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Port Isabel climate
Typical historical weather for Port Isabel, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Port Isabel.
Annual average
24.2°C
across all months
Warmest month
34.4°C
Aug average high
Coolest month
12.5°C
Jan average low
Annual rainfall
668mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
39.8°C
26 April 2017
Coldest day
-4.2°C
15 February 2021
Wettest day
173.6mm
25 July 2020
Windiest day
11.1m/s
10 April 2022
See the detail: Port Isabel on 25 July 2020.