Olmsted, IL vs Seattle, WA

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

Olmsted is warmer than Seattle (57.9°F vs 53.8°F annual avg) and wetter than it (49.4 in vs 36.5 in per year). Olmsted has a Humid subtropical climate; Seattle a Warm-summer Mediterranean climate.

Olmsted, IL

Annual avg
57.9°F
Annual precip
49.4 in
Warmest month
July (89.0°F)
Coldest month
January (26.2°F)
Annual swing
44.3°F
Pleasant months
1 / 12
Humid subtropical Cfa USDA Zone 8a

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

Olmsted

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 Olmsted Seattle
High Low Precip High Low Precip
January 43.1°F 26.2°F 4.23 in 48.6°F 36.8°F 5.21 in
February 47.6°F 29.7°F 3.86 in 50.7°F 36.8°F 3.71 in
March 57.3°F 36.8°F 4.77 in 54.8°F 39.4°F 3.94 in
April 68.4°F 46.6°F 5.15 in 59.8°F 43.6°F 2.89 in
May 76.8°F 56.4°F 4.92 in 66.5°F 49.3°F 1.98 in
June 85.5°F 64.8°F 4.13 in 71.2°F 54.0°F 1.22 in
July 89.0°F 68.7°F 3.28 in 77.3°F 57.5°F 0.56 in
August 88.6°F 67.2°F 3.03 in 77.4°F 58.1°F 0.83 in
September 82.7°F 60.2°F 3.35 in 71.7°F 53.9°F 1.37 in
October 71.2°F 48.4°F 4.04 in 61.0°F 46.4°F 3.49 in
November 57.9°F 38.6°F 4.41 in 53.0°F 39.9°F 5.80 in
December 47.0°F 30.8°F 4.24 in 47.8°F 36.2°F 5.49 in
Olmsted overview
Full climate profile
 Seattle overview
Full climate profile