• Partly sunny 76°
    Hair Frizz Current Weather
    • Relative Humidity
      70%
    • Wind
      Speed
      5 mph
    • Dew
      Point
      65°
  • Today

    Sep 21

    Hi 84°

    A p.m. t-storm in spots

    Advisory for hair frizz
    • Wind
      Gust
      12 mph
    • Precip
      42%
    • Hours of Precip
      1.5
    Day Details >
  • Tomorrow

    Sep 22

    Hi 74°

    Mostly sunny

    Watch for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      14%
    • Hours of Precip
      0
    Day Details >
  • Tuesday

    Sep 23

    Hi 80°

    Partly sunny and pleasant

    Watch for hair frizz
    • Wind
      Gust
      5 mph
    • Precip
      0%
    • Hours of Precip
      0
    Day Details >
Next

Showers and a thunderstorm late this afternoon through early this evening

9/21 9/22 Now: 11:44am
AM 11-3
  • 11am Intermittent clouds 76° 1%
  • 12pm Partly sunny 79° 1%
  • 1pm Partly sunny 82° 4%
  • 2pm Mostly sunny 83° 14%
  • 3pm Mostly sunny 84° 14%
PM 10-3
  • 10pm Partly cloudy w/ t-storms 67° 51%
  • 11pm Partly cloudy 65° 38%
  • 12am Partly cloudy 63° 32%
  • 1am Partly cloudy 61° 28%
  • 2am Partly cloudy 60° 20%
  • 3am Partly cloudy 59° 20%
AM 4-9
  • 4am Partly cloudy 57° 20%
  • 5am Partly cloudy 55° 20%
  • 6am Partly cloudy 54° 20%
  • 7am Partly cloudy 54° 14%
  • 8am Intermittent clouds 55° 3%
  • 9am Partly sunny 57° 3%
Hourly Forecast >
Sep 20, 2014; 3:48 PM ET
A thundershower late tomorrow afternoon
Knoxville, TN Weather Forecast

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The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

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