Boise City, ID vs Seattle, WA

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

Boise City is about the same temperature as Seattle (53.2°F vs 53.8°F annual avg) and drier than it (11.5 in vs 36.5 in per year). Boise City has a Semi-arid (cold) climate; Seattle a Warm-summer Mediterranean climate.

Boise City, ID

Annual avg
53.2°F
Annual precip
11.5 in
Warmest month
July (92.7°F)
Coldest month
December (25.4°F)
Annual swing
45.2°F
Pleasant months
1 / 12
Semi-arid (cold) BSk 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

Boise City

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 Boise City Seattle
High Low Precip High Low Precip
January 38.8°F 25.5°F 1.41 in 48.6°F 36.8°F 5.21 in
February 46.0°F 29.0°F 1.00 in 50.7°F 36.8°F 3.71 in
March 55.5°F 34.9°F 1.33 in 54.8°F 39.4°F 3.94 in
April 62.3°F 39.6°F 1.23 in 59.8°F 43.6°F 2.89 in
May 72.3°F 47.5°F 1.45 in 66.5°F 49.3°F 1.98 in
June 81.4°F 54.1°F 0.75 in 71.2°F 54.0°F 1.22 in
July 92.7°F 61.9°F 0.21 in 77.3°F 57.5°F 0.56 in
August 90.7°F 60.8°F 0.17 in 77.4°F 58.1°F 0.83 in
September 80.0°F 52.6°F 0.43 in 71.7°F 53.9°F 1.37 in
October 64.8°F 41.5°F 0.81 in 61.0°F 46.4°F 3.49 in
November 48.8°F 31.7°F 1.18 in 53.0°F 39.9°F 5.80 in
December 38.8°F 25.4°F 1.54 in 47.8°F 36.2°F 5.49 in
Boise City overview
Full climate profile
 Seattle overview
Full climate profile