Severe Thunderstorms in the Central U.S.; Heavy to Excessive Rainfall in the Ohio Valley and Central Appalachians

Severe thunderstorms producing damaging winds, hail, and a few tornadoes are expected through Tuesday across parts of the central Plains and lower to mid Missouri Valley. Heavy to excessive rainfall could produce flooding across portions of the Ohio Valley into the Central Appalachians through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

72°F

22°C

Humidity 84%
Wind Speed SW 7 mph
Barometer 30.00 in (1014.5 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 17 Jun 4:53 am EDT
Extended Forecast for

4 Miles ESE Maryville TN

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 71. Southwest wind around 5 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after noon.  Mostly sunny, with a high near 87. Heat index values as high as 96. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 87 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 11pm.  Mostly cloudy, with a low around 71. Southwest wind 5 to 10 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    T-storms
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 2pm.  Partly sunny, with a high near 86. Southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    High: 86 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 8pm.  Partly cloudy, with a low around 71. South wind around 5 mph.  Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely then
    Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am.  High near 85. Southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%.

    High: 85 °F

    Showers
    Likely then
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am.  Low around 69. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Low: 69 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 87. Heat index values as high as 96. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Showers and thunderstorms likely, mainly before 11pm. Mostly cloudy, with a low around 71. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 86. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 60%.
Juneteenth
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 85. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Thursday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 68.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91.
Saturday Night
A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Sunday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 73.
Monday
A 40 percent chance of showers and thunderstorms. Sunny and hot, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Maryville TN
 35.71°N 83.91°W (Elev. 968 ft)
3:41 am EDT Jun 17, 2025
5am EDT Jun 17, 2025-6pm EDT Jun 23, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database