October Heat Wave in California; Tropical Cyclone Possible in the Gulf

Much higher than typical October temperatures will continue across coastal southern California up through the Bay Area and Central Valley through midweek resulting in result in Major to Extreme HeatRisk. A tropical depression is likely to form over the Gulf of America during the middle part of this week with further strengthening possible as it moves northeastward later this week. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

78°F

26°C

Humidity 44%
Wind Speed S 14 mph
Barometer 29.87 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Oct 5:35 pm CDT
Extended Forecast for

4 Miles SSE Chelsea IA

  • Tonight

    Tonight: Mostly clear, with a low around 55. South southwest wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog between 8am and 9am.  Otherwise, sunny, with a high near 76. North northwest wind 3 to 6 mph.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Light west wind.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70. Light north wind.

    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 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. South southwest wind 5 to 8 mph becoming light and variable after midnight.
Wednesday
Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 76. North northwest wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 51. Light west wind.
Thursday
Sunny, with a high near 70. Light north wind.
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 58.
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 55.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Chelsea IA
 41.88°N 92.36°W
1:56 pm CDT Oct 6, 2026
5pm CDT Oct 6, 2026-6pm CDT Oct 13, 2026
 
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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