San Dimas, CA vs Phoenix, AZ

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

San Dimas is cooler than Phoenix (65.1°F vs 72.5°F annual avg) and wetter than it (14.5 in vs 8.9 in per year). San Dimas has a Semi-arid (hot) climate; Phoenix a Desert (hot) climate.

San Dimas, CA

Annual avg
65.1°F
Annual precip
14.5 in
Warmest month
August (92.4°F)
Coldest month
December (41.5°F)
Annual swing
23.3°F
Pleasant months
1 / 12
Semi-arid (hot) BSh USDA Zone 9b

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

San Dimas

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 San Dimas Phoenix
High Low Precip High Low Precip
January 67.9°F 43.1°F 2.91 in 65.4°F 44.1°F 1.17 in
February 67.3°F 44.5°F 4.15 in 68.1°F 46.1°F 1.21 in
March 72.0°F 47.0°F 2.12 in 75.0°F 50.9°F 1.09 in
April 75.8°F 49.6°F 0.97 in 82.5°F 56.6°F 0.35 in
May 78.4°F 54.0°F 0.22 in 91.5°F 64.7°F 0.19 in
June 84.3°F 57.2°F 0.06 in 101.5°F 72.7°F 0.03 in
July 90.3°F 62.3°F 0.00 in 104.0°F 80.8°F 0.81 in
August 92.4°F 62.7°F 0.03 in 102.5°F 80.5°F 0.96 in
September 88.7°F 60.4°F 0.01 in 97.5°F 74.7°F 0.71 in
October 80.5°F 53.9°F 0.97 in 86.3°F 62.7°F 0.67 in
November 73.5°F 47.0°F 0.74 in 74.0°F 50.8°F 0.90 in
December 66.9°F 41.5°F 2.29 in 63.9°F 42.7°F 0.81 in
San Dimas overview
Full climate profile
 Phoenix overview
Full climate profile