iron Mountain Lake overview
Full climate profile
 Seattle overview
Full climate profile