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

66°F

19°C

Humidity 88%
Wind Speed Calm
Barometer 29.83 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 17 Jun 4:35 am CDT
Extended Forecast for

4 Miles SSE Chelsea IA

  • Today

    Today: Showers and thunderstorms likely, mainly after 4pm. Increasing clouds, with a high near 86. West wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then showers and possibly a thunderstorm between 2am and 4am, then showers and thunderstorms after 4am. Low around 65. North wind around 6 mph becoming light and variable. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers
    Likely then
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. East northeast wind 7 to 10 mph becoming north northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 78 °F

    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 60. North northwest wind 5 to 10 mph becoming light west northwest after midnight.

    Low: 60 °F

    Decreasing
    Clouds

  • Juneteenth

    Juneteenth: Sunny, with a high near 87. West wind 5 to 9 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 91. Breezy.

    High: 91 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Breezy.

    Low: 75 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 94. Breezy.

    High: 94 °F

    Sunny and
    Breezy

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 4pm. Increasing clouds, with a high near 86. West wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 2am, then showers and possibly a thunderstorm between 2am and 4am, then showers and thunderstorms after 4am. Low around 65. North wind around 6 mph becoming light and variable. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and thunderstorms before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. East northeast wind 7 to 10 mph becoming north northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 60. North northwest wind 5 to 10 mph becoming light west northwest after midnight.
Juneteenth
Sunny, with a high near 87. West wind 5 to 9 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.
Friday
Sunny, with a high near 91. Breezy.
Friday Night
Mostly clear, with a low around 75. Breezy.
Saturday
Sunny, with a high near 94. Breezy.
Saturday Night
Clear, with a low around 75.
Sunday
Sunny, with a high near 95. Breezy.
Sunday Night
Mostly clear, with a low around 74. Breezy.
Monday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Chelsea IA
 41.88°N 92.36°W
Last Update:
3:06 am CDT Jun 17, 2025
Forecast Valid:
4am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation