Portland, OR vs Phoenix, AZ

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

Portland is cooler than Phoenix (54.8°F vs 72.5°F annual avg) and wetter than it (44.1 in vs 8.9 in per year). Portland has a Warm-summer Mediterranean climate; Phoenix a Desert (hot) climate.

Portland, OR

Annual avg
54.8°F
Annual precip
44.1 in
Warmest month
August (80.6°F)
Coldest month
January (37.3°F)
Annual swing
28°F
Pleasant months
2 / 12
Warm-summer Mediterranean Csb USDA Zone 9a

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

Best months to visit each city

Portland

J
F
M
A
M
J
J
A
S
O
N
D

Phoenix

J
F
M
A
M
J
J
A
S
O
N
D

Month-by-month comparison

Month Portland Phoenix
High Low Precip High Low Precip
January 46.9°F 37.3°F 6.36 in 65.4°F 44.1°F 1.17 in
February 50.5°F 38.8°F 4.74 in 68.1°F 46.1°F 1.21 in
March 55.8°F 40.9°F 4.83 in 75.0°F 50.9°F 1.09 in
April 60.7°F 44.2°F 3.63 in 82.5°F 56.6°F 0.35 in
May 68.0°F 49.4°F 2.58 in 91.5°F 64.7°F 0.19 in
June 72.9°F 53.3°F 1.49 in 101.5°F 72.7°F 0.03 in
July 80.3°F 57.9°F 0.43 in 104.0°F 80.8°F 0.81 in
August 80.6°F 58.6°F 0.54 in 102.5°F 80.5°F 0.96 in
September 74.9°F 55.1°F 1.58 in 97.5°F 74.7°F 0.71 in
October 62.9°F 47.9°F 3.96 in 86.3°F 62.7°F 0.67 in
November 52.3°F 41.6°F 6.58 in 74.0°F 50.8°F 0.90 in
December 45.9°F 37.3°F 7.35 in 63.9°F 42.7°F 0.81 in
Portland overview
Full climate profile
 Phoenix overview
Full climate profile