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

60°F

16°C

Humidity 84%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Jun 12:15 am CDT
Extended Forecast for

4 Miles N New Sharon IA

  • Overnight

    Overnight: Mostly clear, with a low around 54. Light west wind.

    Low: 54 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 79. Calm wind becoming west around 6 mph in the afternoon.

    High: 79 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 3am. Partly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 81. Calm wind.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 60. East wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 72. Breezy. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 72 °F

    Heavy Rain
    and Breezy

  • Sunday Night

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

    Low: 55 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Light west wind.
Juneteenth
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 79. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 3am. Partly cloudy, with a low around 58. Light and variable wind.
Saturday
Sunny, with a high near 81. Calm wind.
Saturday Night
Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 60. East wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 72. Breezy. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N New Sharon IA
 41.53°N 92.67°W
Last Update:
10:27 pm CDT Jun 18, 2026
Forecast Valid:
12am CDT Jun 19, 2026-6pm CDT Jun 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