National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Partly Cloudy

54°F

12°C

Humidity 97%
Wind Speed NE 3 mph
Barometer 30.00 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 22 Jun 3:55 am CDT
Extended Forecast for

Lynnville IA

  • Today

    Today: Mostly sunny, with a high near 77. Northeast wind 3 to 5 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 79. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 79 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60. South southeast wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 82. Calm wind becoming west northwest 5 to 8 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. Northeast wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 55. Calm wind.
Tuesday
Increasing clouds, with a high near 79. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60. South southeast wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 82. Calm wind becoming west northwest 5 to 8 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 56.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 90. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lynnville IA
 41.58°N 92.78°W
Last Update:
3:37 am CDT Jun 22, 2026
Forecast Valid:
4am CDT Jun 22, 2026-6pm CDT Jun 28, 2026
 
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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