Weather forecast for: Hallettsville TX
Last Update: 2:44 am CDT Sep 6, 2026
Overnight: Partly cloudy, with a low around 74. Calm wind.
Sunday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 97. Heat index values as high as 107. Calm wind becoming east southeast around 5 mph.
Sunday Night: Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Labor Day: Sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind becoming east southeast around 5 mph.
Monday Night: Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm after midnight.
Tuesday: Sunny and hot, with a high near 100. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph becoming light and variable after midnight.
Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night: Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.
Thursday: Sunny, with a high near 98.
Thursday Night: Mostly clear, with a low around 74.
Friday: Sunny and hot, with a high near 100.
Friday Night: Mostly clear, with a low around 74.
Saturday: Mostly sunny and hot, with a high near 99.