Key West, FL vs Phoenix, AZ

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

Key West is warmer than Phoenix (77.4°F vs 72.5°F annual avg) and wetter than it (46.4 in vs 8.9 in per year). Key West has a Tropical savanna climate; Phoenix a Desert (hot) climate.

Key West, FL

Annual avg
77.4°F
Annual precip
46.4 in
Warmest month
July (89.8°F)
Coldest month
January (62.9°F)
Annual swing
15.3°F
Pleasant months
4 / 12
Tropical savanna Aw USDA Zone 11b

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

Key West

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 Key West Phoenix
High Low Precip High Low Precip
January 74.7°F 62.9°F 2.01 in 65.4°F 44.1°F 1.17 in
February 76.5°F 64.3°F 1.96 in 68.1°F 46.1°F 1.21 in
March 78.8°F 66.8°F 1.41 in 75.0°F 50.9°F 1.09 in
April 82.7°F 70.9°F 2.17 in 82.5°F 56.6°F 0.35 in
May 85.6°F 74.0°F 3.71 in 91.5°F 64.7°F 0.19 in
June 88.0°F 76.8°F 4.81 in 101.5°F 72.7°F 0.03 in
July 89.8°F 77.8°F 4.48 in 104.0°F 80.8°F 0.81 in
August 89.7°F 78.5°F 6.13 in 102.5°F 80.5°F 0.96 in
September 88.3°F 77.0°F 8.24 in 97.5°F 74.7°F 0.71 in
October 85.2°F 74.6°F 6.01 in 86.3°F 62.7°F 0.67 in
November 80.6°F 69.8°F 3.28 in 74.0°F 50.8°F 0.90 in
December 76.9°F 66.0°F 2.22 in 63.9°F 42.7°F 0.81 in
Key West overview
Full climate profile
 Phoenix overview
Full climate profile