Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
High risk for severe weather in the central, eastern US. Get the forecast details. Chevron right
March megastorm: Blizzard, dangerous winds. Get the forecast. Chevron right

Port Isabel, TX

74°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Port Isabel

Texas

74°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Port Isabel, TX Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

2 AM

73°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

WindN 21 mph

Air QualityPoor

Wind Gusts25 mph

Humidity83%

Indoor Humidity83% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover62%

Visibility10 mi

Cloud Ceiling3700 ft

3 AM

70°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

WindN 28 mph

Air QualityPoor

Wind Gusts33 mph

Humidity75%

Indoor Humidity75% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover68%

Visibility10 mi

Cloud Ceiling4300 ft

4 AM

69°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

WindNNE 33 mph

Air QualityPoor

Wind Gusts43 mph

Humidity67%

Indoor Humidity67% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover73%

Visibility10 mi

Cloud Ceiling4900 ft

5 AM

66°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 5%
Chevron down
Mostly cloudy
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

WindNNE 36 mph

Air QualityFair

Wind Gusts44 mph

Humidity65%

Indoor Humidity61% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling5400 ft

6 AM

64°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 5%
Chevron down
Mostly cloudy
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

WindNNE 30 mph

Air QualityFair

Wind Gusts39 mph

Humidity64%

Indoor Humidity55% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling5800 ft

7 AM

63°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 3%
Chevron down
Cloudy
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

WindNNE 30 mph

Air QualityFair

Wind Gusts38 mph

Humidity61%

Indoor Humidity50% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6300 ft

8 AM

61°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™53°

WindN 29 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts35 mph

Humidity61%

Indoor Humidity47% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling9100 ft

9 AM

60°
RealFeel® 52°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™50°

WindN 32 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts38 mph

Humidity60%

Indoor Humidity45% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover72%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

62°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™54°

WindN 35 mph

Air QualityFair

Max UV Index3.3 (Moderate)

Wind Gusts41 mph

Humidity53%

Indoor Humidity43% (Ideal Humidity)

Dew Point45° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

63°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™55°

WindN 32 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts40 mph

Humidity49%

Indoor Humidity41% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

63°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday
alerts

Wind Advisory

10:00 PM Sunday - 1:00 PM Monday

RealFeel Shade™56°

WindN 31 mph

Air QualityFair

Max UV Index7.1 (High)

Wind Gusts40 mph

Humidity47%

Indoor Humidity40% (Ideal Humidity)

Dew Point43° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover50%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

63°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday

RealFeel Shade™56°

WindN 30 mph

Air QualityFair

Max UV Index7.9 (Very High)

Wind Gusts40 mph

Humidity45%

Indoor Humidity38% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover43%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

64°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday

RealFeel Shade™58°

WindN 29 mph

Air QualityFair

Max UV Index7.1 (High)

Wind Gusts38 mph

Humidity42%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover36%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

63°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday

RealFeel Shade™56°

WindN 28 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts36 mph

Humidity42%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover29%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

63°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday

RealFeel Shade™55°

WindNNE 27 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts33 mph

Humidity43%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover21%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

63°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday

RealFeel Shade™56°

WindNNE 25 mph

Air QualityFair

Max UV Index2.1 (Low)

Wind Gusts30 mph

Humidity42%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover14%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

62°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Red Flag Warning

10:00 PM Sunday - 7:00 PM Monday

RealFeel Shade™55°

WindNNE 24 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts29 mph

Humidity42%

Indoor Humidity34% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover7%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

62°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™55°

WindNNE 22 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts27 mph

Humidity43%

Indoor Humidity34% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

61°
RealFeel® 54°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNNE 20 mph

Air QualityFair

Wind Gusts23 mph

Humidity45%

Indoor Humidity35% (Slightly Dry)

Dew Point39° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover5%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

61°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNNE 17 mph

Air QualityFair

Wind Gusts21 mph

Humidity47%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

61°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNNE 16 mph

Air QualityFair

Wind Gusts18 mph

Humidity48%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover15%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

61°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNNE 15 mph

Air QualityFair

Wind Gusts18 mph

Humidity49%

Indoor Humidity38% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover21%

Visibility10 mi

Cloud Ceiling30000 ft

Further Ahead

Tomorrow

Wednesday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Strengthening March Megastorm to unleash powerful winds, blizzard

6 hours ago

Severe Weather

High risk for severe weather to erupt in the central, eastern US

2 hours ago

Climate

What to know about the potential for a super El Niño later this year

3 days ago

Weather Forecasts

Summerlike heat dome to send Southwest temperatures soaring past 100 F

16 hours ago

Severe Weather

Grapefruit-sized hailstone may set state record

4 days ago

 More Stories

Featured Stories

Weather News

Lightning strikes gas meter, sparking fire next to burn ban sign

2 days ago

Winter Weather

Nine states had their warmest winter ever recorded

4 days ago

Weather News

'Doomsday fish' rescued after washing ashore in Mexico

3 days ago

Recreation

'Quicksand alert' issued at National Park Service site

4 days ago

Severe Weather

Why nighttime tornadoes are 2.5 times more deadly

5 days ago
World North America United States Texas Port Isabel

Weather Near Port Isabel:

  • Brownsville, TX
  • Edinburg, TX
  • McAllen, TX
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...