Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Light Rain

38°F

3°C

Humidity 95%
Wind Speed SE 12 mph
Barometer 29.88 in
Dewpoint 37°F (3°C)
Visibility 0.50 mi
Wind Chill30°F (-1°C)
Last update 27 Dec 5:55 am CST
Extended Forecast for

Hartwick IA

Dense Fog Advisory December 27, 06:03am until December 27, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 27, 06:03am until December 27, 12:00pm

    NOW until 12:00pm Sat

    Dense Fog Advisory

  • Today

    High: 48 °F

    Areas Dense
    Fog

  • Tonight

    Tonight: A slight chance of rain before 3am, then a chance of rain after 5am.  Patchy fog.  Otherwise, cloudy, with a low around 42. Southeast wind 5 to 8 mph becoming light and variable.  Chance of precipitation is 30%.

    Low: 42 °F

    Patchy Fog
    then Chance
    Rain and
    Areas Fog

  • Sunday

    Sunday: Rain before 1pm, then rain and snow between 1pm and 3pm, then snow, possibly mixed with sleet after 3pm.  Patchy blowing snow after 3pm. Areas of fog before 7am. Temperature falling to around 22 by 5pm. Wind chill values as low as 5. Windy, with a south wind 7 to 12 mph becoming northwest 18 to 28 mph in the morning. Winds could gust as high as 43 mph.  Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.

    High: 42 °F

    Rain and
    Areas Fog
    then Wintry
    Mix and
    Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow before midnight.  Mostly cloudy, with a low around 9. Wind chill values as low as -10. Windy, with a west northwest wind 28 to 30 mph, with gusts as high as 45 mph.  New snow accumulation of less than a half inch possible.

    Low: 9 °F

    Windy. Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 16. Windy, with a northwest wind 18 to 26 mph, with gusts as high as 40 mph.

    High: 16 °F

    Partly Sunny
    and Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 7. Blustery.

    Low: 7 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Today
Patchy dense fog between noon and 2pm. Otherwise, cloudy, with a high near 48. Southeast wind 7 to 10 mph, with gusts as high as 20 mph.
Tonight
A slight chance of rain before 3am, then a chance of rain after 5am. Patchy fog. Otherwise, cloudy, with a low around 42. Southeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.
Sunday
Rain before 1pm, then rain and snow between 1pm and 3pm, then snow, possibly mixed with sleet after 3pm. Patchy blowing snow after 3pm. Areas of fog before 7am. Temperature falling to around 22 by 5pm. Wind chill values as low as 5. Windy, with a south wind 7 to 12 mph becoming northwest 18 to 28 mph in the morning. Winds could gust as high as 43 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.
Sunday Night
A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 9. Wind chill values as low as -10. Windy, with a west northwest wind 28 to 30 mph, with gusts as high as 45 mph. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 16. Windy, with a northwest wind 18 to 26 mph, with gusts as high as 40 mph.
Monday Night
Mostly clear, with a low around 7. Blustery.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Partly sunny, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 7.
New Year's Day
Sunny, with a high near 15.
Thursday Night
Mostly clear, with a low around 3.
Friday
Sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
Hartwick IA
 41.79°N 92.34°W
3:46 am CST Dec 27, 2025
6am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
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