St. Clair, MO vs Phoenix, AZ

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

St. Clair is cooler than Phoenix (56.9°F vs 72.5°F annual avg) and wetter than it (45 in vs 8.9 in per year). St. Clair has a Humid subtropical climate; Phoenix a Desert (hot) climate.

St. Clair, MO

Annual avg
56.9°F
Annual precip
45 in
Warmest month
July (90.6°F)
Coldest month
January (22.9°F)
Annual swing
46°F
Pleasant months
1 / 12
Humid subtropical Cfa USDA Zone 7b

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

St. Clair

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 St. Clair Phoenix
High Low Precip High Low Precip
January 43.0°F 22.9°F 2.72 in 65.4°F 44.1°F 1.17 in
February 48.3°F 26.1°F 2.45 in 68.1°F 46.1°F 1.21 in
March 59.1°F 35.3°F 3.87 in 75.0°F 50.9°F 1.09 in
April 70.4°F 45.0°F 4.99 in 82.5°F 56.6°F 0.35 in
May 78.1°F 54.8°F 4.85 in 91.5°F 64.7°F 0.19 in
June 86.2°F 63.3°F 4.24 in 101.5°F 72.7°F 0.03 in
July 90.6°F 67.4°F 4.74 in 104.0°F 80.8°F 0.81 in
August 89.4°F 65.8°F 3.84 in 102.5°F 80.5°F 0.96 in
September 81.7°F 57.0°F 3.63 in 97.5°F 74.7°F 0.71 in
October 70.2°F 45.6°F 3.31 in 86.3°F 62.7°F 0.67 in
November 57.3°F 35.0°F 3.66 in 74.0°F 50.8°F 0.90 in
December 46.1°F 27.2°F 2.66 in 63.9°F 42.7°F 0.81 in
St. Clair overview
Full climate profile
 Phoenix overview
Full climate profile