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

53°F

12°C

Humidity 14%
Wind Speed NW 16 G 21 mph
Barometer 30.22 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 19 Apr 4:35 pm CDT
Extended Forecast for

Grinnell IA

Freeze Warning April 20, 12:00am until April 20, 09:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: Sunny, with a high near 54. West northwest wind around 15 mph, with gusts as high as 24 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 29. North northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 29 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 61. South southeast wind 5 to 15 mph, with gusts as high as 22 mph.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50. South wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 73. Windy.

    High: 73 °F

    Windy. Mostly
    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 54. West northwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
Clear, with a low around 29. North northwest wind 5 to 10 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 61. South southeast wind 5 to 15 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 50. South wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 79. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 52.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 73. Windy.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 47. Windy. Chance of precipitation is 70%.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 62. Breezy.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 61.
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 pm CDT Apr 19, 2026
Forecast Valid:
4pm CDT Apr 19, 2026-6pm CDT Apr 25, 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