Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fog/Mist

71°F

22°C

Humidity 88%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 68°F (20°C)
Visibility 5.00 mi
Last update 14 Jun 6:55 am CDT
Extended Forecast for

4 Miles WSW Chelsea IA

  • Today

    Today: Partly sunny, with a high near 85. Calm wind becoming east southeast 5 to 7 mph in the morning.

    High: 85 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 67. Southeast wind 3 to 6 mph.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 86. South wind 5 to 8 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. South southeast wind 3 to 6 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 89. South wind 5 to 9 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 68. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall.  Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Heavy Rain

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm.  Mostly cloudy, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely then
    T-storms
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 85. Calm wind becoming east southeast 5 to 7 mph in the morning.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 67. Southeast wind 3 to 6 mph.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86. South wind 5 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southeast wind 3 to 6 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. South wind 5 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63.
Juneteenth
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Chelsea IA
 41.9°N 92.48°W
6:35 am CDT Jun 14, 2025
6am CDT Jun 14, 2025-6pm CDT Jun 20, 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