Ionia County, MI Weather Forecast
County weather hub
Sunny
Compare major city weather across Ionia County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny. High near 77, with temperatures falling to around 74 in the afternoon. West wind around 17 mph, with gusts as high as 29 mph.
County Weather Overview
This county weather page brings together forecast coverage for Ionia County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 5 of 5 mapped cities in Ionia County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 4:47 PM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Ionia County
This Afternoon looks like the warmest upcoming period in Ionia County at 77 degrees F.
Friday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Friday at about 14 to 22 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 4:47 PM EDT
- Coverage
- 7 days
- Time zone
- America/Detroit
- Forecast office
- GRR
- Radar station
- KGRR
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers after 11pm. Partly cloudy. Low around 54, with temperatures rising to around 56 overnight. Northwest wind 2 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before 7am. Partly sunny, with a high near 67. North wind 2 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Mostly cloudy, with a low around 45. Northeast wind around 8 mph.
A chance of rain showers after 2pm. Mostly cloudy, with a high near 63. East wind 6 to 9 mph. Chance of precipitation is 50%.
Rain showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
A chance of rain showers before 2pm. Partly sunny, with a high near 57.
Partly cloudy, with a low around 32.
Sunny, with a high near 56.
Clear, with a low around 34.
Sunny, with a high near 63.
Mostly clear, with a low around 43.
Mostly sunny, with a high near 66.
Partly cloudy, with a low around 43.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 13
|
Sunny
|
77°F |
17 mph
W
|
|
Tonight
Oct 13
|
Chance Rain Showers
|
54°F |
2 to 14 mph
NW
|
|
Wednesday
Oct 14
|
Slight Chance Rain Showers then Partly Sunny
|
67°F |
2 to 8 mph
N
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy
|
45°F |
8 mph
NE
|
|
Thursday
Oct 15
|
Mostly Cloudy then Chance Rain Showers
|
63°F |
6 to 9 mph
E
|
|
Thursday Night
Oct 15
|
Rain Showers Likely
|
46°F |
5 to 12 mph
NNE
|
|
Friday
Oct 16
|
Chance Rain Showers
|
57°F |
14 to 22 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
32°F |
6 to 22 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
56°F |
3 to 12 mph
WNW
|
|
Saturday Night
Oct 17
|
Clear
|
34°F |
6 to 10 mph
WSW
|
|
Sunday
Oct 18
|
Sunny
|
63°F |
10 to 16 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
43°F |
10 to 14 mph
SSW
|
|
Monday
Oct 19
|
Mostly Sunny
|
66°F |
12 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
3 to 8 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Ionia County.
Coverage
Forecast coverage currently spans 5 of 5 mapped cities in Ionia County.
Largest mapped city population in this region: 5,738.
