Home › Cities › United States › Maryland › Saint Charles › Tools › Weather extremes
Weather extremes
How extreme does Saint Charles's weather get?
The hottest, coldest, wettest and snowiest days Saint Charles 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 Saint Charles has recorded — each shown against what a normal day that time of year looks like.
That is about 16°F hotter than a normal July afternoon in Saint Charles (typical high near 90°F).
The three most extreme on record
About 38°F colder than a normal January night in Saint Charles (typical low near 28°F).
The three most extreme on record
More rain in a single day than Saint Charles usually gets in the whole month of June (typical June total about 4.6 in).
The three most extreme on record
Close to a whole typical December's snow in one day (Saint Charles averages about 1 in across the month).
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.
Saint Charles's record heat sits well above even a hot day for the season — July's 106°F is about 16°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 Oxon Hill (NOAA GHCN station USC00186800), about 22 km from the city centre.