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

23°C

73°F

Humidity 76%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 18°C (65°F)
Visibility 16 km
Last update 13 Jul 9:35 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: Sunny, with a high near 27. Southwest wind 5 to 10 km/h.

    High: 27 °C

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 18. South southwest wind 5 to 8 km/h.

    Low: 18 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 31. South southwest wind 5 to 10 km/h.

    High: 31 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. South wind 5 to 8 km/h.

    Low: 19 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31. South wind 8 to 13 km/h.

    High: 31 °C

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 21.

    Low: 21 °C

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.

    High: 29 °C

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 17.

    Low: 17 °C

    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 26.

    High: 26 °C

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 27. Southwest wind 5 to 10 km/h.
Tonight
Mostly clear, with a low around 18. South southwest wind 5 to 8 km/h.
Monday
Sunny, with a high near 31. South southwest wind 5 to 10 km/h.
Monday Night
Mostly clear, with a low around 19. South wind 5 to 8 km/h.
Tuesday
Sunny, with a high near 31. South wind 8 to 13 km/h.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 21.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Mostly sunny, with a high near 26.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 18.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 27.
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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:
7:34 am CDT Jul 13, 2025
Forecast Valid:
9am CDT Jul 13, 2025-6pm CDT Jul 19, 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