Rock River, WY vs Denver, CO

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

Rock River is cooler than Denver (42.2°F vs 51.4°F annual avg) and similar rainfall to it (11.2 in vs 15.4 in per year). Both cities share a Semi-arid (cold) climate (BSk).

Rock River, WY

Annual avg
42.2°F
Annual precip
11.2 in
Warmest month
July (85.3°F)
Coldest month
January (10.3°F)
Annual swing
46°F
Semi-arid (cold) BSk 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

Rock River

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 Rock River Denver
High Low Precip High Low Precip
January 31.3°F 10.3°F 0.41 in 46.5°F 17.6°F 0.46 in
February 34.8°F 11.5°F 0.63 in 47.5°F 19.3°F 0.53 in
March 45.6°F 18.1°F 0.72 in 56.4°F 27.1°F 1.12 in
April 55.1°F 25.0°F 1.38 in 62.5°F 33.7°F 1.67 in
May 64.8°F 33.3°F 1.74 in 71.7°F 43.4°F 2.29 in
June 77.4°F 42.6°F 1.38 in 84.1°F 52.9°F 1.68 in
July 85.3°F 48.3°F 1.11 in 90.2°F 59.3°F 2.12 in
August 83.0°F 45.9°F 0.82 in 87.9°F 57.2°F 1.83 in
September 73.6°F 36.3°F 0.96 in 80.1°F 48.2°F 1.51 in
October 59.1°F 26.7°F 1.01 in 66.7°F 35.7°F 0.98 in
November 42.8°F 17.6°F 0.55 in 54.8°F 25.5°F 0.70 in
December 32.8°F 10.7°F 0.49 in 45.9°F 17.7°F 0.47 in
Rock River overview
Full climate profile
 Denver overview
Full climate profile