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

Hazardous Weather Conditions

Current conditions at

Robert R Wells Jr Airport (K66R)

Lat: 29.64°NLon: 96.52°WElev: 242ft.

Fair

95°F

35°C

Humidity 48%
Wind Speed S 9 mph
Barometer 29.80 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 11 Sep 5:55 pm CDT
Extended Forecast for

Hallettsville TX

Heat Advisory September 12, 12:00pm until September 12, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 109. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southeast wind 5 to 10 mph becoming light south southeast after midnight. Winds could gust as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 99. Heat index values as high as 110. Light southeast wind increasing to 5 to 10 mph in the morning.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph becoming light south southeast after midnight.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Light east southeast wind becoming south southeast 5 to 10 mph in the morning.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Light southeast wind increasing to 5 to 10 mph in the morning.

    High: 100 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 109. South wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 76. Southeast wind 5 to 10 mph becoming light south southeast after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly sunny and hot, with a high near 99. Heat index values as high as 110. Light southeast wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph becoming light south southeast after midnight.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Light east southeast wind becoming south southeast 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Light southeast wind increasing to 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Thursday Night
Partly cloudy, with a low around 73.
Friday
A 20 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:
5:46 pm CDT Sep 11, 2026
Forecast Valid:
6pm CDT Sep 11, 2026-6pm CDT Sep 18, 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