Great Falls, MT vs Denver, CO

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

Great Falls is cooler than Denver (47°F vs 51.4°F annual avg) and similar rainfall to it (15.4 in vs 15.4 in per year). Both cities share a Semi-arid (cold) climate (BSk).

Great Falls, MT

Annual avg
47°F
Annual precip
15.4 in
Warmest month
July (85.8°F)
Coldest month
January (17.5°F)
Annual swing
43.2°F
Semi-arid (cold) BSk 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

Great Falls

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 Great Falls Denver
High Low Precip High Low Precip
January 36.8°F 17.5°F 0.61 in 46.5°F 17.6°F 0.46 in
February 38.6°F 18.7°F 0.58 in 47.5°F 19.3°F 0.53 in
March 48.2°F 25.2°F 0.63 in 56.4°F 27.1°F 1.12 in
April 58.3°F 33.2°F 1.79 in 62.5°F 33.7°F 1.67 in
May 67.0°F 41.9°F 2.66 in 71.7°F 43.4°F 2.29 in
June 75.4°F 49.6°F 2.74 in 84.1°F 52.9°F 1.68 in
July 85.8°F 55.0°F 1.34 in 90.2°F 59.3°F 2.12 in
August 83.9°F 53.4°F 1.30 in 87.9°F 57.2°F 1.83 in
September 72.6°F 44.7°F 1.39 in 80.1°F 48.2°F 1.51 in
October 59.1°F 35.9°F 1.13 in 66.7°F 35.7°F 0.98 in
November 45.3°F 26.0°F 0.70 in 54.8°F 25.5°F 0.70 in
December 36.7°F 19.8°F 0.56 in 45.9°F 17.7°F 0.47 in
Great Falls overview
Full climate profile
 Denver overview
Full climate profile