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Weather extremes
How extreme does Mission's weather get?
The hottest, coldest, wettest and snowiest days Mission 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 Mission has recorded — each shown against what a normal day that time of year looks like.
That is about 28°F hotter than a normal September afternoon in Mission (typical high near 94°F).
The three most extreme on record
About 53°F colder than a normal February night in Mission (typical low near 53°F).
The three most extreme on record
More rain in a single day than Mission usually gets in the whole month of August (typical August total about 1.5 in).
The three most extreme on record
Close to a whole typical December's snow in one day (Mission averages about 0 in across the month).
Top recorded days
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.
Mission's record heat sits well above even a hot day for the season — September's 122°F is about 28°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 Mcallen (NOAA GHCN station USC00415701), about 8 km from the city centre.