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

61°F

16°C

Humidity 86%
Wind Speed SW 7 mph
Barometer 30.03 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Jun 10:15 pm CDT
Extended Forecast for

4 Miles NNE Hartwick IA

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 11pm. Partly cloudy, with a low around 55. West wind 3 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Light northwest wind.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 56. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 4pm, then showers likely. Some of the storms could produce heavy rainfall. High near 71. East wind 8 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 71 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Northeast wind 8 to 14 mph, with gusts as high as 22 mph. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly before 11pm. Partly cloudy, with a low around 55. West wind 3 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 81. Light northwest wind.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 56. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm before 4pm, then showers likely. Some of the storms could produce heavy rainfall. High near 71. East wind 8 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Northeast wind 8 to 14 mph, with gusts as high as 22 mph. New precipitation amounts between a quarter and half of an inch possible.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 55.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Hartwick IA
 41.85°N 92.34°W
Last Update:
7:47 pm CDT Jun 19, 2026
Forecast Valid:
10pm CDT Jun 19, 2026-6pm CDT Jun 26, 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