Yountville, CA vs Phoenix, AZ

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

Yountville is cooler than Phoenix (59°F vs 72.5°F annual avg) and wetter than it (28.4 in vs 8.9 in per year). Yountville has a Warm-summer Mediterranean climate; Phoenix a Desert (hot) climate.

Yountville, CA

Annual avg
59°F
Annual precip
28.4 in
Warmest month
August (86.1°F)
Coldest month
December (38.2°F)
Annual swing
22.3°F
Warm-summer Mediterranean Csb USDA Zone 9a

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

Yountville

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 Yountville Phoenix
High Low Precip High Low Precip
January 57.0°F 38.4°F 5.47 in 65.4°F 44.1°F 1.17 in
February 61.6°F 40.1°F 5.42 in 68.1°F 46.1°F 1.21 in
March 65.4°F 41.9°F 3.84 in 75.0°F 50.9°F 1.09 in
April 69.2°F 44.1°F 1.78 in 82.5°F 56.6°F 0.35 in
May 75.3°F 47.8°F 1.03 in 91.5°F 64.7°F 0.19 in
June 82.8°F 51.3°F 0.32 in 101.5°F 72.7°F 0.03 in
July 86.0°F 53.5°F 0.00 in 104.0°F 80.8°F 0.81 in
August 86.1°F 53.2°F 0.06 in 102.5°F 80.5°F 0.96 in
September 84.8°F 51.2°F 0.07 in 97.5°F 74.7°F 0.71 in
October 77.5°F 47.4°F 1.52 in 86.3°F 62.7°F 0.67 in
November 65.2°F 41.8°F 3.01 in 74.0°F 50.8°F 0.90 in
December 56.7°F 38.2°F 5.83 in 63.9°F 42.7°F 0.81 in
Yountville overview
Full climate profile
 Phoenix overview
Full climate profile