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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Ionia County Airport (KY70)

Lat: 42.94°NLon: 85.06°WElev: 818ft.

Light Rain

61°F

16°C

Humidity 72%
Wind Speed S 13 mph
Barometer 29.59 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 16 Jun 5:55 pm EDT
Extended Forecast for

Portland MI

Severe T-storm Watch June 16, 07:43pm until June 16, 11:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch June 16, 07:43pm until June 16, 11:00pm

    NOW until 11:00pm Tue

    Severe T-storm Watch

  • Tonight

    Low: 53 °F

    Showers
    Likely then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 5pm. High near 71. West southwest wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Partly Sunny
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 5am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 56. Southeast wind 11 to 16 mph becoming west southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 56 °F

    Heavy Rain
    then Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 70. West wind around 17 mph, with gusts as high as 30 mph.

    High: 70 °F

    Chance
    Showers

  • Thursday Night

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

    Low: 53 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 72.

    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

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. West southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 5pm. High near 71. West southwest wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and thunderstorms before 5am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 56. Southeast wind 11 to 16 mph becoming west southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday
A 30 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 70. West wind around 17 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, 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.
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. Mostly sunny, with a high near 75.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland MI
 42.86°N 84.91°W (Elev. 748 ft)
Last Update:
7:36 pm EDT Jun 16, 2026
Forecast Valid:
7pm EDT Jun 16, 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