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Has the climate in Casper changed?
Casper has cooled about 0.7°F since 2001.
About 0.3°F per decade, measured from Casper's official daily weather records, 2001–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.
What has actually changed
Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.
Casper's temperature, year by year
Average temperature for each year from 2001 to 2025.
Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.
Methodology & sources
Temperature — 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.