Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville (KOXV)

Lat: 41.3°NLon: 93.12°WElev: 928ft.

Partly Cloudy

70°F

21°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 30.05 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 21 Aug 7:55 am CDT
Extended Forecast for

Knoxville IA

  • Today

    Today: Mostly sunny, with a high near 86. Southwest wind 7 to 10 mph becoming west northwest in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Northwest wind 3 to 6 mph.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. Light west northwest wind becoming north northwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60. North wind 5 to 7 mph becoming calm  after midnight.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 78. Light east northeast wind.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am.  Mostly cloudy, with a low around 62. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 86. Southwest wind 7 to 10 mph becoming west northwest in the afternoon.
Tonight
Partly cloudy, with a low around 65. Northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 82. Light west northwest wind becoming north northwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
Mostly clear, with a low around 60. North wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 78. Light east northeast wind.
Sunday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 62. New precipitation amounts of less than a tenth of an inch possible.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville IA
 41.32°N 93.11°W
6:51 am CDT Aug 21, 2026
8am CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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