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

46°F

8°C

Humidity 48%
Wind Speed E 17 G 23 mph
Barometer 29.95 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 14 Mar 2:15 pm CDT
Extended Forecast for

Grinnell IA

Blizzard Warning March 15, 01:00pm until March 16, 07:00am
High Wind Warning March 15, 01:00pm until March 16, 04:00am
Click here for hazard details and duration
Blizzard Warning
High Wind Warning

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 49. Breezy, with an east southeast wind 16 to 18 mph, with gusts as high as 25 mph.

    High: 49 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: A slight chance of rain between 3am and 4am, then a chance of rain and thunderstorms after 4am. Mostly cloudy, with a low around 40. Breezy, with an east southeast wind 15 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Rain, snow, and sleet before 3pm, then snow, possibly mixed with rain. Some thunder is also possible. Patchy blowing snow after 4pm. Temperature rising to near 52 by 8am, then falling to around 31 during the remainder of the day. Very windy, with a south wind 17 to 27 mph becoming north 27 to 37 mph in the afternoon. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New snow and sleet accumulation of less than one inch possible.

    High: 52 °F⇓

    Rain and
    Windy then
    Wintry Mix
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 1am. Widespread blowing snow, mainly after 8pm. Low around 7. Wind chill values as low as -15. Very windy, with a north northwest wind 33 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 7 °F

    Snow and
    Blowing Snow

  • Monday

    Monday: Areas of blowing snow. Partly sunny, with a high near 16. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 39 mph.

    High: 16 °F

    Areas Blowing
    Snow and
    Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 2. Blustery.

    Low: 2 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 20 percent chance of snow after 1pm. Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °F

    Snow Likely

  • Wednesday

    Wednesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 49. Breezy, with an east southeast wind 16 to 18 mph, with gusts as high as 25 mph.
Tonight
A slight chance of rain between 3am and 4am, then a chance of rain and thunderstorms after 4am. Mostly cloudy, with a low around 40. Breezy, with an east southeast wind 15 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Rain, snow, and sleet before 3pm, then snow, possibly mixed with rain. Some thunder is also possible. Patchy blowing snow after 4pm. Temperature rising to near 52 by 8am, then falling to around 31 during the remainder of the day. Very windy, with a south wind 17 to 27 mph becoming north 27 to 37 mph in the afternoon. Winds could gust as high as 49 mph. Chance of precipitation is 100%. New snow and sleet accumulation of less than one inch possible.
Sunday Night
Snow, mainly before 1am. Widespread blowing snow, mainly after 8pm. Low around 7. Wind chill values as low as -15. Very windy, with a north northwest wind 33 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Monday
Areas of blowing snow. Partly sunny, with a high near 16. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 39 mph.
Monday Night
Mostly clear, with a low around 2. Blustery.
Tuesday
A 20 percent chance of snow after 1pm. Partly sunny, with a high near 30.
Tuesday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Wednesday
Sunny, with a high near 49.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Mostly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
1:32 pm CDT Mar 14, 2026
Forecast Valid:
2pm 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