Irwin, ID vs Phoenix, AZ

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

Irwin is cooler than Phoenix (42.6°F vs 72.5°F annual avg) and wetter than it (20.1 in vs 8.9 in per year). Irwin has a Warm-summer humid continental climate; Phoenix a Desert (hot) climate.

Irwin, ID

Annual avg
42.6°F
Annual precip
20.1 in
Warmest month
July (84.9°F)
Coldest month
January (11.0°F)
Annual swing
44.6°F
Warm-summer humid continental Dfb 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

Irwin

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 Irwin Phoenix
High Low Precip High Low Precip
January 30.4°F 11.0°F 1.85 in 65.4°F 44.1°F 1.17 in
February 34.7°F 13.8°F 1.32 in 68.1°F 46.1°F 1.21 in
March 45.0°F 21.5°F 1.54 in 75.0°F 50.9°F 1.09 in
April 56.1°F 27.2°F 1.88 in 82.5°F 56.6°F 0.35 in
May 65.9°F 34.6°F 2.53 in 91.5°F 64.7°F 0.19 in
June 74.9°F 40.7°F 2.07 in 101.5°F 72.7°F 0.03 in
July 84.9°F 45.8°F 1.25 in 104.0°F 80.8°F 0.81 in
August 84.2°F 44.2°F 1.25 in 102.5°F 80.5°F 0.96 in
September 74.5°F 37.4°F 1.55 in 97.5°F 74.7°F 0.71 in
October 59.3°F 28.5°F 1.81 in 86.3°F 62.7°F 0.67 in
November 43.0°F 20.3°F 1.59 in 74.0°F 50.8°F 0.90 in
December 31.6°F 12.4°F 1.44 in 63.9°F 42.7°F 0.81 in
Irwin overview
Full climate profile
 Phoenix overview
Full climate profile