Showers and Thunderstorms from the Southern Plains into the Ohio Valley; Record Warmth in the Central U.S.

Heavy rain and widely scattered severe storms are expected over portions of the central and southern Plains into the Ohio Valley. Unseasonable warmth will continue for a few more days across the Midwest, Southeast, and Mid-Atlantic where several daily record highs could fall. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Overcast

59°F

15°C

Humidity 82%
Wind Speed NE 3 mph
Barometer 30.11 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Oct 12:55 am CDT
Extended Forecast for

Grinnell IA

  • Overnight

    Overnight: A 40 percent chance of showers, mainly after 3am.  Cloudy, with a steady temperature around 58. East northeast wind around 6 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 4pm, then showers likely.  High near 61. Light and variable wind becoming northwest 5 to 9 mph in the afternoon.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly before 8pm.  Cloudy, then gradually becoming partly cloudy, with a low around 43. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 26 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 52. Windy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.

    High: 52 °F

    Mostly Cloudy
    and Windy

  • Friday Night

    Friday Night: Patchy frost after 3am.  Otherwise, mostly clear, with a low around 33. North northwest wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Partly Cloudy
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 9am.  Otherwise, sunny, with a high near 59.

    High: 59 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of showers, mainly after 3am. Cloudy, with a steady temperature around 58. East northeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers and possibly a thunderstorm before 4pm, then showers likely. High near 61. Light and variable wind becoming northwest 5 to 9 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A 30 percent chance of showers, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 43. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly cloudy, with a high near 52. Windy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.
Friday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 33. North northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Saturday
Areas of frost before 9am. Otherwise, sunny, with a high near 59.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Mostly sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
11:06 pm CDT Oct 14, 2026
12am CDT Oct 15, 2026-6pm CDT Oct 21, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database