Ionia, MI Weather & Climate Normals
Ionia's real weather, in one number
Ionia, MI scores 42/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Ionia's hottest and coldest months
Ionia's hottest month is Jul, averaging 71°F; its coldest is Jan, averaging 22°F, a 48.3°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Ionia
Ionia averages 35.92in of precipitation a year across roughly 138 days with measurable rain or snow, and 54.2in of snow a year.
Where Ionia ranks
Ionia ranks 4240 of 4876 US cities in this dataset for comfort score, and 131 of 153 within MI. About 12,265 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from IONIA 2SSW, MI US, 1.6 miles from Ionia, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station