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.

Rain

58°F

14°C

Humidity 81%
Wind Speed SE 16 G 22 mph
Barometer 30.01 in
Dewpoint 52°F (11°C)
Visibility 7.00 mi
Last update 28 Apr 1:35 am CDT
Extended Forecast for

Grinnell IA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Cloudy, with a low around 54. Breezy, with a south southeast wind around 16 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 80. Windy, with a south wind 18 to 25 mph, with gusts as high as 37 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    T-storms and
    Windy

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 49. Windy, with a south southwest wind 17 to 25 mph, with gusts as high as 34 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Chance
    T-storms and
    Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64. Breezy, with a north northwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 45. North wind around 6 mph becoming light and variable.

    Low: 45 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Cloudy, with a low around 54. Breezy, with a south southeast wind around 16 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 80. Windy, with a south wind 18 to 25 mph, with gusts as high as 37 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 49. Windy, with a south southwest wind 17 to 25 mph, with gusts as high as 34 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 64. Breezy, with a north northwest wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 45. North wind around 6 mph becoming light and variable.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 69.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
Last Update:
10:17 pm CDT Apr 27, 2025
Forecast Valid:
1am CDT Apr 28, 2025-6pm CDT May 4, 2025
 
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