PORT ISABEL, TX 78578 Weather Forecast & Current Conditions
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  78578 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

PORT ISABEL, TX
Current Weather
12:53 AM CST NOV 5, 2025
Clear
63°F
Feels Like: 63°F
Dewpoint: 61°F
Rel. Hum.: 93%
Visibility: 10 miles
Wind: S at 6 mph
Pressure: 30.18 inches
Last 72 hours

Local Area Snow Depth

Texas Current Weather

Texas MOS Forecast Weather


Weather Map

(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 PM MST 11/ 4/2025
Wednesday
5 NOV 2025		 PORT ISABEL, TX 78578 weather forecast Day 1, 0 hours 12 AM 68° 68° Clear 0%

 0% Thunder
( 0% severe)		 SE   6 78% 61°
Low 63° PORT ISABEL, TX 78578 weather forecast Day 1, 3 hours 3 AM 65° 65° Clear SSE   5 87% 61°
High 83° PORT ISABEL, TX 78578 weather forecast Day 1, 6 hours 6 AM 64° 66° Clear 0%

 0% Thunder
( 0% severe)		 S   2 87% 60°

Clear



 PORT ISABEL, TX 78578 weather forecast Day 1, 9 hours 9 AM 76° 78° Clear SSE   1 62% 62°
PORT ISABEL, TX 78578 weather forecast Day 1, 12 hours 12 PM 81° 82° Partly Cloudy 0%

 0% Thunder
( 0% severe)		 E   6 53% 62°
PORT ISABEL, TX 78578 weather forecast Day 1, 15 hours 3 PM 81° 82° Clear E   10 53% 62°
PORT ISABEL, TX 78578 weather forecast Day 1, 18 hours 6 PM 76° 78° Clear 0%

 0% Thunder
( 0% severe)		 ESE   9 64% 63°
PORT ISABEL, TX 78578 weather forecast Day 1, 21 hours 9 PM 72° 72° Clear ESE   7 76% 64°
Thursday
6 NOV 2025		 PORT ISABEL, TX 78578 weather forecast Day 2, 0 hours 12 AM 69° 69° Clear 0%

 0% Thunder
( 0% severe)		 SSE   3 84% 64°
Low 63° PORT ISABEL, TX 78578 weather forecast Day 2, 3 hours 3 AM 66° 66° Clear S   2 90% 63°
High 84° PORT ISABEL, TX 78578 weather forecast Day 2, 6 hours 6 AM 65° 65° Clear 0%

 0% Thunder
( 0% severe)		 SW   1 90% 62°

Clear



 PORT ISABEL, TX 78578 weather forecast Day 2, 9 hours 9 AM 76° 78° Clear S   1 64% 63°
PORT ISABEL, TX 78578 weather forecast Day 2, 12 hours 12 PM 82° 83° Clear 0%

 0% Thunder
( 1% severe)		 ESE   7 53% 63°
PORT ISABEL, TX 78578 weather forecast Day 2, 15 hours 3 PM 82° 84° Clear E   9 55% 64°
PORT ISABEL, TX 78578 weather forecast Day 2, 18 hours 6 PM 76° 78° Clear 0%

 0% Thunder
( 1% severe)		 ESE   8 69% 65°
PORT ISABEL, TX 78578 weather forecast Day 2, 21 hours 9 PM 72° 72° Clear SE   6 81% 66°

PORT ISABEL, TX extended weather forecast
Friday
7 NOV 2025		 Saturday
8 NOV 2025		 Sunday
9 NOV 2025		 Monday
10 NOV 2025		 Tuesday
11 NOV 2025
Low 63° Low 68° Low 69° Low 55° Low 54°
High 89° High 88° High 81° High 70° High 76°
PORT ISABEL, TX 78578 weather forecast Day 3 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
Clear
3% Rain		 Clear
5% Rain		 Partly Cloudy
31% Rain		 Partly Cloudy
15% Rain		 Clear
9% Rain
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