National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Robert R Wells Jr Airport (K66R)

Lat: 29.64°NLon: 96.52°WElev: 242ft.

Fair

74°F

23°C

Humidity 97%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 31 Aug 5:55 am CDT
Extended Forecast for

Hallettsville TX

  • Today

    Today: Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming east around 5 mph in the afternoon.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph in the morning.

    High: 98 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 98. Light south wind becoming south southeast 5 to 10 mph in the afternoon.

    High: 98 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph becoming light south southeast after midnight.

    Low: 74 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 98. Light southeast wind increasing to 5 to 10 mph in the afternoon.

    High: 98 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming east southeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph in the morning.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 98. Light south wind becoming south southeast 5 to 10 mph in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph becoming light south southeast after midnight.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 98. Light southeast wind increasing to 5 to 10 mph in the afternoon.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 74.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Saturday Night
A 20 percent chance of showers. Mostly clear, with a low around 74.
Sunday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hallettsville TX
 29.44°N 96.91°W (Elev. 243 ft)
Last Update:
5:42 am CDT Aug 31, 2026
Forecast Valid:
6am CDT Aug 31, 2026-6pm CDT Sep 6, 2026
 
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