| NWS Forecast for: Knoxville, McGhee Tyson Airport TN Issued by: National Weather Service Morristown, TN Last Update: 10:11 am EDT Sep 5, 2026 |  |
Today: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny and hot, with a high near 96. Heat index values as high as 106. Calm wind. Chance of precipitation is 20%. Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 72. North wind around 5 mph becoming calm. Chance of precipitation is 30%. Sunday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 100. Calm wind becoming north around 5 mph in the afternoon. Sunday Night: Partly cloudy, with a low around 69. Northeast wind 5 to 10 mph. Labor Day: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind. Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm. Tuesday: Sunny and hot, with a high near 91. Calm wind. Tuesday Night: Partly cloudy, with a low around 68. Wednesday: Sunny and hot, with a high near 92. Wednesday Night: Mostly clear, with a low around 70. Thursday: A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92. Thursday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. | |
| Knoxville, McGhee Tyson Airport TN 35.8°N 83.98°W (Elev. 955 ft) | |
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