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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Ionia County Airport (KY70)

Lat: 42.94°NLon: 85.06°WElev: 818ft.

Mostly Cloudy

68°F

20°C

Humidity 64%
Wind Speed NE 9 mph
Barometer 30.23 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Sep 5:35 pm EDT
Extended Forecast for

Ionia MI

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 51. East wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 65. East wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 65 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 5am, then showers likely. Low around 55. East wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 55 °F

    Showers
    Likely then
    Showers

  • Sunday

    Sunday: Showers likely, mainly before 7am. Mostly cloudy, with a high near 67. Northeast wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 49. Northeast wind 11 to 13 mph, with gusts as high as 28 mph.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 51. East wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 65. East wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
Showers and thunderstorms before 5am, then showers likely. Low around 55. East wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers likely, mainly before 7am. Mostly cloudy, with a high near 67. Northeast wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Mostly cloudy, with a low around 49. Northeast wind 11 to 13 mph, with gusts as high as 28 mph.
Monday
Mostly cloudy, with a high near 63.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 47.
Wednesday
A chance of showers before 2pm. Partly sunny, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 48.
Thursday
Partly sunny, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ionia MI
 42.98°N 85.07°W (Elev. 640 ft)
Last Update:
5:03 pm EDT Sep 18, 2026
Forecast Valid:
5pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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