St. Johns, AZ vs Phoenix, AZ

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

St. Johns is cooler than Phoenix (54.1°F vs 72.5°F annual avg) and similar rainfall to it (9.1 in vs 8.9 in per year). St. Johns has a Desert (cold) climate; Phoenix a Desert (hot) climate.

St. Johns, AZ

Annual avg
54.1°F
Annual precip
9.1 in
Warmest month
July (91.1°F)
Coldest month
December (18.4°F)
Annual swing
42.3°F
Desert (cold) BWk USDA Zone 7a

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. Johns

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. Johns Phoenix
High Low Precip High Low Precip
January 49.5°F 19.4°F 0.43 in 65.4°F 44.1°F 1.17 in
February 54.6°F 22.7°F 0.53 in 68.1°F 46.1°F 1.21 in
March 62.4°F 27.9°F 0.43 in 75.0°F 50.9°F 1.09 in
April 69.9°F 34.7°F 0.29 in 82.5°F 56.6°F 0.35 in
May 79.3°F 43.5°F 0.43 in 91.5°F 64.7°F 0.19 in
June 89.8°F 53.1°F 0.18 in 101.5°F 72.7°F 0.03 in
July 91.1°F 60.6°F 1.41 in 104.0°F 80.8°F 0.81 in
August 87.9°F 58.5°F 2.08 in 102.5°F 80.5°F 0.96 in
September 83.0°F 50.3°F 1.13 in 97.5°F 74.7°F 0.71 in
October 72.2°F 36.6°F 0.69 in 86.3°F 62.7°F 0.67 in
November 59.6°F 25.9°F 0.61 in 74.0°F 50.8°F 0.90 in
December 48.8°F 18.4°F 0.88 in 63.9°F 42.7°F 0.81 in
St. Johns overview
Full climate profile
 Phoenix overview
Full climate profile