| NWS Forecast for: Lavaca County Issued by: National Weather Service Austin/San Antonio, TX Last Update: 121 AM CDT Sat Aug 8 2026 |  |
| Rest Of Tonight: Mostly clear. Lows in the lower 70s. South winds around 5 mph. Saturday: Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Southeast winds 5 to 10 mph. Chance of rain 20 percent. Highest heat index readings up to 106. Saturday Night: Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Sunday: Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Southeast winds 5 to 10 mph. Highest heat index readings up to 107. Sunday Night: Mostly clear. Humid with lows in the mid 70s. Southeast winds 5 to 10 mph. Monday: Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Highest heat index readings up to 110. Monday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Tuesday: Mostly sunny. Highs in the upper 90s. Highest heat index readings up to 110. Tuesday Night: Clear. Lows in the mid 70s. Wednesday: Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 110. Wednesday Night: Clear. Lows in the mid 70s. Thursday: Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 110. Thursday Night: Clear. Lows in the upper 70s. Friday: Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 110. | |
| Zone Forecast: Lavaca County | |
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