St. Charles, IA vs Denver, CO

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

St. Charles is about the same temperature as Denver (49.9°F vs 51.4°F annual avg) and wetter than it (37.8 in vs 15.4 in per year). St. Charles has a Hot-summer humid continental climate; Denver a Semi-arid (cold) climate.

St. Charles, IA

Annual avg
49.9°F
Annual precip
37.8 in
Warmest month
July (85.5°F)
Coldest month
January (11.6°F)
Annual swing
53°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa 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

St. Charles

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 St. Charles Denver
High Low Precip High Low Precip
January 31.7°F 11.6°F 0.91 in 46.5°F 17.6°F 0.46 in
February 36.3°F 15.2°F 1.42 in 47.5°F 19.3°F 0.53 in
March 49.5°F 27.1°F 1.94 in 56.4°F 27.1°F 1.12 in
April 62.1°F 37.9°F 3.88 in 62.5°F 33.7°F 1.67 in
May 71.9°F 49.9°F 5.58 in 71.7°F 43.4°F 2.29 in
June 81.4°F 60.0°F 5.72 in 84.1°F 52.9°F 1.68 in
July 85.5°F 64.0°F 4.32 in 90.2°F 59.3°F 2.12 in
August 84.0°F 61.6°F 3.90 in 87.9°F 57.2°F 1.83 in
September 77.6°F 52.4°F 3.86 in 80.1°F 48.2°F 1.51 in
October 64.8°F 40.1°F 3.02 in 66.7°F 35.7°F 0.98 in
November 49.6°F 27.9°F 1.85 in 54.8°F 25.5°F 0.70 in
December 36.9°F 17.4°F 1.40 in 45.9°F 17.7°F 0.47 in
St. Charles overview
Full climate profile
 Denver overview
Full climate profile