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

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

5 Miles SE Grinnell Regional Airport IA

Flood Watch until August 14, 01:00pm
Severe T-storm Watch August 13, 09:50am until August 13, 11:00am
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch until August 14, 01:00pm
    Severe T-storm Watch August 13, 09:50am until August 13, 11:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 80 °F

    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 83. East southeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers
    Likely then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Mostly cloudy, with a low around 69. East wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 87. South wind around 7 mph becoming west southwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.

    High: 82 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 80. East southeast wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 83. East southeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Mostly cloudy, with a low around 69. East wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 87. South wind around 7 mph becoming west southwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Sunday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Wednesday
Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Grinnell Regional Airport IA
 41.66°N 92.66°W
Last Update:
7:56 am CDT Aug 13, 2026
Forecast Valid:
9am CDT Aug 13, 2026-6pm CDT Aug 19, 2026
 
Forecast Discussion
 
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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