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.

Fair

56°F

13°C

Humidity 79%
Wind Speed S 10 mph
Barometer 29.93 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 12 Apr 1:55 am CDT
Extended Forecast for

Grinnell Regional Airport IA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 57. South wind around 15 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 71. Windy, with a south southwest wind 16 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Windy. Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers between 7pm and 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 59. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 78 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Breezy, with a south southwest wind 9 to 17 mph, with gusts as high as 25 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 82. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 57. South wind around 15 mph, with gusts as high as 21 mph.
Sunday
Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 71. Windy, with a south southwest wind 16 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A slight chance of showers between 7pm and 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 59. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Breezy, with a south southwest wind 9 to 17 mph, with gusts as high as 25 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 82. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Wednesday
A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 53.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 58.
Friday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 76. Breezy. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 57. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
1:26 am CDT Apr 12, 2026
Forecast Valid:
2am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation