Watertown, SD vs Phoenix, AZ

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

Watertown is cooler than Phoenix (43°F vs 72.5°F annual avg) and wetter than it (22.7 in vs 8.9 in per year). Watertown has a Warm-summer humid continental climate; Phoenix a Desert (hot) climate.

Watertown, SD

Annual avg
43°F
Annual precip
22.7 in
Warmest month
July (82.0°F)
Coldest month
January (3.1°F)
Annual swing
58.8°F
Pleasant months
2 / 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

Watertown

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 Watertown Phoenix
High Low Precip High Low Precip
January 21.4°F 3.1°F 0.58 in 65.4°F 44.1°F 1.17 in
February 25.9°F 6.7°F 0.65 in 68.1°F 46.1°F 1.21 in
March 38.6°F 19.6°F 1.00 in 75.0°F 50.9°F 1.09 in
April 54.0°F 31.5°F 2.06 in 82.5°F 56.6°F 0.35 in
May 66.9°F 44.5°F 2.87 in 91.5°F 64.7°F 0.19 in
June 76.8°F 55.4°F 3.85 in 101.5°F 72.7°F 0.03 in
July 82.0°F 60.0°F 3.05 in 104.0°F 80.8°F 0.81 in
August 79.5°F 57.5°F 2.89 in 102.5°F 80.5°F 0.96 in
September 71.6°F 48.6°F 2.45 in 97.5°F 74.7°F 0.71 in
October 56.2°F 35.2°F 1.95 in 86.3°F 62.7°F 0.67 in
November 39.8°F 21.3°F 0.68 in 74.0°F 50.8°F 0.90 in
December 26.3°F 9.3°F 0.68 in 63.9°F 42.7°F 0.81 in
Watertown overview
Full climate profile
 Phoenix overview
Full climate profile