Prosser, WA vs Phoenix, AZ

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

Prosser is cooler than Phoenix (53°F vs 72.5°F annual avg) and similar rainfall to it (8.7 in vs 8.9 in per year). Prosser has a Desert (cold) climate; Phoenix a Desert (hot) climate.

Prosser, WA

Annual avg
53°F
Annual precip
8.7 in
Warmest month
July (90.4°F)
Coldest month
December (26.3°F)
Annual swing
42.1°F
Pleasant months
1 / 12
Desert (cold) BWk USDA Zone 8a

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

Prosser

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 Prosser Phoenix
High Low Precip High Low Precip
January 40.1°F 26.8°F 1.24 in 65.4°F 44.1°F 1.17 in
February 46.7°F 28.6°F 0.90 in 68.1°F 46.1°F 1.21 in
March 55.9°F 34.9°F 0.69 in 75.0°F 50.9°F 1.09 in
April 64.6°F 39.9°F 0.74 in 82.5°F 56.6°F 0.35 in
May 74.1°F 47.9°F 0.88 in 91.5°F 64.7°F 0.19 in
June 80.9°F 53.6°F 0.68 in 101.5°F 72.7°F 0.03 in
July 90.4°F 59.5°F 0.21 in 104.0°F 80.8°F 0.81 in
August 89.2°F 57.7°F 0.16 in 102.5°F 80.5°F 0.96 in
September 79.7°F 50.1°F 0.27 in 97.5°F 74.7°F 0.71 in
October 64.7°F 40.8°F 0.77 in 86.3°F 62.7°F 0.67 in
November 49.3°F 31.7°F 0.86 in 74.0°F 50.8°F 0.90 in
December 39.5°F 26.3°F 1.33 in 63.9°F 42.7°F 0.81 in
Prosser overview
Full climate profile
 Phoenix overview
Full climate profile