Rockville, SC vs Phoenix, AZ

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

Rockville is cooler than Phoenix (66.7°F vs 72.5°F annual avg) and wetter than it (51.9 in vs 8.9 in per year). Rockville has a Humid subtropical climate; Phoenix a Desert (hot) climate.

Rockville, SC

Annual avg
66.7°F
Annual precip
51.9 in
Warmest month
July (90.3°F)
Coldest month
January (40.0°F)
Annual swing
32.7°F
Pleasant months
2 / 12
Humid subtropical Cfa 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

Rockville

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 Rockville Phoenix
High Low Precip High Low Precip
January 59.2°F 40.0°F 3.58 in 65.4°F 44.1°F 1.17 in
February 62.9°F 42.5°F 2.89 in 68.1°F 46.1°F 1.21 in
March 68.8°F 48.3°F 3.88 in 75.0°F 50.9°F 1.09 in
April 76.1°F 55.9°F 3.55 in 82.5°F 56.6°F 0.35 in
May 82.9°F 64.3°F 2.79 in 91.5°F 64.7°F 0.19 in
June 88.0°F 71.0°F 5.21 in 101.5°F 72.7°F 0.03 in
July 90.3°F 74.2°F 6.55 in 104.0°F 80.8°F 0.81 in
August 89.6°F 73.6°F 7.46 in 102.5°F 80.5°F 0.96 in
September 85.3°F 69.1°F 5.19 in 97.5°F 74.7°F 0.71 in
October 77.6°F 59.6°F 4.34 in 86.3°F 62.7°F 0.67 in
November 67.8°F 48.7°F 2.61 in 74.0°F 50.8°F 0.90 in
December 61.3°F 42.9°F 3.85 in 63.9°F 42.7°F 0.81 in
Rockville overview
Full climate profile
 Phoenix overview
Full climate profile