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 53%
Wind Speed E 16 G 22 mph
Barometer 30.03 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 14 Mar 12:55 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 a southeast wind 15 to 18 mph, with gusts as high as 26 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. Windy, with an east southeast wind 16 to 21 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

    Mostly Cloudy
    and Breezy
    then Chance
    Rain and
    Windy

  • 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 1. Windy.

    Low: 1 °F

    Mostly Clear
    and Windy
    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: Snow likely before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.

    Low: 21 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 49. Breezy, with a southeast wind 15 to 18 mph, with gusts as high as 26 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. Windy, with an east southeast wind 16 to 21 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 1. Windy.
Tuesday
A 20 percent chance of snow after 1pm. Partly sunny, with a high near 29.
Tuesday Night
Snow likely before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 49.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Partly sunny, with a high near 61.
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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:
11:44 am CDT Mar 14, 2026
Forecast Valid:
1pm CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation