| NWS Forecast for: Karnack TX Issued by: National Weather Service Shreveport, LA Last Update: 6:30 am CDT Sep 14, 2026 |  |
Today: Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming south around 5 mph in the afternoon. Tonight: Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm. Tuesday: Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming south around 5 mph. Tuesday Night: Mostly clear, with a low around 75. Calm wind. Wednesday: Mostly sunny and hot, with a high near 99. Calm wind becoming southeast around 5 mph in the afternoon. Wednesday Night: Partly cloudy, with a low around 75. Thursday: Sunny and hot, with a high near 98. Thursday Night: Mostly clear, with a low around 71. Friday: Sunny and hot, with a high near 98. Friday Night: Mostly clear, with a low around 70. Saturday: Sunny and hot, with a high near 98. Saturday Night: Mostly clear, with a low around 72. Sunday: A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 96. | |
| Karnack TX 32.63°N 94.14°W (Elev. 223 ft) | |
Visit your local NWS office at: https://www.weather.gov/shv |
