Port Isabel, TX vs Denver, CO

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

Port Isabel is warmer than Denver (73.9°F vs 51.4°F annual avg) and wetter than it (28.8 in vs 15.4 in per year). Port Isabel has a Semi-arid (hot) climate; Denver a Semi-arid (cold) climate.

Port Isabel, TX

Annual avg
73.9°F
Annual precip
28.8 in
Warmest month
August (92.1°F)
Coldest month
January (51.7°F)
Annual swing
24.2°F
Pleasant months
5 / 12
Semi-arid (hot) BSh USDA Zone 10b

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

Port Isabel

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 Port Isabel Denver
High Low Precip High Low Precip
January 68.9°F 51.7°F 1.45 in 46.5°F 17.6°F 0.46 in
February 72.2°F 56.3°F 1.22 in 47.5°F 19.3°F 0.53 in
March 75.7°F 61.2°F 1.68 in 56.4°F 27.1°F 1.12 in
April 80.8°F 67.0°F 1.59 in 62.5°F 33.7°F 1.67 in
May 86.1°F 72.7°F 2.36 in 71.7°F 43.4°F 2.29 in
June 90.1°F 76.3°F 3.06 in 84.1°F 52.9°F 1.68 in
July 91.0°F 77.0°F 2.27 in 90.2°F 59.3°F 2.12 in
August 92.1°F 77.0°F 1.93 in 87.9°F 57.2°F 1.83 in
September 88.5°F 73.9°F 6.15 in 80.1°F 48.2°F 1.51 in
October 85.1°F 69.0°F 3.86 in 66.7°F 35.7°F 0.98 in
November 77.5°F 60.7°F 1.77 in 54.8°F 25.5°F 0.70 in
December 70.5°F 53.6°F 1.41 in 45.9°F 17.7°F 0.47 in
Port Isabel overview
Full climate profile
 Denver overview
Full climate profile