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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

77°F

25°C

Humidity 46%
Wind Speed S 15 mph
Barometer 29.86 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 6 Oct 5:55 pm CDT
Extended Forecast for

4 Miles NNE Hartwick IA

  • Tonight

    Tonight: Mostly clear, with a low around 55. Southwest wind 5 to 7 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 76. Northwest wind 3 to 7 mph.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. North northwest wind around 6 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

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

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 74.

    High: 74 °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 81.

    High: 81 °F

    Sunny

  • Saturday Night

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

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. Southwest wind 5 to 7 mph.
Wednesday
Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 76. Northwest wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 52. North northwest wind around 6 mph.
Thursday
Sunny, with a high near 70. North northwest wind around 5 mph becoming calm in the morning.
Thursday Night
Partly cloudy, with a low around 52. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 74.
Friday Night
Clear, with a low around 59.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 79.
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 55.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Hartwick IA
 41.85°N 92.34°W
Last Update:
5:57 pm CDT Oct 6, 2026
Forecast Valid:
5pm 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