Manhattan, IL Weather & Climate Normals
What a normal year in Manhattan actually looks like
On the 30-year record NOAA keeps for Manhattan, IL, the comfort score comes out to 46/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 5 months a year land in the 55–75°F range this site treats as mild.
How much Manhattan's weather actually swings
Average temperatures in Manhattan run from 24°F in Jan up to 74°F in Jul, a 50°F seasonal swing, one of the widest gaps in this dataset.
How wet Manhattan actually gets
Over a typical year, Manhattan sees about 38.03in of precipitation a year across roughly 123 days with measurable rain or snow, with 16.9in of snow a year.
Manhattan against the rest of the country
Out of 4876 cities scored here, Manhattan comes in at 3085; within IL alone it ranks 105 of 330. Population is about 10,772.
Checking the actual forecast
These figures come from JOLIET BRANDON RD DAM, IL US, the NOAA station 8.6 miles from Manhattan, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why this uses the nearest NOAA station · How the comfort score is calculated