Our Proprietary 10-Day Forecast

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Current warnings over Port Isabel, Texas
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Port Isabel, Texas red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Port Isabel, Texas red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Cameron County, TX

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Port Isabel, Texas

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Port Isabel, TX please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Port Isabel, TX

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Port Isabel, TX, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Port Isabel, Texas

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Cameron County, Texas

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Port Isabel, TX Climate Summary

Temperature

    •   Average annual temperature: 71.2°F (21.8°C)
    •   Average January temperature: 54.4°F (12.4°C)
    •   Average July temperature: 82.6°F (28.1°C)
    •   Record high temperature: 103°F (39.4°C)
    •   Record low temperature: 16°F (-8.9°C)

Precipitation

    •   Average annual precipitation: 27.69 inches (703.3 mm)
    •   Average number of rainy days: 84
    •   Wettest month: September (6.22 inches)
    •   Driest month: February (1.33 inches)

Humidity

    •   Average annual relative humidity: 77%
    •   Highest monthly relative humidity: September (82%)
    •   Lowest monthly relative humidity: May (71%)

Wind

    •   Average annual wind speed: 12.2 mph (19.6 km/h)
    •   Prevailing wind direction: northeast
    •   Strongest winds: December (14.2 mph)
    •   Calmest winds: August (10.2 mph)

Sunshine

    •   Average annual sunshine: 2,900 hours
    •   Sunniest month: July (330 hours)
    •   Cloudiest month: December (180 hours)

Climate Classification

    •   Köppen climate classification: Cfa (humid subtropical climate)

Overall

Port Isabel has a humid subtropical climate, with hot, humid summers and mild winters. The city receives a moderate amount of precipitation throughout the year, with the wettest months being September and October. Port Isabel is also prone to hurricanes and tropical storms, especially during the summer and fall months.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Port Isabel is a barrier island located at the southernmost tip of Texas, forming the southern boundary of the Laguna Madre, a shallow hypersaline lagoon.

    •   The island is home to a diverse ecosystem, including over 300 species of birds, numerous fish species, and marine mammals such as dolphins and sea turtles.

    •   The Port Isabel Lighthouse, built in 1852, is the only remaining lighthouse in Texas that is still in operation.

Science

    •   Port Isabel is a major center for marine research and education.

    •   The University of Texas Marine Science Institute is located on the island, conducting research on coastal ecosystems, fisheries, and oceanography.

    •   The Port Isabel Sea Life Center is a non-profit aquarium that showcases the marine life of the Gulf of Mexico.

Personalities

    •   José Nicolás Ballí, a Spanish explorer, established the first settlement on Port Isabel in 1766.

    •   The island was named after Queen Isabella II of Spain.

    •   Port Isabel played a significant role in the Civil War and the Mexican-American War.

Tourist Attractions
1.Port Isabel Lighthouse:

This historic lighthouse, built in 1852, offers panoramic views of the Gulf of Mexico and the surrounding area. Visitors can climb to the top of the lighthouse for a breathtaking perspective.

2.Schlitterbahn Waterpark:

Just a short drive from Port Isabel, Schlitterbahn is one of the largest and most popular waterparks in the United States. It features a wide range of water rides, slides, and attractions for all ages.

3.South Padre Island:

This barrier island, located just south of Port Isabel, is known for its beautiful beaches, clear waters, and abundant wildlife. Visitors can enjoy swimming, sunbathing, fishing, and birdwatching on South Padre Island.

Nearby Cities:

South Padre Island, TX
Laguna Heights, TXLaguna Vista, TX
Los Fresnos, TXSouth Point, TX
Laureles, TXOlmito, TX
Brownsville, TXRancho Viejo, TX
Green Valley Farms, TXCorpus Christi, TX
McAllen, TXEdinburg, TX
Mission, TXPharr, TX
Harlingen, TXWeslaco, TX
San Juan, TXKingsville, TX
San Benito, TXAlamo, TX
Mercedes, TX