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.

Light Snow and Breezy

10°F

-12°C

Humidity 78%
Wind Speed W 21 G 25 mph
Barometer 30.12 in
Dewpoint 4°F (-16°C)
Visibility 1.00 mi
Wind Chill-9°F (-23°C)
Last update 17 Jan 1:15 pm CST
Extended Forecast for

Hartwick IA

  • This Afternoon

    This Afternoon: Snow likely before 4pm, then a chance of flurries between 4pm and 5pm. Patchy blowing snow before 5pm. Cloudy, with a high near 14. Wind chill values as low as -5. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

    High: 14 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 6. Wind chill values as low as -10. Blustery, with a northwest wind 7 to 16 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

    Low: 6 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Sunday

    Sunday: A slight chance of snow before 10am, then a chance of snow after noon. Mostly cloudy, with a high near 25. Wind chill values as low as -5. Windy, with a southwest wind 10 to 15 mph becoming northwest 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 25 °F

    Chance Snow
    and Windy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -1. Wind chill values as low as -20. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 38 mph.

    Low: -1 °F

    Mostly Cloudy
    and Windy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 11. Blustery, with a northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 11 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Snow likely before 4pm, then a chance of flurries between 4pm and 5pm. Patchy blowing snow before 5pm. Cloudy, with a high near 14. Wind chill values as low as -5. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.
Tonight
Mostly cloudy, with a low around 6. Wind chill values as low as -10. Blustery, with a northwest wind 7 to 16 mph becoming southwest after midnight. Winds could gust as high as 24 mph.
Sunday
A slight chance of snow before 10am, then a chance of snow after noon. Mostly cloudy, with a high near 25. Wind chill values as low as -5. Windy, with a southwest wind 10 to 15 mph becoming northwest 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around -1. Wind chill values as low as -20. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 38 mph.
M.L.King Day
Mostly sunny, with a high near 11. Blustery, with a northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 3.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 24.
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ABOUT THIS FORECAST

 
Point Forecast:
Hartwick IA
 41.79°N 92.34°W
Last Update:
11:12 am CST Jan 17, 2026
Forecast Valid:
1pm CST Jan 17, 2026-6pm CST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation