Mokena, IL Weather & Climate Normals
Mokena's real weather, in one number
Mokena, IL scores 45/100 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.
Mokena's hottest and coldest months
Mokena's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 23°F, a 50.7°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Mokena
Mokena averages 42.1in of precipitation a year across roughly 124 days with measurable rain or snow, and 28.2in of snow a year.
Where Mokena ranks
Mokena ranks 3352 of 4876 US cities in this dataset for comfort score, and 132 of 330 within IL. About 19,915 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from PARK FOREST, IL US, 10.5 miles from Mokena, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure