Sumter, SC vs Phoenix, AZ

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

Sumter is cooler than Phoenix (62.1°F vs 72.5°F annual avg) and wetter than it (48.8 in vs 8.9 in per year). Sumter has a Humid subtropical climate; Phoenix a Desert (hot) climate.

Sumter, SC

Annual avg
62.1°F
Annual precip
48.8 in
Warmest month
July (90.2°F)
Coldest month
January (32.8°F)
Annual swing
36°F
Pleasant months
1 / 12
Humid subtropical Cfa USDA Zone 8b

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

Sumter

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 Sumter Phoenix
High Low Precip High Low Precip
January 55.1°F 32.8°F 3.78 in 65.4°F 44.1°F 1.17 in
February 58.5°F 35.0°F 3.47 in 68.1°F 46.1°F 1.21 in
March 66.3°F 40.9°F 3.67 in 75.0°F 50.9°F 1.09 in
April 74.7°F 49.6°F 3.40 in 82.5°F 56.6°F 0.35 in
May 81.2°F 57.8°F 3.78 in 91.5°F 64.7°F 0.19 in
June 87.3°F 65.9°F 5.05 in 101.5°F 72.7°F 0.03 in
July 90.2°F 69.6°F 5.75 in 104.0°F 80.8°F 0.81 in
August 88.5°F 68.4°F 4.92 in 102.5°F 80.5°F 0.96 in
September 83.4°F 62.9°F 4.36 in 97.5°F 74.7°F 0.71 in
October 74.4°F 50.9°F 3.88 in 86.3°F 62.7°F 0.67 in
November 64.8°F 40.0°F 2.94 in 74.0°F 50.8°F 0.90 in
December 57.4°F 35.0°F 3.83 in 63.9°F 42.7°F 0.81 in
Sumter overview
Full climate profile
 Phoenix overview
Full climate profile