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Weather extremes
How extreme does McKinney's weather get?
The hottest, coldest, wettest and snowiest days McKinney 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 McKinney has recorded — each shown against what a normal day that time of year looks like.
That is about 23°F hotter than a normal June afternoon in McKinney (typical high near 88°F).
The three most extreme on record
About 39°F colder than a normal December night in McKinney (typical low near 36°F).
The three most extreme on record
More rain in a single day than McKinney usually gets in the whole month of February (typical February total about 2.7 in).
The three most extreme on record
Close to a whole typical December's snow in one day (McKinney averages about 0 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.
McKinney's record heat sits well above even a hot day for the season — June's 111°F is about 23°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 Richardson (NOAA GHCN station USC00417588), about 25 km from the city centre.