Sumner, WA vs Phoenix, AZ

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

Sumner is cooler than Phoenix (50.5°F vs 72.5°F annual avg) and wetter than it (45.1 in vs 8.9 in per year). Sumner has a Warm-summer Mediterranean climate; Phoenix a Desert (hot) climate.

Sumner, WA

Annual avg
50.5°F
Annual precip
45.1 in
Warmest month
August (76.5°F)
Coldest month
December (32.9°F)
Annual swing
25.5°F
Pleasant months
2 / 12
Warm-summer Mediterranean Csb USDA Zone 8b

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

Sumner

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 Sumner Phoenix
High Low Precip High Low Precip
January 46.1°F 33.3°F 6.12 in 65.4°F 44.1°F 1.17 in
February 48.0°F 33.1°F 4.33 in 68.1°F 46.1°F 1.21 in
March 52.4°F 35.7°F 4.80 in 75.0°F 50.9°F 1.09 in
April 57.3°F 38.7°F 3.90 in 82.5°F 56.6°F 0.35 in
May 64.3°F 44.5°F 2.97 in 91.5°F 64.7°F 0.19 in
June 69.0°F 49.0°F 2.28 in 101.5°F 72.7°F 0.03 in
July 75.7°F 52.4°F 0.92 in 104.0°F 80.8°F 0.81 in
August 76.5°F 52.6°F 0.90 in 102.5°F 80.5°F 0.96 in
September 69.6°F 48.2°F 1.78 in 97.5°F 74.7°F 0.71 in
October 59.1°F 41.7°F 4.08 in 86.3°F 62.7°F 0.67 in
November 50.3°F 36.1°F 7.06 in 74.0°F 50.8°F 0.90 in
December 45.0°F 32.9°F 5.99 in 63.9°F 42.7°F 0.81 in
Sumner overview
Full climate profile
 Phoenix overview
Full climate profile