Rock Rapids, IA vs Phoenix, AZ

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

Rock Rapids is cooler than Phoenix (46°F vs 72.5°F annual avg) and wetter than it (29.3 in vs 8.9 in per year). Rock Rapids has a Hot-summer humid continental climate; Phoenix a Desert (hot) climate.

Rock Rapids, IA

Annual avg
46°F
Annual precip
29.3 in
Warmest month
July (84.7°F)
Coldest month
January (6.1°F)
Annual swing
57.7°F
Hot-summer humid continental Dfa 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

Rock Rapids

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 Rock Rapids Phoenix
High Low Precip High Low Precip
January 25.2°F 6.1°F 0.61 in 65.4°F 44.1°F 1.17 in
February 30.3°F 10.4°F 0.70 in 68.1°F 46.1°F 1.21 in
March 43.2°F 22.3°F 1.52 in 75.0°F 50.9°F 1.09 in
April 57.9°F 33.8°F 3.03 in 82.5°F 56.6°F 0.35 in
May 70.3°F 46.8°F 3.96 in 91.5°F 64.7°F 0.19 in
June 80.7°F 58.3°F 5.03 in 101.5°F 72.7°F 0.03 in
July 84.7°F 61.8°F 3.59 in 104.0°F 80.8°F 0.81 in
August 82.3°F 59.0°F 3.12 in 102.5°F 80.5°F 0.96 in
September 75.3°F 49.6°F 3.24 in 97.5°F 74.7°F 0.71 in
October 61.1°F 36.2°F 2.23 in 86.3°F 62.7°F 0.67 in
November 44.2°F 23.0°F 1.42 in 74.0°F 50.8°F 0.90 in
December 30.3°F 12.1°F 0.82 in 63.9°F 42.7°F 0.81 in
Rock Rapids overview
Full climate profile
 Phoenix overview
Full climate profile