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Weather extremes
How extreme does Suisun's weather get?
The hottest, coldest, wettest and snowiest days Suisun 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 Suisun has recorded — each shown against what a normal day that time of year looks like.
That is about 20°F hotter than a normal July afternoon in Suisun (typical high near 95°F).
The three most extreme on record
About 20°F colder than a normal December night in Suisun (typical low near 37°F).
The three most extreme on record
About 89% of a typical December's rain in a single day (Suisun averages roughly 5.1 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.
Suisun's record heat sits well above even a hot day for the season — July's 115°F is about 20°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 Vacaville/nut Tree AP Asos (NOAA GHCN station USW00093241), about 17 km from the city centre.