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 and Breezy

43°F

6°C

Humidity 43%
Wind Speed NW 22 G 29 mph
Barometer 29.98 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 13 Mar 3:35 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

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 45. Windy, with a west northwest wind around 21 mph, with gusts as high as 28 mph.

    High: 45 °F

    Mostly Sunny
    and Windy

  • Tonight

    Tonight: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29. Northwest wind 6 to 11 mph becoming light and variable.

    Low: 29 °F

    Mostly Cloudy
    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. High near 52. 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: 52 °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. Chance of precipitation is 80%.

    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: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 45. Windy, with a west northwest wind around 21 mph, with gusts as high as 28 mph.
Tonight
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29. Northwest wind 6 to 11 mph becoming light and variable.
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. High near 52. 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. Chance of precipitation is 80%.
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
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.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
1:31 pm CDT Mar 13, 2026
Forecast Valid:
3pm CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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