Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82° N Lon: 83.99° W Elev: 981 ft.

Partly Cloudy

88°F

31°C

Humidity 46%
Wind Speed W 12 mph
Barometer 29.93 in (1012.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 22 Aug 5:53 pm EDT
Detailed forecast for

Knox County

Rest Of Today
Sunny. Highs in the upper 80s. Light winds.
Tonight
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Patchy fog late. Lows in the mid 60s. Light winds. Chance of rain 20 percent.
Sunday
Mostly sunny. Highs in the upper 80s. Light winds.
Sunday Night
Partly cloudy. Lows in the lower 60s. Light winds.
Monday
Mostly sunny. Highs in the upper 80s. Light winds.
Monday Night
Partly cloudy. Lows in the lower 60s.
Tuesday
Sunny. Highs in the upper 80s.
Tuesday Night
Mostly clear. Lows in the mid 60s.
Wednesday
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 20 percent.
Wednesday Night
Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent.
Thursday
Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.
Thursday Night
Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent.
Friday
Mostly sunny. A slight chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.



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228 PM EDT Sat Aug 22 2026
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database