Chelsea, SD vs Phoenix, AZ

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

Chelsea is cooler than Phoenix (42.8°F vs 72.5°F annual avg) and wetter than it (23 in vs 8.9 in per year). Chelsea has a Warm-summer humid continental climate; Phoenix a Desert (hot) climate.

Chelsea, SD

Annual avg
42.8°F
Annual precip
23 in
Warmest month
July (83.7°F)
Coldest month
January (1.4°F)
Annual swing
59.5°F
Pleasant months
1 / 12
Warm-summer humid continental Dfb USDA Zone 5b

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

Chelsea

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 Chelsea Phoenix
High Low Precip High Low Precip
January 22.1°F 1.4°F 0.57 in 65.4°F 44.1°F 1.17 in
February 27.2°F 5.1°F 0.65 in 68.1°F 46.1°F 1.21 in
March 40.0°F 17.1°F 0.90 in 75.0°F 50.9°F 1.09 in
April 55.8°F 29.2°F 2.11 in 82.5°F 56.6°F 0.35 in
May 68.5°F 42.8°F 3.34 in 91.5°F 64.7°F 0.19 in
June 78.5°F 54.2°F 3.47 in 101.5°F 72.7°F 0.03 in
July 83.7°F 58.9°F 3.51 in 104.0°F 80.8°F 0.81 in
August 81.8°F 55.2°F 2.54 in 102.5°F 80.5°F 0.96 in
September 73.8°F 45.1°F 2.35 in 97.5°F 74.7°F 0.71 in
October 58.5°F 31.7°F 2.12 in 86.3°F 62.7°F 0.67 in
November 41.8°F 18.6°F 0.73 in 74.0°F 50.8°F 0.90 in
December 27.7°F 7.2°F 0.67 in 63.9°F 42.7°F 0.81 in
Chelsea overview
Full climate profile
 Phoenix overview
Full climate profile