National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Knoxville (KOXV)

Lat: 41.3°NLon: 93.12°WElev: 928ft.

Overcast

81°F

27°C

Humidity 84%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 25 Jul 1:55 pm CDT
Extended Forecast for

5 Miles NW Marysville IA

Extreme Heat Watch July 26, 09:00pm until July 27, 10:00pm
Extreme Heat Warning July 26, 12:00pm until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 91. Heat index values as high as 103. Southwest wind 3 to 5 mph.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Calm wind becoming south around 5 mph in the evening.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 8am. Mostly cloudy during the morning, then sunny during the afternoon and hot, with a high near 97. Heat index values as high as 112. South southwest wind 6 to 10 mph.

    High: 97 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Sunny, with a high near 96. Southwest wind 9 to 11 mph becoming west northwest in the morning.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 91. Heat index values as high as 103. Southwest wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 74. Calm wind becoming south around 5 mph in the evening.
Sunday
A 20 percent chance of showers and thunderstorms before 8am. Mostly cloudy during the morning, then sunny during the afternoon and hot, with a high near 97. Heat index values as high as 112. South southwest wind 6 to 10 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 96. Southwest wind 9 to 11 mph becoming west northwest in the morning.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 69.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Marysville IA
 41.23°N 93.02°W
Last Update:
1:26 pm CDT Jul 25, 2026
Forecast Valid:
2pm CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation