Showers and Thunderstorms from the Southern Plains into the Mid-Mississippi Valley; Record Warmth in the Plains and Midwest

Heavy rain and widely scattered severe storms capable of large hail, damaging winds, and possibly a tornado are expected over portions of the central and southern Plains into the Lower Missouri Valley. Unseasonable warmth will continue for a few more days across the Midwest and Southeast 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

61°F

16°C

Humidity 75%
Wind Speed N 3 mph
Barometer 30.01 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Oct 1:15 am CDT
Extended Forecast for

Grinnell IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 54. North wind around 9 mph.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 66. Northeast wind around 8 mph.

    High: 66 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am.  Cloudy, with a low around 53. East wind 5 to 7 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm.  High near 64. East wind 5 to 8 mph becoming north in the afternoon.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 56. Windy.

    High: 56 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: Widespread frost, mainly after 5am.  Otherwise, mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am.  Otherwise, sunny, with a high near 60.

    High: 60 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. North wind around 9 mph.
Wednesday
Mostly cloudy, with a high near 66. Northeast wind around 8 mph.
Wednesday Night
A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 53. East wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm. High near 64. East wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Mostly cloudy, with a low around 43. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 56. Windy.
Friday Night
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 32.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 60.
Saturday Night
Clear, with a low around 41.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
10:46 pm CDT Oct 13, 2026
1am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
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Additional Resources

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