Weather forecast for 10 days
Port Isabel, TX

Weather forecast for the weekend

Saturday, May 3.

AM Thunderstorms
6:48 am

8:02 pm
CDT
AM Thunderstorms
81°F / 73°F
  • Wind: 14mph E
  • Humidity: 81%
  • Precip. probability: 50%
  • Precipitation: 0.31"
  • UV index: 7
On Saturday, in Port Isabel, cloudy skies with thunderstorms are expected in the morning hours.
The likelihood of rainfall is low, and light precipitation is anticipated. Temperature measurements will peak at a warm 80.6°F, with a slight decrease to a low of a temperate 73.4°F.
The predicted high temperature will align with April's average of 77.7°F.
Sunrise will be at 6:48 am and sunset at 8:02 pm; the daylight will last for 13h and 14min.

Sunday, May 4.

Scattered Thunderstorms
6:47 am

8:03 pm
CDT
Scattered Thunderstorms
81°F / 75°F
  • Wind: 15mph ESE
  • Humidity: 79%
  • Precip. probability: 48%
  • Precipitation: 0.16"
  • UV index: 10
On Sunday, in Port Isabel, scattered thunderstorms are likely to occur, particularly in the afternoon and evening.
The likelihood of rainfall is low, and light precipitation is forecasted. Slight changes in temperature are expected, reaching a high of a moderately hot 80.6°F and decreasing to a low of a warm 75.2°F.
The expected peak temperature will reflect the average April high of 77.7°F.
Sunrise will be at 6:47 am and sunset at 8:03 pm; the daylight will last for 13h and 16min.

Frequently asked questions

What is the weather forecast for Port Isabel for Saturday?
On Saturday, in Port Isabel, early thunderstorms may bring intense rain and flashes of lightning.
Will it rain on Saturday?
Light precipitation of 0.31" is predicted on Saturday. The possibility of rainfall is 50%.
What will be the highest temperature on Saturday?
On Saturday, the highest temperature will be 80.6°F, while the lowest temperature will be 73.4°F.
What is the weather forecast for Port Isabel for Sunday?
On Sunday, scattered thunderstorms are expected, with a chance of isolated heavy downpours.
Will it rain on Sunday?
Light precipitation of 0.16" is predicted on Sunday. The likelihood of rainfall is 48%.
What will be the highest temperature on Sunday?
On Sunday, the maximum temperature will be 80.6°F, while the minimum temperature will be 75.2°F.
What is the weather forecast for Port Isabel for the next ten days?
In Port Isabel, predominantly cloud-filled and occasionally lightning-active weather is expected for the next ten days.
Will it rain in the next ten days?
Rainfall is expected on Friday through Sunday in Port Isabel. Saturday, with light precipitation of 0.31", will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 80.6°F and 84.2°F, while the minimum temperature will be between 73.4°F and 77°F.
Taking the humidity into consideration, the maximum feel-like temperature will vary between 86°F and 93.2°F.
What will be the hottest and the coldest days?
The hottest days will be Wednesday through Friday, with a maximum of 84.2°F. With a maximum temperature of 80.6°F, Saturday, Sunday, next Wednesday and Thursday will be the coldest days in Port Isabel, Texas.

Long-term weather forecast

TueApr 29.
  • 82°F
  • 77°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Wind: 22mph SE
  • Humidity: 75%
  • UV index: 10
  • Precip. probability: 5%
  • Precipitation: 0"
  • 6:51 am 8:00 pm CDT
WedApr 30.
  • 84°F
  • 77°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Wind: 23mph SSE
  • Humidity: 75%
  • UV index: 11
  • Precip. probability: 15%
  • Precipitation: 0"
  • 6:50 am 8:01 pm CDT
ThuMay 1.
  • 84°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Wind: 17mph SE
  • Humidity: 77%
  • UV index: 11
  • Precip. probability: 13%
  • Precipitation: 0"
  • 6:49 am 8:01 pm CDT
FriMay 2.
  • 84°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 18mph SE
  • Humidity: 76%
  • UV index: 11
  • Precip. probability: 16%
  • Precipitation: 0.12"
  • 6:49 am 8:02 pm CDT
SatMay 3.
  • 81°F
  • 73°F
AM Thunderstorms
AM Thunderstorms
  • Wind: 14mph E
  • Humidity: 81%
  • UV index: 7
  • Precip. probability: 50%
  • Precipitation: 0.31"
  • 6:48 am 8:02 pm CDT
SunMay 4.
  • 81°F
  • 75°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 15mph ESE
  • Humidity: 79%
  • UV index: 10
  • Precip. probability: 48%
  • Precipitation: 0.16"
  • 6:47 am 8:03 pm CDT
MonMay 5.
  • 82°F
  • 77°F
Partly Cloudy
Partly Cloudy
  • Wind: 20mph ESE
  • Humidity: 78%
  • UV index: 11
  • Precip. probability: 17%
  • Precipitation: 0"
  • 6:47 am 8:03 pm CDT
TueMay 6.
  • 82°F
  • 75°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Wind: 21mph SE
  • Humidity: 79%
  • UV index: 10
  • Precip. probability: 24%
  • Precipitation: 0"
  • 6:46 am 8:04 pm CDT
WedMay 7.
  • 81°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 19mph E
  • Humidity: 79%
  • UV index: 10
  • Precip. probability: 24%
  • Precipitation: 0"
  • 6:45 am 8:05 pm CDT
ThuMay 8.
  • 81°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 15mph E
  • Humidity: 78%
  • UV index: 10
  • Precip. probability: 24%
  • Precipitation: 0"
  • 6:45 am 8:05 pm CDT
Forecasts for the ten-day outlook show that primarily overcast and occasionally unstable weather is anticipated.
Rainfall is anticipated on Friday through Sunday.
The high temperatures are expected to remain largely stable in the upcoming period. The maximum temperature will vary between 80.6°F and 84.2°F, while the nighttime low will be also mostly stable, as the minimum temperature will fluctuate between 73.4°F and 77°F.
Wednesday through Friday, with the highest temperature of 84.2°F, will be the hottest days in Port Isabel; Saturday, Sunday, next Wednesday and Thursday, with the highest temperature of 80.6°F, will be the coldest days in Port Isabel.
Combining with the humidity, the maximum feel-like temperature may increase and range between a humid 86°F and a tropical 93.2°F.
Updated: Apr 29, 2025 @ 15:08:31 UTC
Published by: Weather U.S. | About Us
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