Castalia, IA vs Phoenix, AZ

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

Castalia is cooler than Phoenix (46°F vs 72.5°F annual avg) and wetter than it (38.9 in vs 8.9 in per year). Castalia has a Hot-summer humid continental climate; Phoenix a Desert (hot) climate.

Castalia, IA

Annual avg
46°F
Annual precip
38.9 in
Warmest month
July (82.8°F)
Coldest month
January (7.4°F)
Annual swing
55.3°F
Pleasant months
1 / 12
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

Castalia

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 Castalia Phoenix
High Low Precip High Low Precip
January 25.7°F 7.4°F 1.12 in 65.4°F 44.1°F 1.17 in
February 29.9°F 10.5°F 1.21 in 68.1°F 46.1°F 1.21 in
March 43.0°F 22.4°F 2.09 in 75.0°F 50.9°F 1.09 in
April 57.5°F 34.0°F 4.14 in 82.5°F 56.6°F 0.35 in
May 69.4°F 46.9°F 4.99 in 91.5°F 64.7°F 0.19 in
June 79.0°F 57.8°F 5.88 in 101.5°F 72.7°F 0.03 in
July 82.8°F 60.9°F 4.52 in 104.0°F 80.8°F 0.81 in
August 80.8°F 58.2°F 4.36 in 102.5°F 80.5°F 0.96 in
September 74.0°F 49.2°F 3.96 in 97.5°F 74.7°F 0.71 in
October 60.6°F 37.0°F 3.00 in 86.3°F 62.7°F 0.67 in
November 44.7°F 25.5°F 2.10 in 74.0°F 50.8°F 0.90 in
December 31.4°F 14.0°F 1.57 in 63.9°F 42.7°F 0.81 in
Castalia overview
Full climate profile
 Phoenix overview
Full climate profile