Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

16°C

61°F

Humidity 51%
Wind Speed NE 7 km/h
Barometer 30.03 in
Dewpoint 6°C (43°F)
Visibility 16 km
Last update 18 May 11:35 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: Sunny, with a high near 22. East northeast wind 10 to 13 km/h.

    High: 22 °C

    Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am.  Increasing clouds, with a low around 9. Breezy, with an east wind 16 to 21 km/h increasing to 24 to 29 km/h after midnight. Winds could gust as high as 40 km/h.  New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Low: 9 °C

    Partly Cloudy
    then Chance
    T-storms and
    Breezy

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 18. Windy, with an east wind 35 to 37 km/h, with gusts as high as 50 km/h.  Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.

    High: 18 °C

    Showers
    Likely and
    Windy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm.  Low around 11. Windy, with an east wind around 35 km/h, with gusts as high as 48 km/h.  Chance of precipitation is 100%. New rainfall amounts between 3 and 4 cm possible.

    Low: 11 °C

    T-storms and
    Windy

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm.  High near 17. Windy, with an east wind 27 to 35 km/h, with gusts as high as 48 km/h.  Chance of precipitation is 100%. New rainfall amounts between 2 and 3 cm possible.

    High: 17 °C

    Showers and
    Windy

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 7. Breezy.  Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 7 °C

    Showers
    Likely and
    Breezy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms.  Mostly cloudy, with a high near 13. Chance of precipitation is 50%.

    High: 13 °C

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 1am.  Mostly cloudy, with a low around 6.

    Low: 6 °C

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 18.

    High: 18 °C

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 22. East northeast wind 10 to 13 km/h.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 9. Breezy, with an east wind 16 to 21 km/h increasing to 24 to 29 km/h after midnight. Winds could gust as high as 40 km/h. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Monday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 18. Windy, with an east wind 35 to 37 km/h, with gusts as high as 50 km/h. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.
Monday Night
Showers and possibly a thunderstorm. Low around 11. Windy, with an east wind around 35 km/h, with gusts as high as 48 km/h. Chance of precipitation is 100%. New rainfall amounts between 3 and 4 cm possible.
Tuesday
Showers and possibly a thunderstorm. High near 17. Windy, with an east wind 27 to 35 km/h, with gusts as high as 48 km/h. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 cm possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 7. Breezy. Chance of precipitation is 70%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 13. Chance of precipitation is 50%.
Wednesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 6.
Thursday
Mostly sunny, with a high near 18.
Thursday Night
Mostly clear, with a low around 6.
Friday
Mostly sunny, with a high near 20.
Friday Night
Partly cloudy, with a low around 9.
Saturday
Mostly sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
8:18 am CDT May 18, 2025
11am CDT May 18, 2025-6pm CDT May 24, 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