Phoenix, AZ vs Seattle, WA

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

Phoenix is warmer than Seattle (72.5°F vs 53.8°F annual avg) and drier than it (8.9 in vs 36.5 in per year). Phoenix has a Desert (hot) climate; Seattle a Warm-summer Mediterranean climate.

Phoenix, AZ

Annual avg
72.5°F
Annual precip
8.9 in
Warmest month
July (104.0°F)
Coldest month
December (42.7°F)
Annual swing
39.1°F
Pleasant months
2 / 12
Desert (hot) BWh USDA Zone 9b

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

Phoenix

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 Phoenix Seattle
High Low Precip High Low Precip
January 65.4°F 44.1°F 1.17 in 48.6°F 36.8°F 5.21 in
February 68.1°F 46.1°F 1.21 in 50.7°F 36.8°F 3.71 in
March 75.0°F 50.9°F 1.09 in 54.8°F 39.4°F 3.94 in
April 82.5°F 56.6°F 0.35 in 59.8°F 43.6°F 2.89 in
May 91.5°F 64.7°F 0.19 in 66.5°F 49.3°F 1.98 in
June 101.5°F 72.7°F 0.03 in 71.2°F 54.0°F 1.22 in
July 104.0°F 80.8°F 0.81 in 77.3°F 57.5°F 0.56 in
August 102.5°F 80.5°F 0.96 in 77.4°F 58.1°F 0.83 in
September 97.5°F 74.7°F 0.71 in 71.7°F 53.9°F 1.37 in
October 86.3°F 62.7°F 0.67 in 61.0°F 46.4°F 3.49 in
November 74.0°F 50.8°F 0.90 in 53.0°F 39.9°F 5.80 in
December 63.9°F 42.7°F 0.81 in 47.8°F 36.2°F 5.49 in
Phoenix overview
Full climate profile
 Seattle overview
Full climate profile