Flat Rock, IL vs Denver, CO

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

Flat Rock is warmer than Denver (55.1°F vs 51.4°F annual avg) and wetter than it (46.3 in vs 15.4 in per year). Flat Rock has a Hot-summer humid continental climate; Denver a Semi-arid (cold) climate.

Flat Rock, IL

Annual avg
55.1°F
Annual precip
46.3 in
Warmest month
July (86.5°F)
Coldest month
January (22.8°F)
Annual swing
45.8°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa USDA Zone 7b

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

Flat Rock

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 Flat Rock Denver
High Low Precip High Low Precip
January 38.4°F 22.8°F 3.48 in 46.5°F 17.6°F 0.46 in
February 43.5°F 26.4°F 2.63 in 47.5°F 19.3°F 0.53 in
March 54.4°F 34.7°F 3.58 in 56.4°F 27.1°F 1.12 in
April 66.6°F 44.5°F 5.06 in 62.5°F 33.7°F 1.67 in
May 76.1°F 55.4°F 4.91 in 71.7°F 43.4°F 2.29 in
June 84.1°F 63.4°F 4.88 in 84.1°F 52.9°F 1.68 in
July 86.5°F 66.3°F 4.23 in 90.2°F 59.3°F 2.12 in
August 85.7°F 64.0°F 3.53 in 87.9°F 57.2°F 1.83 in
September 80.4°F 56.2°F 3.58 in 80.1°F 48.2°F 1.51 in
October 68.4°F 45.6°F 3.73 in 66.7°F 35.7°F 0.98 in
November 53.6°F 34.8°F 3.63 in 54.8°F 25.5°F 0.70 in
December 42.1°F 27.5°F 3.06 in 45.9°F 17.7°F 0.47 in
Flat Rock overview
Full climate profile
 Denver overview
Full climate profile