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Weather extremes
How extreme does Pasadena's weather get?
The hottest, coldest, wettest and snowiest days Pasadena 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 Pasadena has recorded — each shown against what a normal day that time of year looks like.
That is about 17°F hotter than a normal July afternoon in Pasadena (typical high near 89°F).
The three most extreme on record
About 32°F colder than a normal January night in Pasadena (typical low near 25°F).
The three most extreme on record
More rain in a single day than Pasadena usually gets in the whole month of August (typical August total about 4.1 in).
The three most extreme on record
Close to a whole typical January's snow in one day (Pasadena averages about 6 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.
Pasadena's record heat sits well above even a hot day for the season — July's 106°F is about 17°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 Baltimore-washington Intl AP (NOAA GHCN station USW00093721), about 11 km from the city centre.