San Ramon, CA vs Phoenix, AZ

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

San Ramon is cooler than Phoenix (58.4°F vs 72.5°F annual avg) and wetter than it (26.1 in vs 8.9 in per year). San Ramon has a Hot-summer Mediterranean climate; Phoenix a Desert (hot) climate.

San Ramon, CA

Annual avg
58.4°F
Annual precip
26.1 in
Warmest month
August (82.8°F)
Coldest month
December (41.3°F)
Annual swing
24.6°F
Pleasant months
3 / 12
Hot-summer Mediterranean Csa 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 Ramon

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 Ramon Phoenix
High Low Precip High Low Precip
January 53.7°F 41.7°F 5.06 in 65.4°F 44.1°F 1.17 in
February 54.6°F 41.7°F 4.90 in 68.1°F 46.1°F 1.21 in
March 57.9°F 42.9°F 3.69 in 75.0°F 50.9°F 1.09 in
April 62.0°F 44.4°F 1.92 in 82.5°F 56.6°F 0.35 in
May 67.8°F 49.3°F 1.13 in 91.5°F 64.7°F 0.19 in
June 75.9°F 55.4°F 0.27 in 101.5°F 72.7°F 0.03 in
July 82.5°F 61.5°F 0.01 in 104.0°F 80.8°F 0.81 in
August 82.8°F 61.0°F 0.03 in 102.5°F 80.5°F 0.96 in
September 80.0°F 59.7°F 0.12 in 97.5°F 74.7°F 0.71 in
October 71.7°F 54.0°F 1.19 in 86.3°F 62.7°F 0.67 in
November 60.4°F 46.2°F 2.65 in 74.0°F 50.8°F 0.90 in
December 53.4°F 41.3°F 5.08 in 63.9°F 42.7°F 0.81 in
San Ramon overview
Full climate profile
 Phoenix overview
Full climate profile