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

62°F

17°C

Humidity 63%
Wind Speed S 7 mph
Barometer 29.62 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 17 Jun 1:55 am CDT
Extended Forecast for

5 Miles W Chelsea IA

  • Overnight

    Overnight: A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a steady temperature around 59. South southeast wind 6 to 8 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 3pm. Some of the storms could produce heavy rainfall. High near 81. Breezy, with a south southeast wind 11 to 18 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 81 °F

    Breezy. Heavy
    Rain then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. Windy, with a west northwest wind 20 to 25 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 40 mph.

    Low: 55 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 75. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

Overnight
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a steady temperature around 59. South southeast wind 6 to 8 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms, mainly before 3pm. Some of the storms could produce heavy rainfall. High near 81. Breezy, with a south southeast wind 11 to 18 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Mostly clear, with a low around 55. Windy, with a west northwest wind 20 to 25 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 40 mph.
Thursday
Sunny, with a high near 75. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Chelsea IA
 41.92°N 92.48°W
Last Update:
1:36 am CDT Jun 17, 2026
Forecast Valid:
2am CDT Jun 17, 2026-6pm CDT Jun 23, 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