Shelby, MT vs Seattle, WA

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

Shelby is cooler than Seattle (42.2°F vs 53.8°F annual avg) and drier than it (12.1 in vs 36.5 in per year). Shelby has a Semi-arid (cold) climate; Seattle a Warm-summer Mediterranean climate.

Shelby, MT

Annual avg
42.2°F
Annual precip
12.1 in
Warmest month
July (82.2°F)
Coldest month
January (6.1°F)
Annual swing
48°F
Semi-arid (cold) BSk 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

Shelby

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 Shelby Seattle
High Low Precip High Low Precip
January 31.4°F 6.1°F 0.46 in 48.6°F 36.8°F 5.21 in
February 35.3°F 9.9°F 0.36 in 50.7°F 36.8°F 3.71 in
March 43.9°F 18.4°F 0.63 in 54.8°F 39.4°F 3.94 in
April 54.2°F 28.4°F 1.34 in 59.8°F 43.6°F 2.89 in
May 64.4°F 38.0°F 1.77 in 66.5°F 49.3°F 1.98 in
June 72.6°F 46.0°F 2.85 in 71.2°F 54.0°F 1.22 in
July 82.2°F 51.5°F 1.14 in 77.3°F 57.5°F 0.56 in
August 82.2°F 49.3°F 0.85 in 77.4°F 58.1°F 0.83 in
September 70.9°F 40.5°F 1.01 in 71.7°F 53.9°F 1.37 in
October 56.2°F 29.0°F 0.74 in 61.0°F 46.4°F 3.49 in
November 42.0°F 17.6°F 0.52 in 53.0°F 39.9°F 5.80 in
December 33.1°F 9.1°F 0.46 in 47.8°F 36.2°F 5.49 in
Shelby overview
Full climate profile
 Seattle overview
Full climate profile