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
6:53 AM CDT APR 4, 2026
Clear 75°F
Feels Like:	75°F
Dewpoint:	72°F
Rel. Hum.:	90%
Visibility:	10 miles
Wind:	SE at 13 mph
Pressure:	29.93 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 4/ 3/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
4 APR 2026

12 AM

75°

75°

Mostly Cloudy

9%

0% Thunder
( 5% severe)

SE 15

87%

71°

Low 72°

3 AM

74°

74°

Mostly Cloudy

SSE 13

87%

70°

High 87°

6 AM

73°

73°

Mostly Cloudy

2%

0% Thunder
( 2% severe)

SE 10

87%

69°

Mostly Cloudy

9 AM

79°

82°

Mostly Cloudy

SSE 14

74%

70°

12 PM

84°

88°

Partly Cloudy

4%

0% Thunder
( 5% severe)

SE 16

61%

69°

3 PM

84°

89°

Partly Cloudy

ESE 17

65%

71°

6 PM

79°

82°

Partly Cloudy

34%
RAIN
<.01 in

0% Thunder
( 11% severe)

ESE 13

79%

72°

9 PM

75°

75°

Partly Cloudy

E 9

90%

72°

Sunday
5 APR 2026

12 AM

74°

74°

Mostly Cloudy

73%
RAIN
***

0% Thunder
( 26% severe)

E 6

90%

71°

Low 68°

3 AM

73°

73°

Mostly Cloudy

E 5

90%

70°

High 76°

6 AM

71°

71°

Mostly Cloudy

87%
RAIN
***

0% Thunder
( 22% severe)

NNE 8

90%

68°

Mostly Cloudy

Rain Likely

9 AM

72°

72°

Mostly Cloudy

NNE 14

87%

68°

12 PM

73°

73°

Mostly Cloudy

83%
RAIN
***

0% Thunder
( 19% severe)

N 18

81%

67°

3 PM

72°

72°

Mostly Cloudy

N 20

81%

66°

6 PM

67°

67°

Mostly Cloudy

83%
RAIN
***

0% Thunder
( 19% severe)

N 18

87%

63°

9 PM

65°

65°

Mostly Cloudy

N 16

90%

62°


PORT ISABEL, TX extended weather forecast
Monday 6 APR 2026	Tuesday 7 APR 2026	Wednesday 8 APR 2026	Thursday 9 APR 2026	Friday 10 APR 2026
Low 61°	Low 61°	Low 66°	Low 69°	Low 72°
High 67°	High 73°	High 80°	High 82°	High 84°

Overcast 81% Rain	Overcast 60% Rain	Overcast 41% Rain	Overcast 33% Rain	Overcast 29% Rain

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