Trenton, NJ vs Phoenix, AZ

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

Trenton is cooler than Phoenix (54.1°F vs 72.5°F annual avg) and wetter than it (45.6 in vs 8.9 in per year). Trenton has a Hot-summer humid continental climate; Phoenix a Desert (hot) climate.

Trenton, NJ

Annual avg
54.1°F
Annual precip
45.6 in
Warmest month
July (86.0°F)
Coldest month
January (24.3°F)
Annual swing
44.3°F
Pleasant months
2 / 12
Hot-summer humid continental Dfa 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

Trenton

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 Trenton Phoenix
High Low Precip High Low Precip
January 39.7°F 24.3°F 3.29 in 65.4°F 44.1°F 1.17 in
February 42.8°F 25.9°F 2.65 in 68.1°F 46.1°F 1.21 in
March 50.8°F 32.7°F 4.00 in 75.0°F 50.9°F 1.09 in
April 62.9°F 42.1°F 3.63 in 82.5°F 56.6°F 0.35 in
May 72.4°F 51.6°F 3.99 in 91.5°F 64.7°F 0.19 in
June 81.0°F 60.9°F 4.35 in 101.5°F 72.7°F 0.03 in
July 86.0°F 66.6°F 4.42 in 104.0°F 80.8°F 0.81 in
August 84.0°F 64.8°F 4.22 in 102.5°F 80.5°F 0.96 in
September 77.1°F 57.7°F 4.05 in 97.5°F 74.7°F 0.71 in
October 65.5°F 45.9°F 3.79 in 86.3°F 62.7°F 0.67 in
November 54.5°F 36.3°F 3.20 in 74.0°F 50.8°F 0.90 in
December 44.4°F 29.3°F 4.04 in 63.9°F 42.7°F 0.81 in
Trenton overview
Full climate profile
 Phoenix overview
Full climate profile