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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville (KOXV)

Lat: 41.3°NLon: 93.12°WElev: 928ft.

Fair

61°F

16°C

Humidity 94%
Wind Speed W 3 mph
Barometer 30.15 in
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 28 Aug 7:35 am CDT
Extended Forecast for

5 Miles NW Marysville IA

  • Today

    Today: Patchy fog before 9am. Otherwise, sunny, with a high near 85. Light southwest wind.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Light south southeast wind becoming south 5 to 9 mph in the evening.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers before 8am. Partly sunny, with a high near 87. Breezy, with a south wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 87 °F

    Slight Chance
    Showers then
    Partly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South wind around 15 mph, with gusts as high as 24 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 95. Breezy, with a south wind around 16 mph, with gusts as high as 25 mph.

    High: 95 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75.

    Low: 75 °F

    Mostly Clear
    then Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 85. Light southwest wind.
Tonight
Partly cloudy, with a low around 68. Light south southeast wind becoming south 5 to 9 mph in the evening.
Saturday
A 20 percent chance of showers before 8am. Partly sunny, with a high near 87. Breezy, with a south wind 9 to 17 mph, with gusts as high as 26 mph.
Saturday Night
Partly cloudy, with a low around 75. South wind around 15 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 95. Breezy, with a south wind around 16 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 95.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
A 30 percent chance of showers. Mostly clear, with a low around 73.
Wednesday
Mostly sunny, with a high near 95.
Wednesday Night
Partly cloudy, with a low around 75.
Thursday
Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Marysville IA
 41.23°N 93.02°W
Last Update:
6:31 am CDT Aug 28, 2026
Forecast Valid:
7am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation