National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Light Rain

68°F

20°C

Humidity 89%
Wind Speed E 10 mph
Barometer 29.95 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 9 Jul 12:55 am CDT
Extended Forecast for

Deep River IA

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming west northwest. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 85. Light and variable wind becoming west around 6 mph in the morning. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. North wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 85. East northeast wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 65. East northeast wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming west northwest. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 85. Light and variable wind becoming west around 6 mph in the morning. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 65. North wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 85. East northeast wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 65. East northeast wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 65.
Monday
Sunny, with a high near 89.
Monday Night
Clear, with a low around 67.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Clear, with a low around 69.
Wednesday
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deep River IA
 41.57°N 92.34°W
Last Update:
11:44 pm CDT Jul 8, 2026
Forecast Valid:
1am CDT Jul 9, 2026-6pm CDT Jul 15, 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