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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Ionia County Airport (KY70)

Lat: 42.94°NLon: 85.06°WElev: 818ft.

Light Rain

61°F

16°C

Humidity 88%
Wind Speed SW 14 G 18 mph
Barometer 29.63 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Jun 1:36 pm EDT
Extended Forecast for

Portland MI

  • This Afternoon

    This Afternoon: Showers, with thunderstorms also possible after 5pm. Some of the storms could produce heavy rainfall. High near 71. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 71 °F

    Heavy Rain

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 57. Southeast wind 14 to 17 mph becoming west southwest after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Heavy Rain
    then Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers between 10am and 1pm. Mostly cloudy, with a high near 70. West wind 16 to 18 mph, with gusts as high as 29 mph.

    High: 70 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53. West wind 7 to 13 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 72. West northwest wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Showers, with thunderstorms also possible after 5pm. Some of the storms could produce heavy rainfall. High near 71. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Showers and thunderstorms before 4am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 57. Southeast wind 14 to 17 mph becoming west southwest after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A 30 percent chance of showers between 10am and 1pm. Mostly cloudy, with a high near 70. West wind 16 to 18 mph, with gusts as high as 29 mph.
Thursday Night
Partly cloudy, with a low around 53. West wind 7 to 13 mph, with gusts as high as 24 mph.
Juneteenth
Sunny, with a high near 72. West northwest wind 9 to 16 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 53.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 73.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland MI
 42.86°N 84.91°W (Elev. 748 ft)
Last Update:
1:22 pm EDT Jun 17, 2026
Forecast Valid:
2pm EDT Jun 17, 2026-6pm EDT Jun 23, 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