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Weather extremes
How extreme does Lancaster's weather get?
The hottest, coldest, wettest and snowiest days Lancaster 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 Lancaster has recorded — each shown against what a normal day that time of year looks like.
That is about 15°F hotter than a normal July afternoon in Lancaster (typical high near 85°F).
The three most extreme on record
About 140°F colder than a normal April night in Lancaster (typical low near 41°F).
The three most extreme on record
More rain in a single day than Lancaster usually gets in the whole month of January (typical January total about 2.9 in).
The three most extreme on record
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.
Lancaster's record heat sits well above even a hot day for the season — July's 100°F is about 15°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 John Glenn Intl AP (NOAA GHCN station USW00014821), about 39 km from the city centre.