Marietta, IL vs Denver, CO

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

Marietta is about the same temperature as Denver (51.5°F vs 51.4°F annual avg) and wetter than it (38.5 in vs 15.4 in per year). Marietta has a Hot-summer humid continental climate; Denver a Semi-arid (cold) climate.

Marietta, IL

Annual avg
51.5°F
Annual precip
38.5 in
Warmest month
July (85.7°F)
Coldest month
January (16.0°F)
Annual swing
50.7°F
Pleasant months
2 / 12
Hot-summer humid continental Dfa USDA Zone 7a

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

Marietta

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 Marietta Denver
High Low Precip High Low Precip
January 32.7°F 16.0°F 1.91 in 46.5°F 17.6°F 0.46 in
February 37.9°F 19.0°F 1.92 in 47.5°F 19.3°F 0.53 in
March 50.5°F 28.8°F 2.68 in 56.4°F 27.1°F 1.12 in
April 63.6°F 39.8°F 3.79 in 62.5°F 33.7°F 1.67 in
May 73.8°F 52.0°F 5.05 in 71.7°F 43.4°F 2.29 in
June 82.4°F 61.6°F 4.82 in 84.1°F 52.9°F 1.68 in
July 85.7°F 64.4°F 4.10 in 90.2°F 59.3°F 2.12 in
August 83.5°F 62.5°F 3.21 in 87.9°F 57.2°F 1.83 in
September 78.0°F 54.9°F 3.77 in 80.1°F 48.2°F 1.51 in
October 66.0°F 43.0°F 2.99 in 66.7°F 35.7°F 0.98 in
November 50.2°F 30.8°F 2.42 in 54.8°F 25.5°F 0.70 in
December 38.1°F 21.7°F 1.80 in 45.9°F 17.7°F 0.47 in
Marietta overview
Full climate profile
 Denver overview
Full climate profile