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Weather extremes
How extreme does Gilroy's weather get?
The hottest, coldest, wettest and snowiest days Gilroy 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 Gilroy has recorded — each shown against what a normal day that time of year looks like.
That is about 36°F hotter than a normal September afternoon in Gilroy (typical high near 74°F).
The three most extreme on record
About 45°F colder than a normal April night in Gilroy (typical low near 45°F).
The three most extreme on record
More rain in a single day than Gilroy usually gets in the whole month of February (typical February total about 4.5 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.
Gilroy's record heat sits well above even a hot day for the season — September's 110°F is about 36°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 Salinas #2 (NOAA GHCN station USC00047668), about 39 km from the city centre.