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Weather extremes
How extreme does Vernon Hills's weather get?
The hottest, coldest, wettest and snowiest days Vernon Hills has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.
The four kinds of extreme
The hottest, coldest, wettest and snowiest single days Vernon Hills has recorded — each shown against what a normal day that time of year looks like.
That is about 60°F hotter than a normal November afternoon in Vernon Hills (typical high near 49°F).
The three most extreme on record
About 39°F colder than a normal January night in Vernon Hills (typical low near 18°F).
The three most extreme on record
More rain in a single day than Vernon Hills usually gets in the whole month of June (typical June total about 4.0 in).
The three most extreme on record
How hot and cold it gets, month by month
The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.
Vernon Hills's record heat sits well above even a hot day for the season — November's 108°F is about 60°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.
In plain terms
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Chicago Palwaukee AP (NOAA GHCN station USW00004838), about 13 km from the city centre.