Severe Weather and Heavy Rainfall in the Midwest and Desert Southwest; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall are possible in the Midwest into the Central Appalachians and the Desert Southwest early this week. Storms are also expected in parts of the northern Plains today. Fire weather and air quality concerns will persist across portions of the West. Mid-summer heat will continue across much of the CONUS this week, especially in the the south-central High Plains. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

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

Mostly Cloudy

71°F

22°C

Humidity 96%
Wind Speed Calm
Barometer 30.19 in (1021.2 mb)
Dewpoint 70°F (21°C)
Visibility 7.00 mi
Last update 10 Aug 8:53 am EDT
Detailed forecast for

Knox County

Today
Mostly sunny. Highs in the lower 90s. Light winds.
Tonight
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Light winds.
Tuesday
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Light winds. Chance of rain 50 percent.
Tuesday Night
Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 70s. Light winds. Chance of rain 40 percent.
Wednesday
Showers likely with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs around 90. Southwest winds 10 mph or less. Chance of rain 60 percent.
Wednesday Night
Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 70s. Chance of rain 40 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 lower 90s. Chance of rain 40 percent. Heat index values around 105.
Thursday Night
Mostly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the mid 70s. Chance of rain 30 percent.
Friday
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 lower 90s. Chance of rain 40 percent.
Friday Night
Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the lower 70s. Chance of rain 20 percent.
Saturday
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent.
Saturday Night
Partly cloudy. Lows in the lower 70s.
Sunday
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.



Basemap Options
Click map to change the forecast location
Loading map...
706 AM EDT Mon Aug 10 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database