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
8:53 PM CST NOV 16, 2025
Clear
75°F
Feels Like: 75°F
Dewpoint: 72°F
Rel. Hum.: 90%
Visibility: 10 miles
Wind: SSE at 7 mph
Pressure: 29.88 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 11/16/2025
Sunday
16 NOV 2025		 PORT ISABEL, TX 78578 weather forecast Day 1, 12 hours 12 PM 85° 89° Clear 2%

 0% Thunder
( 9% severe)		 SSE   13 59% 69°
High 86° PORT ISABEL, TX 78578 weather forecast Day 1, 15 hours 3 PM 85° 89° Partly Cloudy SE   15 59% 69°
Partly Cloudy



 PORT ISABEL, TX 78578 weather forecast Day 1, 18 hours 6 PM 79° 82° Partly Cloudy 5%

 0% Thunder
( 6% severe)		 SE   13 77% 71°
PORT ISABEL, TX 78578 weather forecast Day 1, 21 hours 9 PM 75° 75° Partly Cloudy SSE   12 90% 72°
Monday
17 NOV 2025		 PORT ISABEL, TX 78578 weather forecast Day 2, 0 hours 12 AM 74° 74° Partly Cloudy 3%

 0% Thunder
( 6% severe)		 SSE   10 93% 72°
Low 70° PORT ISABEL, TX 78578 weather forecast Day 2, 3 hours 3 AM 73° 73° Partly Cloudy SSE   10 93% 71°
High 86° PORT ISABEL, TX 78578 weather forecast Day 2, 6 hours 6 AM 72° 72° Partly Cloudy 3%

 0% Thunder
( 6% severe)		 SSE   9 97% 71°

Partly Cloudy



 PORT ISABEL, TX 78578 weather forecast Day 2, 9 hours 9 AM 80° 84° Partly Cloudy SSE   14 79% 73°
PORT ISABEL, TX 78578 weather forecast Day 2, 12 hours 12 PM 85° 90° Partly Cloudy 2%

 0% Thunder
( 6% severe)		 SSE   17 63% 71°
PORT ISABEL, TX 78578 weather forecast Day 2, 15 hours 3 PM 84° 89° Partly Cloudy SE   20 65% 71°
PORT ISABEL, TX 78578 weather forecast Day 2, 18 hours 6 PM 78° 80° Clear 2%

 0% Thunder
( 6% severe)		 SE   16 82% 72°
PORT ISABEL, TX 78578 weather forecast Day 2, 21 hours 9 PM 76° 76° Partly Cloudy SE   15 87% 72°
Tuesday
18 NOV 2025		 PORT ISABEL, TX 78578 weather forecast Day 3, 0 hours 12 AM 75° 75° Partly Cloudy 5%

 0% Thunder
( 7% severe)		 SSE   13 90% 72°
Low 72° PORT ISABEL, TX 78578 weather forecast Day 3, 3 hours 3 AM 74° 74° Partly Cloudy SSE   12 93% 72°
High 87° PORT ISABEL, TX 78578 weather forecast Day 3, 6 hours 6 AM 73° 73° Partly Cloudy 3%

 0% Thunder
( 6% severe)		 SSE   10 93% 71°

Partly Cloudy



 PORT ISABEL, TX 78578 weather forecast Day 3, 9 hours 9 AM 80° 84° Partly Cloudy SSE   15 79% 73°
PORT ISABEL, TX 78578 weather forecast Day 3, 15 hours 12 PM 85° 91° Partly Cloudy 1%

 0% Thunder
( 9% severe)		 SSE   18 65% 72°
PORT ISABEL, TX 78578 weather forecast Day 3, 18 hours 3 PM 85° 91° Partly Cloudy SE   20 65% 72°
PORT ISABEL, TX 78578 weather forecast Day 3, 21 hours 6 PM 79° 82° Partly Cloudy     SE   15 82% 73°

PORT ISABEL, TX extended weather forecast
Wednesday
19 NOV 2025		 Thursday
20 NOV 2025		 Friday
21 NOV 2025		 Saturday
22 NOV 2025		 Sunday
23 NOV 2025
Low 76° Low 74° Low 74° Low 66° Low 67°
High 88° High 87° High 84° High 81° High 81°
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
22% Rain		 Overcast
29% Rain		 Overcast
38% Rain		 Partly Cloudy
49% Rain		 Partly Cloudy
33% Rain
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