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

33°F

1°C

Humidity 58%
Wind Speed Calm
Barometer 30.30 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 20 Apr 5:35 am CDT
Extended Forecast for

Grinnell IA

Freeze Warning April 20, 05:51am until April 20, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning April 20, 05:51am until April 20, 09:00am

    NOW until 9:00am Mon

    Freeze Warning

  • Today

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 50. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 50 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. West northwest wind around 5 mph becoming southeast in the evening.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. South wind 5 to 14 mph, with gusts as high as 20 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

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

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 74. Windy.

    High: 74 °F

    Windy. Partly
    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 48. Windy. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely and
    Windy

Detailed Forecast

Today
Sunny, with a high near 62. Light east southeast wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Increasing clouds, with a low around 50. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 52. West northwest wind around 5 mph becoming southeast in the evening.
Wednesday
Sunny, with a high near 79. South wind 5 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 74. Windy.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 48. Windy. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
4:12 am CDT Apr 20, 2026
Forecast Valid:
5am CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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