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.

Mostly Cloudy

68°F

20°C

Humidity 53%
Wind Speed NW 18 G 25 mph
Barometer 30.07 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 14 Jun 1:35 pm CDT
Extended Forecast for

Lynnville IA

  • This Afternoon

    This Afternoon: Partly sunny, then gradually becoming sunny, with a high near 72. Breezy, with a north northwest wind 13 to 16 mph, with gusts as high as 24 mph.

    High: 72 °F

    Becoming
    Sunny and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 50. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 50 °F

    Increasing
    Clouds

  • Monday

    Monday: Increasing clouds, with a high near 77. Calm wind becoming west 5 to 9 mph in the morning.

    High: 77 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 57. Light southwest wind increasing to 5 to 9 mph in the evening.

    Low: 57 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Sunny, with a high near 77. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.

    High: 81 °F

    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59.

    Low: 59 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, then gradually becoming sunny, with a high near 72. Breezy, with a north northwest wind 13 to 16 mph, with gusts as high as 24 mph.
Tonight
Increasing clouds, with a low around 50. North northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Increasing clouds, with a high near 77. Calm wind becoming west 5 to 9 mph in the morning.
Monday Night
A 20 percent chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 57. Light southwest wind increasing to 5 to 9 mph in the evening.
Tuesday
Sunny, with a high near 77. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 56.
Wednesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 54.
Juneteenth
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 59.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 82.
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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:
1:27 pm CDT Jun 14, 2026
Forecast Valid:
1pm CDT Jun 14, 2026-6pm CDT Jun 20, 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