Spring Grove, IL Weather & Climate Normals
Spring Grove's real weather, in one number
Spring Grove, IL scores 48/100 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.
Spring Grove's hottest and coldest months
Spring Grove's hottest month is Jul, averaging 71°F; its coldest is Jan, averaging 21°F, a 49.8°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Spring Grove
Over a typical year, Spring Grove sees about 36.55in of precipitation a year across roughly 125 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Spring Grove ranks
Spring Grove ranks 2510 of 4876 US cities in this dataset for comfort score, and 82 of 330 within IL. About 5,554 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from PELL LAKE, WI US, 7.3 miles from Spring Grove, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is