| NWS Forecast for: Lavaca County Issued by: National Weather Service Austin/San Antonio, TX Last Update: 347 PM CDT Sun Aug 2 2026 | |
| Tonight: Clear. Lows in the mid 70s. Southeast winds around 5 mph, becoming southwest after midnight. Monday: Mostly sunny. Hot with highs around 100. South winds 5 to 10 mph. Monday Night: Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Tuesday: Partly cloudy in the morning, then becoming sunny. Humid with highs in the upper 90s. South winds 10 to 15 mph. Highest heat index readings up to 110. Tuesday Night: Clear with lows in the mid 70s. South winds 5 to 10 mph. Wednesday: Mostly sunny. Highs in the mid 90s. Highest heat index readings up to 110. Wednesday Night: Clear. Lows in the mid 70s. Thursday And Thursday Night: Mostly clear. Highs in the mid 90s. Lows in the mid 70s. Highest heat index readings up to 110. Friday: Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Highest heat index readings up to 105. Friday Night: Mostly clear. Lows in the mid 70s. Saturday: Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Highest heat index readings up to 105. Saturday Night: Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 70s. Sunday: Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Highest heat index readings up to 110. | |
| Zone Forecast: Lavaca County | |
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