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Weather extremes
How extreme does East Boston's weather get?
The hottest, coldest, wettest and snowiest days East Boston 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 East Boston has recorded — each shown against what a normal day that time of year looks like.
That is about 21°F hotter than a normal July afternoon in East Boston (typical high near 82°F).
The three most extreme on record
About 35°F colder than a normal February night in East Boston (typical low near 25°F).
The three most extreme on record
More rain in a single day than East Boston usually gets in the whole month of October (typical October total about 4.0 in).
The three most extreme on record
Close to a whole typical February's snow in one day (East Boston averages about 14 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.
East Boston's record heat sits well above even a hot day for the season — July's 103°F is about 21°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 Boston (NOAA GHCN station USW00014739), about 3 km from the city centre.