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Weather extremes
How extreme does San Jose's weather get?
The hottest, coldest, wettest and snowiest days San Jose 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 San Jose has recorded — each shown against what a normal day that time of year looks like.
That is about 29°F hotter than a normal June afternoon in San Jose (typical high near 80°F).
The three most extreme on record
About 42°F colder than a normal November night in San Jose (typical low near 47°F).
The three most extreme on record
More rain in a single day than San Jose usually gets in the whole month of April (typical April total about 1.2 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.
San Jose's record heat sits well above even a hot day for the season — June's 109°F is about 29°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 Los Gatos (NOAA GHCN station USC00045123), about 13 km from the city centre.