Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Cedar Rapids Airport (KCID)

Lat: 41.88°NLon: 91.72°WElev: 840ft.

Fair

64°F

18°C

Humidity 96%
Wind Speed S 3 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 17 Aug 10:52 pm CDT
Extended Forecast for

Mount Vernon IA

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms.  Cloudy, then gradually becoming mostly sunny, with a high near 79. Southwest wind 5 to 10 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly before midnight.  Partly cloudy, with a low around 63. West wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, with a high near 79. Calm wind becoming northeast around 5 mph.

    High: 79 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers after 1pm.  Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers before 1am.  Partly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 79. Southwest wind 5 to 10 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 63. West wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 79. Calm wind becoming northeast around 5 mph.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 62.
Friday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 81.
Friday Night
A 50 percent chance of showers before 1am. Partly cloudy, with a low around 63.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Mostly cloudy, with a low around 59.
Monday
Partly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IA
 41.93°N 91.43°W (Elev. 896 ft)
9:16 pm CDT Aug 17, 2026
11pm CDT Aug 17, 2026-6pm CDT Aug 24, 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