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.

Overcast

63°F

17°C

Humidity 68%
Wind Speed NE 13 G 22 mph
Barometer 30.21 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 18 Sep 8:35 pm EDT
Extended Forecast for

Greenville MI

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 50. East wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 63. East wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 54. East wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 67. Northeast wind 11 to 14 mph, with gusts as high as 26 mph.

    High: 67 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 48. Northeast wind 11 to 13 mph, with gusts as high as 26 mph.

    Low: 48 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 62.

    High: 62 °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 61.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 50. East wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers and possibly a thunderstorm. High near 63. East wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 54. East wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 67. Northeast wind 11 to 14 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 48. Northeast wind 11 to 13 mph, with gusts as high as 26 mph.
Monday
Mostly cloudy, with a high near 62.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
Partly sunny, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 67.
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:
Greenville MI
 43.16°N 85.26°W (Elev. 801 ft)
Last Update:
8:03 pm EDT Sep 18, 2026
Forecast Valid:
8pm EDT Sep 18, 2026-6pm EDT Sep 25, 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