Castle Rock, WA vs Phoenix, AZ

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

Castle Rock is cooler than Phoenix (53.2°F vs 72.5°F annual avg) and wetter than it (48.1 in vs 8.9 in per year). Castle Rock has a Warm-summer Mediterranean climate; Phoenix a Desert (hot) climate.

Castle Rock, WA

Annual avg
53.2°F
Annual precip
48.1 in
Warmest month
August (80.4°F)
Coldest month
February (34.7°F)
Annual swing
26.2°F
Pleasant months
1 / 12
Warm-summer Mediterranean Csb USDA Zone 8b

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

Castle Rock

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 Castle Rock Phoenix
High Low Precip High Low Precip
January 47.7°F 35.1°F 6.53 in 65.4°F 44.1°F 1.17 in
February 52.0°F 34.7°F 4.81 in 68.1°F 46.1°F 1.21 in
March 56.9°F 37.5°F 4.91 in 75.0°F 50.9°F 1.09 in
April 62.1°F 40.4°F 4.08 in 82.5°F 56.6°F 0.35 in
May 68.8°F 45.3°F 3.11 in 91.5°F 64.7°F 0.19 in
June 72.9°F 49.5°F 2.03 in 101.5°F 72.7°F 0.03 in
July 79.3°F 53.4°F 0.63 in 104.0°F 80.8°F 0.81 in
August 80.4°F 53.3°F 0.97 in 102.5°F 80.5°F 0.96 in
September 75.7°F 49.6°F 2.29 in 97.5°F 74.7°F 0.71 in
October 64.0°F 44.1°F 4.38 in 86.3°F 62.7°F 0.67 in
November 53.0°F 38.6°F 7.24 in 74.0°F 50.8°F 0.90 in
December 46.6°F 34.8°F 7.14 in 63.9°F 42.7°F 0.81 in
Castle Rock overview
Full climate profile
 Phoenix overview
Full climate profile