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

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Partly Cloudy

49°F

9°C

Humidity 82%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 19 May 10:15 pm CDT
Extended Forecast for

5 Miles SW Grinnell Regional Airport IA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 42. North wind 5 to 7 mph.

    Low: 42 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 63. North northeast wind 6 to 8 mph.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. East northeast wind 3 to 7 mph.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm.  Mostly cloudy, with a high near 63. East wind 8 to 10 mph, with gusts as high as 18 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am.  Cloudy, with a low around 46. East wind around 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 62. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 42. North wind 5 to 7 mph.
Wednesday
Sunny, with a high near 63. North northeast wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 44. East northeast wind 3 to 7 mph.
Thursday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 63. East wind 8 to 10 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers likely, mainly after 1am. Cloudy, with a low around 46. East wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 62. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 73.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 55.
Memorial Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Grinnell Regional Airport IA
 41.64°N 92.78°W
10:11 pm CDT May 19, 2026
10pm CDT May 19, 2026-6pm CDT May 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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