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.

Fair

43°F

6°C

Humidity 38%
Wind Speed NW 17 G 24 mph
Barometer 30.01 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 13 Mar 4:55 pm CDT
Extended Forecast for

Grinnell IA

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

  • Tonight

    Tonight: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29. Blustery, with a northwest wind 11 to 16 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 29 °F

    Mostly Cloudy
    and Blustery
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 7am. Partly sunny, with a high near 47. Breezy, with an east southeast wind 7 to 17 mph, with gusts as high as 24 mph. Little or no snow accumulation expected.

    High: 47 °F

    Chance Snow
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A 50 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 40. Breezy, with an east southeast wind 15 to 17 mph, with gusts as high as 26 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. Some thunder is also possible. Patchy blowing snow after 5pm. Temperature rising to near 48 by 8am, then falling to around 34 during the remainder of the day. Windy, with a south southeast wind 17 to 22 mph becoming north northwest 28 to 33 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 48 °F⇓

    Rain and
    Windy then
    Rain/Snow and
    Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 1am. Widespread blowing snow, mainly after 8pm. Low around 8. Very windy, with a north northwest wind 32 to 37 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 8 °F

    Snow and
    Blowing Snow

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Areas of blowing snow before 8am. Partly sunny, with a high near 15. Windy.

    High: 15 °F

    Slight Chance
    Snow and
    Areas Blowing
    Snow

  • 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. Mostly sunny, with a high near 28.

    High: 28 °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 20.

    Low: 20 °F

    Chance Snow

Detailed Forecast

Tonight
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29. Blustery, with a northwest wind 11 to 16 mph becoming light and variable. Winds could gust as high as 20 mph.
Saturday
A 30 percent chance of snow, mainly before 7am. Partly sunny, with a high near 47. Breezy, with an east southeast wind 7 to 17 mph, with gusts as high as 24 mph. Little or no snow accumulation expected.
Saturday Night
A 50 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 40. Breezy, with an east southeast wind 15 to 17 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain before 4pm, then snow. Some thunder is also possible. Patchy blowing snow after 5pm. Temperature rising to near 48 by 8am, then falling to around 34 during the remainder of the day. Windy, with a south southeast wind 17 to 22 mph becoming north northwest 28 to 33 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Sunday Night
Snow, mainly before 1am. Widespread blowing snow, mainly after 8pm. Low around 8. Very windy, with a north northwest wind 32 to 37 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Monday
A 20 percent chance of snow before 1pm. Areas of blowing snow before 8am. Partly sunny, with a high near 15. Windy.
Monday Night
Mostly clear, with a low around 1. Windy.
Tuesday
A 20 percent chance of snow after 1pm. Mostly sunny, with a high near 28.
Tuesday Night
A 50 percent chance of snow before 1am. Mostly cloudy, with a low around 20.
Wednesday
Sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 57.
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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:
1:31 pm CDT Mar 13, 2026
Forecast Valid:
5pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation