Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Overcast

53°F

12°C

Humidity 93%
Wind Speed NW 15 mph
Barometer 29.95 in (1014.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 19 May 7:53 am CDT
Extended Forecast for

Grundy Center IA

  • Today

    Today: A chance of sprinkles before 9am.  Mostly cloudy, with a high near 60. Breezy, with a northwest wind around 18 mph, with gusts as high as 25 mph.

    High: 60 °F

    Chance
    Sprinkles and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 40. North northwest wind 6 to 15 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 61. North northeast wind 6 to 9 mph.

    High: 61 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. East wind 5 to 7 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm.  Mostly cloudy, with a high near 61. East wind 10 to 13 mph, with gusts as high as 18 mph.

    High: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Cloudy, with a low around 44. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

Detailed Forecast

Today
A chance of sprinkles before 9am. Mostly cloudy, with a high near 60. Breezy, with a northwest wind around 18 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 40. North northwest wind 6 to 15 mph, with gusts as high as 20 mph.
Wednesday
Increasing clouds, with a high near 61. North northeast wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 44. East wind 5 to 7 mph.
Thursday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East wind 10 to 13 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 44. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 62.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 72.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 57.
Memorial Day
Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
6:46 am CDT May 19, 2026
8am CDT May 19, 2026-6pm CDT May 25, 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