Our Proprietary 10-Day Forecast

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Current warnings over San Juan, 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 San Juan, 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 San Juan, 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 Nueces 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 San Juan, 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 San Juan, 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 San Juan, 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 San Juan, 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 San Juan, 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 Nueces 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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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)
San Juan, Texas Climate Summary

General Climate

    •   San Juan has a humid subtropical climate, with hot, humid summers and mild winters.
    •   The average annual temperature is 74.6°F (23.7°C).
    •   The average annual precipitation is 26.7 inches (678 mm).

Summer

    •   The average summer temperature is 87.6°F (30.9°C).
    •   The average summer precipitation is 7.5 inches (191 mm).
    •   Summer days are typically hot and humid, with high temperatures in the 90s and low temperatures in the 70s.
    •   Summer nights are typically warm, with temperatures in the 70s.

Winter

    •   The average winter temperature is 54.6°F (12.6°C).
    •   The average winter precipitation is 2.9 inches (74 mm).
    •   Winter days are typically mild, with high temperatures in the 60s and low temperatures in the 40s.
    •   Winter nights are typically cool, with temperatures in the 30s.

Spring and Fall

    •   The average spring and fall temperatures are 70.6°F (21.4°C) and 64.6°F (18.1°C), respectively.
    •   The average spring and fall precipitation are 4.6 inches (117 mm) and 3.7 inches (94 mm), respectively.
    •   Spring and fall days are typically mild, with high temperatures in the 70s and 80s and low temperatures in the 50s and 60s.
    •   Spring and fall nights are typically cool, with temperatures in the 40s and 50s.

Extreme Weather

    •   San Juan is occasionally affected by tropical storms and hurricanes.
    •   The city is also prone to droughts and wildfires.

Climate Change

    •   The climate of San Juan is changing, with average temperatures rising and precipitation patterns becoming more variable.
    •   These changes are expected to continue in the future, with potentially significant impacts on the city's environment and economy.

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

    •   The Rio Grande, which borders San Juan, is home to over 100 fish species, including the endangered Rio Grande silvery minnow.

    •   The Lower Rio Grande Valley National Wildlife Refuge provides habitat for over 400 bird species, including the endangered aplomado falcon.

Science

    •   San Juan is home to the International Boundary and Water Commission (IBWC), which manages the Rio Grande and other water resources along the US-Mexico border.

    •   The city is also a hub for agricultural research, with the USDA's Vegetable Improvement Center located nearby.

Personalities

  • Juan Cortina:

    A Mexican revolutionary who led raids against Anglo settlers in the 1850s.

  • Doña Emilia Guerra:

    A Mexican-American landowner who played a key role in the development of San Juan.

  • Ricardo Romo:

    A historian and author who has written extensively about the history of San Juan and the Rio Grande Valley.

  • Tourist Attractions
    1.Resaca de la Palma State Park:

    A historic park that commemorates the Battle of Resaca de la Palma during the Mexican-American War. It features a museum, hiking trails, and a scenic lake.

    2.San Juan National Historic Site:

    The site of the first permanent European settlement in Texas, established by Spanish missionaries in 1736. It includes a restored mission church, a museum, and a living history program.

    3.Santa Cruz Valley Nature Preserve:

    A 1,000-acre preserve that protects the unique ecosystem of the Rio Grande Valley. It features hiking trails, a butterfly garden, and a birdwatching area.

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