Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

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. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

58°F

14°C

Humidity 95%
Wind Speed NW 5 mph
Barometer 30.08 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Aug 6:55 am CDT
Extended Forecast for

6 Miles WNW Hartwick IA

  • Today

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

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm.  Partly sunny, with a high near 85. South wind 8 to 13 mph, with gusts as high as 23 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 85 °F

    Chance
    Showers

  • Saturday Night

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

    Low: 70 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. North northwest wind 3 to 7 mph.
Tonight
Mostly clear, with a low around 57. Calm wind.
Friday
Sunny, with a high near 84. Calm wind.
Friday Night
Partly cloudy, with a low around 64. Calm wind becoming south 5 to 7 mph in the evening.
Saturday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 85. South wind 8 to 13 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
Mostly sunny, with a high near 91.
Monday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 89.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 88.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Hartwick IA
 41.81°N 92.45°W
6:31 am CDT Aug 27, 2026
7am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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