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.

Overcast

41°F

5°C

Humidity 81%
Wind Speed N 8 mph
Barometer 29.80 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 11 Mar 3:15 am CDT
Extended Forecast for

3 Miles NNW Hartwick IA

  • Overnight

    Overnight: A 20 percent chance of rain after 4am. Cloudy, with a steady temperature around 40. North wind around 13 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A chance of rain and snow before 11am, then a slight chance of rain between 11am and noon. Cloudy through mid morning, then gradual clearing, with a high near 42. Windy, with a north northwest wind 15 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 42 °F

    Windy. Chance
    Rain/Snow
    then Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Clear, with a low around 25. West wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 52. Windy, with a west wind 5 to 10 mph becoming south southwest 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 52 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Windy

  • Thursday Night

    Thursday Night: A chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 34. Windy, with a south wind 24 to 28 mph becoming west after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 34 °F

    Windy. Chance
    Rain then
    Chance
    Rain/Snow

  • Friday

    Friday: A 30 percent chance of snow before 7am. Partly sunny, with a high near 45. Windy.

    High: 45 °F

    Windy. Chance
    Snow then
    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Rain and snow likely, mainly after 1am. Cloudy, with a low around 32. Breezy. Chance of precipitation is 60%.

    Low: 32 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely and
    Breezy

Detailed Forecast

Overnight
A 20 percent chance of rain after 4am. Cloudy, with a steady temperature around 40. North wind around 13 mph, with gusts as high as 22 mph.
Wednesday
A chance of rain and snow before 11am, then a slight chance of rain between 11am and noon. Cloudy through mid morning, then gradual clearing, with a high near 42. Windy, with a north northwest wind 15 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday Night
Clear, with a low around 25. West wind 5 to 13 mph, with gusts as high as 22 mph.
Thursday
Increasing clouds, with a high near 52. Windy, with a west wind 5 to 10 mph becoming south southwest 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.
Thursday Night
A chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 34. Windy, with a south wind 24 to 28 mph becoming west after midnight. Winds could gust as high as 43 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday
A 30 percent chance of snow before 7am. Partly sunny, with a high near 45. Windy.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 30.
Saturday
Mostly cloudy, with a high near 49.
Saturday Night
Rain and snow likely, mainly after 1am. Cloudy, with a low around 32. Breezy. Chance of precipitation is 60%.
Sunday
Rain and snow likely, mainly before 1pm. Mostly cloudy, with a high near 39. Windy. Chance of precipitation is 70%.
Sunday Night
Mostly cloudy, with a low around 11. Windy.
Monday
Mostly sunny, with a high near 26. Blustery.
Monday Night
Mostly cloudy, with a low around 8.
Tuesday
Mostly cloudy, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Hartwick IA
 41.81°N 92.37°W
Last Update:
1:27 am CDT Mar 11, 2026
Forecast Valid:
3am CDT Mar 11, 2026-6pm CDT Mar 17, 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