St. Helens, OR vs Denver, CO

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

St. Helens is about the same temperature as Denver (51.6°F vs 51.4°F annual avg) and drier than it (0 in vs 15.4 in per year). St. Helens has a Desert (cold) climate; Denver a Semi-arid (cold) climate.

St. Helens, OR

Annual avg
51.6°F
Annual precip
0 in
Warmest month
August (79.3°F)
Coldest month
January (32.9°F)
Annual swing
29.5°F
Pleasant months
4 / 12
Desert (cold) BWk USDA Zone 8b

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. Helens

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. Helens Denver
High Low Precip High Low Precip
January 43.2°F 32.9°F — in 46.5°F 17.6°F 0.46 in
February 47.1°F 33.2°F — in 47.5°F 19.3°F 0.53 in
March 52.9°F 36.1°F — in 56.4°F 27.1°F 1.12 in
April 58.7°F 40.1°F — in 62.5°F 33.7°F 1.67 in
May 66.6°F 46.1°F — in 71.7°F 43.4°F 2.29 in
June 71.6°F 50.4°F — in 84.1°F 52.9°F 1.68 in
July 78.8°F 55.0°F — in 90.2°F 59.3°F 2.12 in
August 79.3°F 54.9°F — in 87.9°F 57.2°F 1.83 in
September 73.5°F 51.9°F — in 80.1°F 48.2°F 1.51 in
October 60.5°F 44.7°F — in 66.7°F 35.7°F 0.98 in
November 49.0°F 37.7°F — in 54.8°F 25.5°F 0.70 in
December 42.0°F 33.1°F — in 45.9°F 17.7°F 0.47 in
St. Helens overview
Full climate profile
 Denver overview
Full climate profile