American Falls, ID vs Phoenix, AZ

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

American Falls is cooler than Phoenix (48.7°F vs 72.5°F annual avg) and similar rainfall to it (11.1 in vs 8.9 in per year). American Falls has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

American Falls, ID

Annual avg
48.7°F
Annual precip
11.1 in
Warmest month
July (90.4°F)
Coldest month
January (18.7°F)
Annual swing
46.8°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

American Falls

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 American Falls Phoenix
High Low Precip High Low Precip
January 34.5°F 18.7°F 0.96 in 65.4°F 44.1°F 1.17 in
February 39.1°F 21.0°F 0.68 in 68.1°F 46.1°F 1.21 in
March 51.8°F 29.1°F 1.02 in 75.0°F 50.9°F 1.09 in
April 60.0°F 35.0°F 1.30 in 82.5°F 56.6°F 0.35 in
May 71.3°F 42.5°F 1.54 in 91.5°F 64.7°F 0.19 in
June 79.1°F 49.6°F 1.15 in 101.5°F 72.7°F 0.03 in
July 90.4°F 56.4°F 0.53 in 104.0°F 80.8°F 0.81 in
August 87.7°F 54.8°F 0.49 in 102.5°F 80.5°F 0.96 in
September 76.9°F 46.2°F 0.81 in 97.5°F 74.7°F 0.71 in
October 61.4°F 36.2°F 0.92 in 86.3°F 62.7°F 0.67 in
November 46.5°F 26.8°F 0.83 in 74.0°F 50.8°F 0.90 in
December 34.5°F 20.0°F 0.87 in 63.9°F 42.7°F 0.81 in
American Falls overview
Full climate profile
 Phoenix overview
Full climate profile