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

Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

70°F

21°C

Humidity 58%
Wind Speed N 10 mph
Barometer 30.42 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 1 Aug 11:55 am CDT
Extended Forecast for

4 Miles NNW Hartwick IA

  • This Afternoon

    This Afternoon: Areas of smoke. Mostly sunny, with a high near 76. East northeast wind around 8 mph.

    High: 76 °F

    Areas Smoke

  • Tonight

    Tonight: Areas of smoke. Partly cloudy, with a low around 55. East northeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Areas Smoke

  • Saturday

    Saturday: Mostly sunny, with a high near 75. Calm wind becoming east southeast around 5 mph.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
Areas of smoke. Mostly sunny, with a high near 76. East northeast wind around 8 mph.
Tonight
Areas of smoke. Partly cloudy, with a low around 55. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 75. Calm wind becoming east southeast around 5 mph.
Saturday Night
Partly cloudy, with a low around 54. Calm wind.
Sunday
Sunny, with a high near 76. Calm wind becoming southeast 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Hartwick IA
 41.83°N 92.39°W
Last Update:
10:20 am CDT Aug 1, 2025
Forecast Valid:
12pm CDT Aug 1, 2025-6pm CDT Aug 7, 2025
 
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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