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Weather extremes
How extreme does La Mesa's weather get?
The hottest, coldest, wettest and snowiest days La Mesa 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 La Mesa has recorded — each shown against what a normal day that time of year looks like.
That is about 27°F hotter than a normal September afternoon in La Mesa (typical high near 87°F).
The three most extreme on record
About 17°F colder than a normal December night in La Mesa (typical low near 42°F).
The three most extreme on record
More rain in a single day than La Mesa usually gets in the whole month of December (typical December total about 1.8 in).
The three most extreme on record
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.
La Mesa's record heat sits well above even a hot day for the season — September's 114°F is about 27°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 Imperial Beach Ream Fld Nas (NOAA GHCN station USW00093115), about 24 km from the city centre.