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

62°F

17°C

Humidity 99%
Wind Speed SE 14 mph
Barometer 29.80 in
Dewpoint 62°F (17°C)
Visibility 7.00 mi
Last update 19 May 12:15 am CDT
Extended Forecast for

4 Miles NW Guernsey IA

  • Overnight

    Overnight: Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Low around 57. South southwest wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy, with a steady temperature around 61. Northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 41. North wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 63. Northeast wind 6 to 8 mph.

    High: 63 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43. East northeast wind 3 to 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Low around 57. South southwest wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy, with a steady temperature around 61. Northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 41. North wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday
Increasing clouds, with a high near 63. Northeast wind 6 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 43. East northeast wind 3 to 6 mph.
Thursday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 64.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 57.
Memorial Day
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Guernsey IA
 41.68°N 92.4°W
Last Update:
10:43 pm CDT May 18, 2026
Forecast Valid:
12am CDT May 19, 2026-6pm CDT May 25, 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