Newcastle, WY vs Phoenix, AZ

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

Newcastle is cooler than Phoenix (47.3°F vs 72.5°F annual avg) and wetter than it (17.2 in vs 8.9 in per year). Newcastle has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

Newcastle, WY

Annual avg
47.3°F
Annual precip
17.2 in
Warmest month
July (86.6°F)
Coldest month
January (14.2°F)
Annual swing
49°F
Pleasant months
1 / 12
Semi-arid (cold) BSk USDA Zone 6b

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

Newcastle

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 Newcastle Phoenix
High Low Precip High Low Precip
January 34.6°F 14.2°F 0.51 in 65.4°F 44.1°F 1.17 in
February 37.6°F 16.2°F 0.67 in 68.1°F 46.1°F 1.21 in
March 48.3°F 25.5°F 0.77 in 75.0°F 50.9°F 1.09 in
April 57.0°F 33.3°F 1.70 in 82.5°F 56.6°F 0.35 in
May 66.3°F 43.3°F 2.90 in 91.5°F 64.7°F 0.19 in
June 77.6°F 53.0°F 2.68 in 101.5°F 72.7°F 0.03 in
July 86.6°F 60.2°F 2.54 in 104.0°F 80.8°F 0.81 in
August 85.6°F 58.5°F 1.82 in 102.5°F 80.5°F 0.96 in
September 75.1°F 49.0°F 1.20 in 97.5°F 74.7°F 0.71 in
October 58.9°F 35.5°F 1.24 in 86.3°F 62.7°F 0.67 in
November 45.0°F 24.2°F 0.59 in 74.0°F 50.8°F 0.90 in
December 34.6°F 15.0°F 0.54 in 63.9°F 42.7°F 0.81 in
Newcastle overview
Full climate profile
 Phoenix overview
Full climate profile