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

Dangerous Heat Wave Continues; Areas of Severe Thunderstorms Today

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing on the eastern U.S. through the Independence Day weekend. Peak heat indices of up to 115 degrees are possible. Strong to severe thunderstorms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians today. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

87°F

31°C

Humidity 60%
Wind Speed S 13 G 21 mph
Barometer 29.95 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 2 Jul 6:15 pm CDT
Extended Forecast for

2 Miles E Chelsea IA

Severe T-storm Watch July 2, 06:30pm until July 2, 09:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch July 2, 06:30pm until July 2, 09:00pm

    NOW until 9:00pm Thu

    Severe T-storm Watch

  • Tonight

    Low: 69 °F

    Severe
    Thunderstorms
    then Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly before noon. Partly sunny, with a high near 90. East southeast wind 5 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 68. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Independence Day

    Independence Day: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. South wind 5 to 7 mph becoming west southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 65. West northwest wind around 5 mph becoming calm in the evening. 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

  • Sunday

    Sunday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 11pm, then showers likely and possibly a thunderstorm after 4am. Some of the storms could be severe. Partly cloudy, with a low around 69. South southwest wind 6 to 11 mph becoming light and variable. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely, mainly before noon. Partly sunny, with a high near 90. East southeast wind 5 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 68. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Independence Day
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. South wind 5 to 7 mph becoming west southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 65. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Sunny, with a high near 89.
Wednesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 66.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Chelsea IA
 41.92°N 92.36°W
Last Update:
6:13 pm CDT Jul 2, 2026
Forecast Valid:
6pm CDT Jul 2, 2026-6pm CDT Jul 9, 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