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Tropical Depression Nine in the Gulf of America; California October Heat Wave Continues

Tropical Depression Nine is forecast to track toward the central U.S. Gulf Coast while strengthening into a tropical storm by early Wednesday and a hurricane on Thursday. Stay tuned to forecast updates. Much higher than typical October temperatures will continue across much of California through midweek. Temperatures are forecast to gradually cool beginning Thursday in Coastal California. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

74°F

23°C

Humidity 52%
Wind Speed S 9 mph
Barometer 29.86 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 6 Oct 6:35 pm CDT
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, clear, with a low around 56. South southwest wind 5 to 10 mph.

    Low: 56 °F

    Clear then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 76. Northwest wind 5 to 7 mph.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. West wind around 6 mph becoming north after midnight.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. North wind around 5 mph becoming calm in the afternoon.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. Calm wind becoming southeast around 5 mph after midnight.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, clear, with a low around 56. South southwest wind 5 to 10 mph.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 76. Northwest wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 52. West wind around 6 mph becoming north after midnight.
Thursday
Sunny, with a high near 70. North wind around 5 mph becoming calm in the afternoon.
Thursday Night
Partly cloudy, with a low around 52. Calm wind becoming southeast around 5 mph after midnight.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 75.
Friday Night
Clear, with a low around 59.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 57.
Columbus Day
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.69°N 92.75°W
Last Update:
6:21 pm CDT Oct 6, 2026
Forecast Valid:
6pm CDT Oct 6, 2026-6pm CDT Oct 13, 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