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

32°F

0°C

Humidity 66%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 14 Mar 1:55 am CDT
Extended Forecast for

Grinnell Regional Airport IA

Winter Storm Watch March 15, 10:00am until March 16, 10:00am
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: A 20 percent chance of snow before 4am. Mostly cloudy, with a steady temperature around 32. Calm wind.

    Low: 32 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 49. Breezy, with an east southeast wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 49 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 40. Breezy, with an east southeast wind 16 to 18 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Breezy.
    Slight Chance
    Rain then
    Chance Rain

  • Sunday

    Sunday: Rain before 4pm, then snow, possibly mixed with sleet. Some thunder is also possible. Patchy blowing snow after 5pm. Temperature rising to near 53 by 10am, then falling to around 34 during the remainder of the day. Windy, with a south wind 14 to 19 mph becoming north northwest 25 to 30 mph in the afternoon. 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: 53 °F⇓

    Rain and
    Breezy then
    Wintry Mix
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow, possibly mixed with sleet, becoming all snow after 7pm. Widespread blowing snow, mainly after 10pm. Low around 7. Windy, with a north northwest wind 30 to 32 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow and sleet accumulation of 3 to 5 inches possible.

    Low: 7 °F

    Snow/Sleet
    and Blowing
    Snow

  • Monday

    Monday: Areas of blowing snow before 8am. Partly sunny, with a high near 17. Windy.

    High: 17 °F

    Windy. Areas
    Blowing Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 1. Blustery.

    Low: 1 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow after 1pm. Partly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow before 1am. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

Detailed Forecast

Overnight
A 20 percent chance of snow before 4am. Mostly cloudy, with a steady temperature around 32. Calm wind.
Saturday
Partly sunny, with a high near 49. Breezy, with an east southeast wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 40. Breezy, with an east southeast wind 16 to 18 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain before 4pm, then snow, possibly mixed with sleet. Some thunder is also possible. Patchy blowing snow after 5pm. Temperature rising to near 53 by 10am, then falling to around 34 during the remainder of the day. Windy, with a south wind 14 to 19 mph becoming north northwest 25 to 30 mph in the afternoon. 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
Snow, possibly mixed with sleet, becoming all snow after 7pm. Widespread blowing snow, mainly after 10pm. Low around 7. Windy, with a north northwest wind 30 to 32 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow and sleet accumulation of 3 to 5 inches possible.
Monday
Areas of blowing snow before 8am. Partly sunny, with a high near 17. Windy.
Monday Night
Mostly clear, with a low around 1. Blustery.
Tuesday
A 20 percent chance of snow after 1pm. Partly sunny, with a high near 29.
Tuesday Night
A 50 percent chance of snow before 1am. Mostly cloudy, with a low around 22.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Partly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
1:27 am CDT Mar 14, 2026
Forecast Valid:
2am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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