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

Ionia County Airport (KY70)

Lat: 42.94°NLon: 85.06°WElev: 818ft.

Fair

61°F

16°C

Humidity 55%
Wind Speed S 8 mph
Barometer 29.83 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 17 Oct 9:55 pm EDT
Extended Forecast for

Portland MI

  • Tonight

    Tonight: A 10 percent chance of showers after 4am. Mostly cloudy, with a low around 55. South wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 73. South southwest wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 52. South southeast wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 52 °F

    Heavy Rain

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 5pm. Some of the storms could produce heavy rainfall. High near 61. Southwest wind 11 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 61 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 39. West northwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 39 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Showers likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly after 2pm. Partly sunny, with a high near 54.

    High: 54 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 10 percent chance of showers after 4am. Mostly cloudy, with a low around 55. South wind 11 to 13 mph, with gusts as high as 22 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 73. South southwest wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 52. South southeast wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday
Showers, with thunderstorms also possible after 5pm. Some of the storms could produce heavy rainfall. High near 61. Southwest wind 11 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 39. West northwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 60.
Monday Night
Showers likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly after 2pm. Partly sunny, with a high near 54.
Tuesday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 53.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Partly sunny, with a high near 55.
Thursday Night
A chance of showers. Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 56.
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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:
10:03 pm EDT Oct 17, 2025
Forecast Valid:
10pm EDT Oct 17, 2025-6pm EDT Oct 24, 2025
 
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