Denver, CO vs Phoenix, AZ

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

Denver is cooler than Phoenix (51.4°F vs 72.5°F annual avg) and wetter than it (15.4 in vs 8.9 in per year). Denver has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

Denver, CO

Annual avg
51.4°F
Annual precip
15.4 in
Warmest month
July (90.2°F)
Coldest month
January (17.6°F)
Annual swing
43°F
Semi-arid (cold) BSk USDA Zone 7a

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

Denver

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 Denver Phoenix
High Low Precip High Low Precip
January 46.5°F 17.6°F 0.46 in 65.4°F 44.1°F 1.17 in
February 47.5°F 19.3°F 0.53 in 68.1°F 46.1°F 1.21 in
March 56.4°F 27.1°F 1.12 in 75.0°F 50.9°F 1.09 in
April 62.5°F 33.7°F 1.67 in 82.5°F 56.6°F 0.35 in
May 71.7°F 43.4°F 2.29 in 91.5°F 64.7°F 0.19 in
June 84.1°F 52.9°F 1.68 in 101.5°F 72.7°F 0.03 in
July 90.2°F 59.3°F 2.12 in 104.0°F 80.8°F 0.81 in
August 87.9°F 57.2°F 1.83 in 102.5°F 80.5°F 0.96 in
September 80.1°F 48.2°F 1.51 in 97.5°F 74.7°F 0.71 in
October 66.7°F 35.7°F 0.98 in 86.3°F 62.7°F 0.67 in
November 54.8°F 25.5°F 0.70 in 74.0°F 50.8°F 0.90 in
December 45.9°F 17.7°F 0.47 in 63.9°F 42.7°F 0.81 in
Denver overview
Full climate profile
 Phoenix overview
Full climate profile