Letts, IA vs Denver, CO

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

Letts is cooler than Denver (48.8°F vs 51.4°F annual avg) and wetter than it (38.8 in vs 15.4 in per year). Letts has a Hot-summer humid continental climate; Denver a Semi-arid (cold) climate.

Letts, IA

Annual avg
48.8°F
Annual precip
38.8 in
Warmest month
July (83.9°F)
Coldest month
January (10.9°F)
Annual swing
53°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa 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

Letts

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 Letts Denver
High Low Precip High Low Precip
January 29.9°F 10.9°F 1.17 in 46.5°F 17.6°F 0.46 in
February 34.3°F 14.0°F 1.94 in 47.5°F 19.3°F 0.53 in
March 48.0°F 25.8°F 2.33 in 56.4°F 27.1°F 1.12 in
April 61.5°F 37.9°F 3.85 in 62.5°F 33.7°F 1.67 in
May 71.5°F 49.5°F 5.41 in 71.7°F 43.4°F 2.29 in
June 80.1°F 59.2°F 4.91 in 84.1°F 52.9°F 1.68 in
July 83.9°F 62.9°F 4.09 in 90.2°F 59.3°F 2.12 in
August 82.4°F 60.7°F 4.22 in 87.9°F 57.2°F 1.83 in
September 76.3°F 51.5°F 3.75 in 80.1°F 48.2°F 1.51 in
October 63.1°F 39.7°F 3.03 in 66.7°F 35.7°F 0.98 in
November 48.4°F 26.9°F 2.19 in 54.8°F 25.5°F 0.70 in
December 35.2°F 17.2°F 1.94 in 45.9°F 17.7°F 0.47 in
Letts overview
Full climate profile
 Denver overview
Full climate profile