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Severe Thunderstorms and Heavy Rainfall; Typhoon Watch in Guam and CNMI

Heavy to excessive rainfall will continue through tonight from the Texas Big Bend region into southern Oklahoma. Scattered damaging wind gusts and a few tornadoes may accompany a line of severe thunderstorms that is expected across the Mid-Atlantic into New England Friday. A Typhoon Watch continues for Guam and CNMI as Tropical Storm Champi will strengthen and approach the islands this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

46°F

8°C

Humidity 84%
Wind Speed W 10 G 17 mph
Barometer 30.13 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 16 Oct 1:35 am CDT
Extended Forecast for

Grinnell IA

Freeze Warning October 17, 01:00am until October 17, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Overnight

    Overnight: Mostly clear early, then becoming mostly cloudy, with a low around 43. Breezy, with a west northwest wind 14 to 16 mph, with gusts as high as 29 mph.

    Low: 43 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: A slight chance of showers between 8am and 10am. Mostly cloudy, with a high near 52. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    High: 52 °F

    Windy. Slight
    Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.

    Low: 31 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57. Calm wind becoming south southwest 5 to 9 mph in the afternoon.

    High: 57 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38. South wind 6 to 9 mph.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Monday Night

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

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear early, then becoming mostly cloudy, with a low around 43. Breezy, with a west northwest wind 14 to 16 mph, with gusts as high as 29 mph.
Friday
A slight chance of showers between 8am and 10am. Mostly cloudy, with a high near 52. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Friday Night
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Saturday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57. Calm wind becoming south southwest 5 to 9 mph in the afternoon.
Saturday Night
Clear, with a low around 38. South wind 6 to 9 mph.
Sunday
Sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
Last Update:
1:26 am CDT Oct 16, 2026
Forecast Valid:
1am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation