Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

64°F

18°C

Humidity 90%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 26 Aug 10:35 pm CDT
Extended Forecast for

Deep River IA

  • Tonight

    Tonight: Clear, with a low around 60. Northwest wind 3 to 5 mph.

    Low: 60 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. North northwest wind 3 to 7 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. Calm wind becoming south 5 to 8 mph in the evening.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 97. Breezy.

    High: 97 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 60. Northwest wind 3 to 5 mph.
Thursday
Sunny, with a high near 82. North northwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 58. Calm wind.
Friday
Sunny, with a high near 84. Light and variable wind.
Friday Night
Partly cloudy, with a low around 65. Calm wind becoming south 5 to 8 mph in the evening.
Saturday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 87.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Sunday
Mostly sunny and hot, with a high near 97. Breezy.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Monday
Partly sunny, with a high near 95.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Deep River IA
 41.57°N 92.37°W
10:36 pm CDT Aug 26, 2026
10pm CDT Aug 26, 2026-6pm CDT Sep 2, 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