PORT ISABEL, TX 78578 Weather Forecast & Current Conditions
Enter ZIP code or City, State   
    


  78578 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

PORT ISABEL, TX
Current Weather
7:53 PM CST JAN 6, 2026
Clear
70°F
Feels Like: 70°F
Dewpoint: 66°F
Rel. Hum.: 87%
Visibility: 7 miles
Wind: SSE at 5 mph
Pressure: 29.98 inches
Last 72 hours

Local Area Snow Depth

Texas Current Weather

Texas MOS Forecast Weather


Regional Weather Maps

(Automated weather data from NWS/FAA)
  78578 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

PORT ISABEL, TX 78578
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TODAY
Cloudy this morning, then becoming partly sunny. Patchy fog this morning. Highs in the lower 80s. Southeast winds 5 to 10 mph.
TONIGHT
Mostly cloudy. Lows in the upper 60s. East winds 5 to 10 mph, becoming south after midnight.
WEDNESDAY
Partly sunny in the morning, then clearing. Breezy with highs around 90. Southwest winds 5 to 10 mph, increasing to southeast 20 to 25 mph with gusts up to 35 mph in the afternoon.
WEDNESDAY NIGHT
Mostly clear and breezy and less humid with lows in the mid 60s. Northeast winds 15 to 25 mph with gusts up to 40 mph.
THURSDAY
Sunny, breezy and much cooler with highs in the mid 70s. Northeast winds 15 to 25 mph with gusts up to 35 mph.
THURSDAY NIGHT
Partly cloudy. Lows in the upper 50s.
FRIDAY
Sunny. Highs in the mid 70s.
FRIDAY NIGHT AND SATURDAY
Partly cloudy and breezy. Lows around 60. Highs in the upper 70s.
SATURDAY NIGHT THROUGH SUNDAY NIGHT
Partly cloudy and windy. Lows in the upper 60s. Highs in the upper 70s.
MONDAY
Partly sunny and breezy. Highs in the lower 80s.

  78578 WEATHER SATELLITE LOOPS
Visible Weather Satellite
PORT ISABEL, TX 78578
Infrared Weather Satellite
PORT ISABEL, TX 78578
  78578 WEATHER RADAR LOOP
NEXRAD Weather Radar
PORT ISABEL, TX 78578
 MOS COMPUTER WEATHER FORECAST

PORT ISABEL, TX 3 hourly weather forecast
weather forecast created  5:00 AM MST  1/ 6/2026
Tuesday
6 JAN 2026		 PORT ISABEL, TX 78578 weather forecast Day 1, 12 hours 12 PM 81° 83° Clear 0%

 0% Thunder
( 0% severe)		 S   12 58% 65°
High 83° PORT ISABEL, TX 78578 weather forecast Day 1, 15 hours 3 PM 82° 84° Partly Cloudy S   13 56% 65°
Increasing Clouds



 PORT ISABEL, TX 78578 weather forecast Day 1, 18 hours 6 PM 75° 75° Partly Cloudy 1%

 0% Thunder
( 0% severe)		 SSE   10 71% 65°
PORT ISABEL, TX 78578 weather forecast Day 1, 21 hours 9 PM 71° 71° Mostly Cloudy SSE   8 87% 67°
Wednesday
7 JAN 2026		 PORT ISABEL, TX 78578 weather forecast Day 2, 0 hours 12 AM 69° 69° Partly Cloudy 3%

 0% Thunder
( 0% severe)		 S   8 93% 67°
Low 65° PORT ISABEL, TX 78578 weather forecast Day 2, 3 hours 3 AM 68° 68° Partly Cloudy S   8 93% 66°
High 83° PORT ISABEL, TX 78578 weather forecast Day 2, 6 hours 6 AM 67° 67° Partly Cloudy 1%

 0% Thunder
( 0% severe)		 S   7 93% 65°

Partly Cloudy



 PORT ISABEL, TX 78578 weather forecast Day 2, 9 hours 9 AM 73° 73° Partly Cloudy S   12 84% 68°
PORT ISABEL, TX 78578 weather forecast Day 2, 12 hours 12 PM 81° 83° Partly Cloudy 1%

 0% Thunder
( 0% severe)		 S   16 58% 65°
PORT ISABEL, TX 78578 weather forecast Day 2, 15 hours 3 PM 81° 83° Partly Cloudy SSE   18 58% 65°
PORT ISABEL, TX 78578 weather forecast Day 2, 18 hours 6 PM 75° 75° Clear 0%

 0% Thunder
( 0% severe)		 SSE   15 71% 65°
PORT ISABEL, TX 78578 weather forecast Day 2, 21 hours 9 PM 71° 71° Partly Cloudy SSE   15 84% 66°
Thursday
8 JAN 2026		 PORT ISABEL, TX 78578 weather forecast Day 3, 0 hours 12 AM 71° 71° Partly Cloudy 0%

 0% Thunder
( 0% severe)		 SSE   15 87% 67°
Low 67° PORT ISABEL, TX 78578 weather forecast Day 3, 3 hours 3 AM 70° 70° Partly Cloudy S   16 90% 67°
High 84° PORT ISABEL, TX 78578 weather forecast Day 3, 6 hours 6 AM 70° 70° Partly Cloudy 0%

 0% Thunder
( 2% severe)		 S   16 87% 66°

Partly Cloudy




Breezy		 PORT ISABEL, TX 78578 weather forecast Day 3, 9 hours 9 AM 75° 75° Partly Cloudy S   20 79% 68°
PORT ISABEL, TX 78578 weather forecast Day 3, 15 hours 12 PM 82° 84° Partly Cloudy 0%

 0% Thunder
( 1% severe)		 S   22 58% 66°
PORT ISABEL, TX 78578 weather forecast Day 3, 18 hours 3 PM 82° 84° Partly Cloudy S   21 58% 66°
PORT ISABEL, TX 78578 weather forecast Day 3, 21 hours 6 PM 76° 77° Partly Cloudy     SSE   15 74% 67°

PORT ISABEL, TX extended weather forecast
Friday
9 JAN 2026		 Saturday
10 JAN 2026		 Sunday
11 JAN 2026		 Monday
12 JAN 2026		 Tuesday
13 JAN 2026
Low 67° Low 54° Low 44° Low 45° Low 53°
High 82° High 62° High 59° High 66° High 71°
PORT ISABEL, TX 78578 weather forecast Day 4 PORT ISABEL, TX 78578 weather forecast Day 5 PORT ISABEL, TX 78578 weather forecast Day 6 PORT ISABEL, TX 78578 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Mostly Cloudy
28% Rain		 Overcast
61% Rain		 Overcast
37% Rain		 Overcast
27% Rain		 Overcast
45% Rain
WEATHER SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP: 		Port Isabel, TX
Port Isabel, TX snow
Port Isabel, TX radar
TX map 		-or-
-or-
-or-
  		78578
78578 snow
78578 radar
  		-or-
-or-
 
  		TX
TX snow
 
 
Copyright © 2024 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions