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Weather extremes
How extreme does Casper's weather get?
The hottest, coldest, wettest and snowiest days Casper 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 Casper 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 Casper (typical high near 88°F).
The three most extreme on record
About 54°F colder than a normal February night in Casper (typical low near 18°F).
The three most extreme on record
About 95% of a typical May's rain in a single day (Casper averages roughly 2.7 in across the month).
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.
Casper's record heat sits well above even a hot day for the season — July's 104°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 Casper Wwtp (NOAA GHCN station USC00481569), about 2 km from the city centre.