Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Deep River IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86. Light west wind.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 4am, then a slight chance of thunderstorms after 5am.  Mostly cloudy, with a low around 69. West northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm.  Mostly sunny, with a high near 82. North northwest wind 5 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. North northwest wind 5 to 8 mph.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Light north northwest wind.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Light west wind.
Tonight
Showers and thunderstorms likely, mainly before 4am, then a slight chance of thunderstorms after 5am. Mostly cloudy, with a low around 69. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 82. North northwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 60. North northwest wind 5 to 8 mph.
Monday
Sunny, with a high near 81. Light north northwest wind.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.
Tuesday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.
Wednesday
Partly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Partly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Deep River IA
 41.57°N 92.37°W
4:57 pm CDT Aug 15, 2026
5pm CDT Aug 15, 2026-6pm CDT Aug 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database