Fontana, CA vs Phoenix, AZ

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

Fontana is cooler than Phoenix (66.8°F vs 72.5°F annual avg) and similar rainfall to it (11.6 in vs 8.9 in per year). Fontana has a Semi-arid (hot) climate; Phoenix a Desert (hot) climate.

Fontana, CA

Annual avg
66.8°F
Annual precip
11.6 in
Warmest month
August (94.9°F)
Coldest month
December (43.6°F)
Annual swing
24.9°F
Pleasant months
2 / 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

Fontana

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 Fontana Phoenix
High Low Precip High Low Precip
January 67.7°F 44.6°F 2.57 in 65.4°F 44.1°F 1.17 in
February 68.1°F 46.2°F 3.07 in 68.1°F 46.1°F 1.21 in
March 71.7°F 48.7°F 1.64 in 75.0°F 50.9°F 1.09 in
April 75.7°F 51.1°F 0.76 in 82.5°F 56.6°F 0.35 in
May 79.8°F 55.6°F 0.30 in 91.5°F 64.7°F 0.19 in
June 86.4°F 60.0°F 0.02 in 101.5°F 72.7°F 0.03 in
July 93.8°F 64.7°F 0.05 in 104.0°F 80.8°F 0.81 in
August 94.9°F 65.2°F 0.03 in 102.5°F 80.5°F 0.96 in
September 91.3°F 63.8°F 0.10 in 97.5°F 74.7°F 0.71 in
October 82.6°F 57.1°F 0.41 in 86.3°F 62.7°F 0.67 in
November 74.7°F 49.0°F 0.80 in 74.0°F 50.8°F 0.90 in
December 66.9°F 43.6°F 1.89 in 63.9°F 42.7°F 0.81 in
Fontana overview
Full climate profile
 Phoenix overview
Full climate profile