Dangerous Heat and Possible Flooding
Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >
Current conditions at
Knoxville, McGhee Tyson Airport (KTYS)
Lat: 35.82°NLon: 83.99°WElev: 981ft.
A Few Clouds
84°F
29°C
| Humidity | 53% |
| Wind Speed | N 6 mph |
| Barometer | 30.03 in (1015.6 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 86°F (30°C) |
| Last update | 28 Aug 7:53 pm EDT |
Extended Forecast for
Knoxville TN
Tonight
Low: 67 °F
Mostly Clear
Saturday
High: 91 °F
Hot
Saturday Night
Low: 70 °F
Partly Cloudy
Sunday
High: 91 °F
Hot
Sunday Night
Low: 71 °F
Partly Cloudy
Monday
High: 92 °F
Hot
Monday Night
Low: 72 °F
Mostly Clear
Tuesday
High: 94 °F
Hot
Tuesday Night
Low: 73 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 67. Calm wind becoming northeast around 5 mph.
Saturday
Sunny and hot, with a high near 91. Heat index values as high as 95. Northeast wind around 5 mph becoming calm.
Saturday Night
Partly cloudy, with a low around 70. Calm wind.
Sunday
Sunny and hot, with a high near 91. Heat index values as high as 96. Calm wind.
Sunday Night
Partly cloudy, with a low around 71. Calm wind.
Monday
Sunny and hot, with a high near 92. Calm wind.
Monday Night
Mostly clear, with a low around 72. Calm wind.
Tuesday
Sunny and hot, with a high near 94.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94.
Thursday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Knoxville TN
35.96°N 83.94°W (Elev. 899 ft)
35.96°N 83.94°W (Elev. 899 ft)
7:06 pm EDT Aug 28, 2026
8pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
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