| NWS Forecast for: Karnes County Issued by: National Weather Service Austin/San Antonio, TX Last Update: 1214 AM CDT Wed Sep 9 2026 | |
| Rest Of Tonight: Mostly clear. Lows in the mid 70s. Southeast winds 5 to 10 mph. Wednesday: Partly cloudy with a slight chance of showers and thunderstorms. Highs in the upper 90s. Southeast winds 5 to 10 mph. Chance of rain 20 percent. Highest heat index readings up to 106. Wednesday Night: Partly cloudy. Lows in the mid 70s. Southeast winds 5 to 10 mph. Thursday: Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Southeast winds 5 to 10 mph. Highest heat index readings up to 105. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southeast winds 5 to 10 mph. Friday Through Sunday: Mostly clear. Hot. Highs around 100. Lows in the upper 70s. Highest heat index readings up to 110. Sunday Night Through Monday Night: Partly cloudy. Hot. Lows in the upper 70s. Highs around 100. Highest heat index readings up to 110. Tuesday: Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Highest heat index readings up to 110. | |
| Zone Forecast: Karnes County | |
Visit your local NWS office at: https://www.weather.gov/ewx |