Sun Valley, ID vs Phoenix, AZ

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

Sun Valley is cooler than Phoenix (40.2°F vs 72.5°F annual avg) and wetter than it (17.3 in vs 8.9 in per year). Sun Valley has a Mediterranean continental (warm summer) climate; Phoenix a Desert (hot) climate.

Sun Valley, ID

Annual avg
40.2°F
Annual precip
17.3 in
Warmest month
July (80.0°F)
Coldest month
January (8.0°F)
Annual swing
43°F
Mediterranean continental (warm summer) Dsb USDA Zone 6a

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

Sun Valley

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 Sun Valley Phoenix
High Low Precip High Low Precip
January 31.3°F 8.0°F 2.25 in 65.4°F 44.1°F 1.17 in
February 35.0°F 11.1°F 1.88 in 68.1°F 46.1°F 1.21 in
March 42.6°F 18.7°F 1.76 in 75.0°F 50.9°F 1.09 in
April 51.9°F 26.9°F 1.17 in 82.5°F 56.6°F 0.35 in
May 61.6°F 34.7°F 1.78 in 91.5°F 64.7°F 0.19 in
June 69.7°F 39.9°F 1.26 in 101.5°F 72.7°F 0.03 in
July 80.0°F 45.1°F 0.55 in 104.0°F 80.8°F 0.81 in
August 78.7°F 43.5°F 0.50 in 102.5°F 80.5°F 0.96 in
September 69.0°F 36.1°F 1.01 in 97.5°F 74.7°F 0.71 in
October 55.9°F 27.7°F 1.40 in 86.3°F 62.7°F 0.67 in
November 41.2°F 17.4°F 1.21 in 74.0°F 50.8°F 0.90 in
December 30.3°F 9.2°F 2.57 in 63.9°F 42.7°F 0.81 in
Sun Valley overview
Full climate profile
 Phoenix overview
Full climate profile