Severe Weather Threats Across the Plains; Dangerous Heat and Wildfire Concerns for the West; Watching the Tropics

Severe thunderstorms are expected across the Central Plains accompanied by damaging wind gusts and large hail. In addition, heavy rainfall may lead to instances of flash flooding from the Plains and mid-Atlantic regions. The heavy rainfall threat continues across Florida and across the northern Gulf as we monitor a tropical disturbance tracking westward. Critical fire weather for the Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

84°F

29°C

Humidity 64%
Wind Speed S 9 mph
Barometer 29.99 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 15 Jul 1:55 pm CDT
Extended Forecast for

Grinnell Regional Airport IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. South wind around 8 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 70. South southeast wind 3 to 5 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 85. South wind 6 to 9 mph becoming west in the afternoon.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 60. North northwest wind 6 to 8 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm.  Mostly cloudy, with a high near 73. North wind 8 to 10 mph.

    High: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 66. Chance of precipitation is 50%.

    Low: 66 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 87. South wind around 8 mph.
Tonight
Increasing clouds, with a low around 70. South southeast wind 3 to 5 mph.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 6 to 9 mph becoming west in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. North northwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 73. North wind 8 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 59.
Friday
Partly sunny, with a high near 79.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 68. Chance of precipitation is 40%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.69°N 92.75°W
12:42 pm CDT Jul 15, 2025
2pm CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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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