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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

40°F

4°C

Humidity 81%
Wind Speed S 8 mph
Barometer 30.35 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 18 Oct 5:35 am CDT
Extended Forecast for

Hartwick IA

  • Today

    Today: Sunny, with a high near 66. South wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 41. South wind 3 to 8 mph.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66. South wind 3 to 5 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Light southeast wind.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 66. South wind 8 to 13 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 41. South wind 3 to 8 mph.
Monday
Sunny, with a high near 66. South wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 41. Light southeast wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming south southeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 75.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hartwick IA
 41.81°N 92.34°W
Last Update:
4:44 am CDT Oct 18, 2026
Forecast Valid:
5am CDT Oct 18, 2026-6pm CDT Oct 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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