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Weather extremes
How extreme does Santa Rosa's weather get?
The hottest, coldest, wettest and snowiest days Santa Rosa 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 Santa Rosa has recorded — each shown against what a normal day that time of year looks like.
That is about 23°F hotter than a normal January afternoon in Santa Rosa (typical high near 90°F).
The three most extreme on record
About 23°F colder than a normal July night in Santa Rosa (typical low near 35°F).
The three most extreme on record
More rain in a single day than Santa Rosa usually gets in the whole month of February (typical February total about 1.6 in).
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.
Santa Rosa's record heat sits well above even a hot day for the season — January's 113°F is about 23°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 the WMO's CLINO 1991–2020 collection, measured at Santa_rosa_aero, about 3 km from the city centre.