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.

Partly Cloudy

74°F

23°C

Humidity 74%
Wind Speed NE 9 mph
Barometer 29.94 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 19 Aug 7:35 pm CDT
Extended Forecast for

4 Miles W Chelsea IA

  • Tonight

    Tonight: Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 81. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 63. Calm wind becoming south southwest around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 83. Light and variable wind becoming west northwest 5 to 7 mph in the morning.

    High: 83 °F

    Slight Chance
    T-storms then
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 62. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

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

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 81. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 63. Calm wind becoming south southwest around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 83. Light and variable wind becoming west northwest 5 to 7 mph in the morning.
Friday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 62. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 58.
Sunday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Chelsea IA
 41.92°N 92.48°W
Last Update:
5:43 pm CDT Aug 19, 2026
Forecast Valid:
7pm CDT Aug 19, 2026-6pm CDT Aug 26, 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