New Castle, CO vs Denver, CO

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

New Castle is cooler than Denver (47.6°F vs 51.4°F annual avg) and similar rainfall to it (15.5 in vs 15.4 in per year). New Castle has a Warm-summer humid continental climate; Denver a Semi-arid (cold) climate.

New Castle, CO

Annual avg
47.6°F
Annual precip
15.5 in
Warmest month
July (88.6°F)
Coldest month
January (12.3°F)
Annual swing
46.7°F
Warm-summer humid continental Dfb 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

New Castle

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 New Castle Denver
High Low Precip High Low Precip
January 36.2°F 12.3°F 1.13 in 46.5°F 17.6°F 0.46 in
February 41.6°F 19.0°F 1.16 in 47.5°F 19.3°F 0.53 in
March 53.0°F 26.1°F 1.18 in 56.4°F 27.1°F 1.12 in
April 60.0°F 32.0°F 1.63 in 62.5°F 33.7°F 1.67 in
May 70.6°F 39.6°F 1.69 in 71.7°F 43.4°F 2.29 in
June 82.4°F 46.3°F 0.96 in 84.1°F 52.9°F 1.68 in
July 88.6°F 53.4°F 1.07 in 90.2°F 59.3°F 2.12 in
August 86.0°F 52.1°F 1.27 in 87.9°F 57.2°F 1.83 in
September 78.2°F 43.8°F 1.63 in 80.1°F 48.2°F 1.51 in
October 64.8°F 33.3°F 1.56 in 66.7°F 35.7°F 0.98 in
November 49.1°F 23.6°F 1.06 in 54.8°F 25.5°F 0.70 in
December 36.4°F 15.1°F 1.19 in 45.9°F 17.7°F 0.47 in
New Castle overview
Full climate profile
 Denver overview
Full climate profile