Walnut Creek, CA vs Phoenix, AZ

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

Walnut Creek is cooler than Phoenix (62.4°F vs 72.5°F annual avg) and wetter than it (17.7 in vs 8.9 in per year). Walnut Creek has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

Walnut Creek, CA

Annual avg
62.4°F
Annual precip
17.7 in
Warmest month
July (88.3°F)
Coldest month
December (41.2°F)
Annual swing
23.6°F
Pleasant months
2 / 12
Semi-arid (cold) BSk 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

Walnut Creek

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 Walnut Creek Phoenix
High Low Precip High Low Precip
January 58.4°F 41.7°F 3.46 in 65.4°F 44.1°F 1.17 in
February 63.2°F 44.1°F 3.57 in 68.1°F 46.1°F 1.21 in
March 67.7°F 46.8°F 2.57 in 75.0°F 50.9°F 1.09 in
April 72.2°F 49.2°F 1.23 in 82.5°F 56.6°F 0.35 in
May 78.0°F 53.1°F 0.61 in 91.5°F 64.7°F 0.19 in
June 84.6°F 56.7°F 0.12 in 101.5°F 72.7°F 0.03 in
July 88.3°F 58.3°F 0.00 in 104.0°F 80.8°F 0.81 in
August 88.2°F 58.8°F 0.02 in 102.5°F 80.5°F 0.96 in
September 86.1°F 57.6°F 0.06 in 97.5°F 74.7°F 0.71 in
October 78.2°F 53.1°F 0.68 in 86.3°F 62.7°F 0.67 in
November 66.7°F 45.9°F 1.87 in 74.0°F 50.8°F 0.90 in
December 58.7°F 41.2°F 3.55 in 63.9°F 42.7°F 0.81 in
Walnut Creek overview
Full climate profile
 Phoenix overview
Full climate profile