Irwin, ID vs Denver, CO

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

Irwin is cooler than Denver (42.6°F vs 51.4°F annual avg) and similar rainfall to it (20.1 in vs 15.4 in per year). Irwin has a Warm-summer humid continental climate; Denver a Semi-arid (cold) 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

Denver, CO

Annual avg
51.4°F
Annual precip
15.4 in
Warmest month
July (90.2°F)
Coldest month
January (17.6°F)
Annual swing
43°F
Semi-arid (cold) BSk USDA Zone 7a

Best months to visit each city

Irwin

J
F
M
A
M
J
J
A
S
O
N
D

Denver

J
F
M
A
M
J
J
A
S
O
N
D

Month-by-month comparison

Month Irwin Denver
High Low Precip High Low Precip
January 30.4°F 11.0°F 1.85 in 46.5°F 17.6°F 0.46 in
February 34.7°F 13.8°F 1.32 in 47.5°F 19.3°F 0.53 in
March 45.0°F 21.5°F 1.54 in 56.4°F 27.1°F 1.12 in
April 56.1°F 27.2°F 1.88 in 62.5°F 33.7°F 1.67 in
May 65.9°F 34.6°F 2.53 in 71.7°F 43.4°F 2.29 in
June 74.9°F 40.7°F 2.07 in 84.1°F 52.9°F 1.68 in
July 84.9°F 45.8°F 1.25 in 90.2°F 59.3°F 2.12 in
August 84.2°F 44.2°F 1.25 in 87.9°F 57.2°F 1.83 in
September 74.5°F 37.4°F 1.55 in 80.1°F 48.2°F 1.51 in
October 59.3°F 28.5°F 1.81 in 66.7°F 35.7°F 0.98 in
November 43.0°F 20.3°F 1.59 in 54.8°F 25.5°F 0.70 in
December 31.6°F 12.4°F 1.44 in 45.9°F 17.7°F 0.47 in
Irwin overview
Full climate profile
 Denver overview
Full climate profile