Castalia, IA vs Denver, CO

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

Castalia is cooler than Denver (46°F vs 51.4°F annual avg) and wetter than it (38.9 in vs 15.4 in per year). Castalia has a Hot-summer humid continental climate; Denver a Semi-arid (cold) climate.

Castalia, IA

Annual avg
46°F
Annual precip
38.9 in
Warmest month
July (82.8°F)
Coldest month
January (7.4°F)
Annual swing
55.3°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa USDA Zone 6a

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

Castalia

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 Castalia Denver
High Low Precip High Low Precip
January 25.7°F 7.4°F 1.12 in 46.5°F 17.6°F 0.46 in
February 29.9°F 10.5°F 1.21 in 47.5°F 19.3°F 0.53 in
March 43.0°F 22.4°F 2.09 in 56.4°F 27.1°F 1.12 in
April 57.5°F 34.0°F 4.14 in 62.5°F 33.7°F 1.67 in
May 69.4°F 46.9°F 4.99 in 71.7°F 43.4°F 2.29 in
June 79.0°F 57.8°F 5.88 in 84.1°F 52.9°F 1.68 in
July 82.8°F 60.9°F 4.52 in 90.2°F 59.3°F 2.12 in
August 80.8°F 58.2°F 4.36 in 87.9°F 57.2°F 1.83 in
September 74.0°F 49.2°F 3.96 in 80.1°F 48.2°F 1.51 in
October 60.6°F 37.0°F 3.00 in 66.7°F 35.7°F 0.98 in
November 44.7°F 25.5°F 2.10 in 54.8°F 25.5°F 0.70 in
December 31.4°F 14.0°F 1.57 in 45.9°F 17.7°F 0.47 in
Castalia overview
Full climate profile
 Denver overview
Full climate profile