Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Castroville Municipal Airport (KCVB)

Lat: 29.34°NLon: 98.85°WElev: 771ft.

Fair

73°F

23°C

Humidity 100%
Wind Speed N 2 mph
Barometer 29.73 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Last update 17 Jun 7:35 am CDT
Extended Forecast for

2 Miles E Rio Medina TX

Extreme Heat Warning June 18, 12:00pm until June 18, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Today

    Today: Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming south around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 98. Heat index values as high as 111. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 98 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 78. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Increasing
    Clouds

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 94. East southeast wind 5 to 10 mph.

    High: 94 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph.  Chance of precipitation is 60%.

    Low: 75 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 91. South southeast wind 5 to 10 mph.

    High: 91 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 94. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 98. Heat index values as high as 111. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Increasing clouds, with a low around 78. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Juneteenth
Partly sunny, with a high near 94. East southeast wind 5 to 10 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South southeast wind 5 to 10 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 94. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Sunny, with a high near 96.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
Mostly sunny, with a high near 95.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Rio Medina TX
 29.43°N 98.84°W (Elev. 997 ft)
7:42 am CDT Jun 17, 2026
7am CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database