Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

71°F

22°C

Humidity 100%
Wind Speed E 6 mph
Barometer 29.89 in (1011.3 mb)
Dewpoint 71°F (22°C)
Visibility 9.00 mi
Last update 21 Jul 5:53 am CDT
Extended Forecast for

Marshalltown IA

Heat Advisory until July 22, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 22, 08:00pm

    NOW until
    8:00pm Sat

    Heat Advisory

  • Today

    Today: Isolated showers and thunderstorms between 8am and 10am.  Partly sunny, with a high near 96. Heat index values as high as 107. Southeast wind 6 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Mostly Sunny

    High: 96 °F

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly between midnight and 2am.  Mostly cloudy, with a low around 75. South wind 9 to 11 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Scattered
    T-storms

    Low: 75 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 90. West southwest wind 7 to 10 mph becoming north northwest in the afternoon.

    Mostly Sunny

    High: 90 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 68. North northwest wind 5 to 8 mph becoming calm.

    Partly Cloudy

    Low: 68 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 86. North northwest wind 5 to 10 mph.

    Mostly Sunny

    High: 86 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 60.

    Mostly Clear

    Low: 60 °F

  • Monday

    Monday: Sunny, with a high near 80.

    Sunny

    High: 80 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 59.

    Mostly Clear

    Low: 59 °F

Detailed Forecast

Today
Isolated showers and thunderstorms between 8am and 10am. Partly sunny, with a high near 96. Heat index values as high as 107. Southeast wind 6 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly between midnight and 2am. Mostly cloudy, with a low around 75. South wind 9 to 11 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 90. West southwest wind 7 to 10 mph becoming north northwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 68. North northwest wind 5 to 8 mph becoming calm.
Sunday
Mostly sunny, with a high near 86. North northwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Marshalltown IA
 42.04°N 92.92°W
4:03 am CDT Jul 21, 2017
6am CDT Jul 21, 2017-6pm CDT Jul 27, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database