Irvine, CA vs Phoenix, AZ

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

Irvine is cooler than Phoenix (64.9°F vs 72.5°F annual avg) and wetter than it (14.1 in vs 8.9 in per year). Irvine has a Semi-arid (hot) climate; Phoenix a Desert (hot) climate.

Irvine, CA

Annual avg
64.9°F
Annual precip
14.1 in
Warmest month
August (87.3°F)
Coldest month
December (42.8°F)
Annual swing
19.6°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

Irvine

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 Irvine Phoenix
High Low Precip High Low Precip
January 67.8°F 43.3°F 3.09 in 65.4°F 44.1°F 1.17 in
February 69.1°F 44.6°F 3.39 in 68.1°F 46.1°F 1.21 in
March 71.7°F 47.8°F 2.11 in 75.0°F 50.9°F 1.09 in
April 74.2°F 49.6°F 0.80 in 82.5°F 56.6°F 0.35 in
May 76.6°F 54.6°F 0.32 in 91.5°F 64.7°F 0.19 in
June 79.6°F 58.2°F 0.09 in 101.5°F 72.7°F 0.03 in
July 85.1°F 61.4°F 0.01 in 104.0°F 80.8°F 0.81 in
August 87.3°F 63.1°F 0.00 in 102.5°F 80.5°F 0.96 in
September 86.8°F 61.1°F 0.18 in 97.5°F 74.7°F 0.71 in
October 83.6°F 54.8°F 0.67 in 86.3°F 62.7°F 0.67 in
November 75.9°F 47.3°F 1.21 in 74.0°F 50.8°F 0.90 in
December 69.9°F 42.8°F 2.25 in 63.9°F 42.7°F 0.81 in
Irvine overview
Full climate profile
 Phoenix overview
Full climate profile