Chester, MT vs Phoenix, AZ

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

Chester is cooler than Phoenix (41.4°F vs 72.5°F annual avg) and similar rainfall to it (12.3 in vs 8.9 in per year). Chester has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

Chester, MT

Annual avg
41.4°F
Annual precip
12.3 in
Warmest month
July (82.5°F)
Coldest month
January (2.6°F)
Annual swing
51.4°F
Semi-arid (cold) BSk USDA Zone 5b

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

Chester

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 Chester Phoenix
High Low Precip High Low Precip
January 28.7°F 2.6°F 0.54 in 65.4°F 44.1°F 1.17 in
February 33.0°F 6.2°F 0.45 in 68.1°F 46.1°F 1.21 in
March 44.1°F 16.6°F 0.59 in 75.0°F 50.9°F 1.09 in
April 55.5°F 27.5°F 1.10 in 82.5°F 56.6°F 0.35 in
May 65.8°F 38.2°F 1.68 in 91.5°F 64.7°F 0.19 in
June 72.7°F 46.2°F 2.76 in 101.5°F 72.7°F 0.03 in
July 82.5°F 51.7°F 1.19 in 104.0°F 80.8°F 0.81 in
August 82.0°F 49.7°F 1.09 in 102.5°F 80.5°F 0.96 in
September 71.0°F 40.5°F 1.00 in 97.5°F 74.7°F 0.71 in
October 56.8°F 27.3°F 0.74 in 86.3°F 62.7°F 0.67 in
November 41.1°F 15.2°F 0.58 in 74.0°F 50.8°F 0.90 in
December 31.6°F 5.6°F 0.56 in 63.9°F 42.7°F 0.81 in
Chester overview
Full climate profile
 Phoenix overview
Full climate profile