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Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. 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 3 mph
Barometer 30.01 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 18 Aug 7:35 am CDT
Extended Forecast for

Castroville TX

  • Today

    Today: Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm after midnight.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Calm wind becoming east around 5 mph in the afternoon.

    High: 100 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny and hot, with a high near 99. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 50%.

    High: 99 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.

    High: 94 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East northeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 93. North wind around 5 mph becoming east northeast in the afternoon. Chance of precipitation is 60%.

    High: 93 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Calm wind becoming south southeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny and hot, with a high near 99. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East northeast wind around 5 mph becoming calm in the evening.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 93. North wind around 5 mph becoming east northeast in the afternoon. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 40%.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 74.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castroville TX
 29.36°N 98.87°W (Elev. 787 ft)
Last Update:
7:28 am CDT Aug 18, 2025
Forecast Valid:
7am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation