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Weather extremes
How extreme does Harvey's weather get?
The hottest, coldest, wettest and snowiest days Harvey 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 Harvey has recorded — each shown against what a normal day that time of year looks like.
That is about 12°F hotter than a normal June afternoon in Harvey (typical high near 93°F).
The three most extreme on record
About 48°F colder than a normal November night in Harvey (typical low near 55°F).
The three most extreme on record
More rain in a single day than Harvey usually gets in the whole month of May (typical May total about 5.4 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.
Harvey's record heat sits well above even a hot day for the season — June's 104°F is about 12°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 New Orleans Audubon (NOAA GHCN station USW00012930), about 5 km from the city centre.