East Thermopolis, WY vs Phoenix, AZ

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

East Thermopolis is cooler than Phoenix (48.6°F vs 72.5°F annual avg) and similar rainfall to it (12 in vs 8.9 in per year). East Thermopolis has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

East Thermopolis, WY

Annual avg
48.6°F
Annual precip
12 in
Warmest month
July (91.8°F)
Coldest month
January (11.5°F)
Annual swing
50.1°F
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

East Thermopolis

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 East Thermopolis Phoenix
High Low Precip High Low Precip
January 37.3°F 11.5°F 0.39 in 65.4°F 44.1°F 1.17 in
February 41.6°F 15.6°F 0.44 in 68.1°F 46.1°F 1.21 in
March 54.0°F 25.6°F 0.85 in 75.0°F 50.9°F 1.09 in
April 61.9°F 33.4°F 1.63 in 82.5°F 56.6°F 0.35 in
May 71.4°F 42.5°F 2.53 in 91.5°F 64.7°F 0.19 in
June 82.9°F 50.6°F 1.31 in 101.5°F 72.7°F 0.03 in
July 91.8°F 57.1°F 0.76 in 104.0°F 80.8°F 0.81 in
August 89.8°F 55.0°F 0.50 in 102.5°F 80.5°F 0.96 in
September 79.7°F 45.7°F 1.21 in 97.5°F 74.7°F 0.71 in
October 64.5°F 33.8°F 1.27 in 86.3°F 62.7°F 0.67 in
November 48.6°F 21.7°F 0.60 in 74.0°F 50.8°F 0.90 in
December 37.5°F 12.3°F 0.46 in 63.9°F 42.7°F 0.81 in
East Thermopolis overview
Full climate profile
 Phoenix overview
Full climate profile