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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Ionia County Airport (KY70)

Lat: 42.94°NLon: 85.06°WElev: 818ft.

Fog/Mist

52°F

11°C

Humidity 100%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 52°F (11°C)
Visibility 6.00 mi
Last update 28 Aug 6:15 am EDT
Extended Forecast for

Portland MI

  • Today

    Today: Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Light south wind.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 83. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 83 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65. South southwest wind around 6 mph.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 86. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 86 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 8am. Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Chance
    Showers then
    Mostly Sunny

Detailed Forecast

Today
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 80. Light and variable wind.
Tonight
Partly cloudy, with a low around 57. Light south wind.
Saturday
Increasing clouds, with a high near 83. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 65. South southwest wind around 6 mph.
Sunday
Mostly cloudy, with a high near 86. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 68.
Monday
Partly sunny, with a high near 89.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 71.
Tuesday
A chance of showers before 8am. Mostly sunny and hot, with a high near 90.
Tuesday Night
A chance of showers after 8pm. Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland MI
 42.88°N 84.9°W (Elev. 699 ft)
Last Update:
6:03 am EDT Aug 28, 2026
Forecast Valid:
6am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation