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Weather extremes
How extreme does Sioux City's weather get?
The hottest, coldest, wettest and snowiest days Sioux City 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 Sioux City 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 Sioux City (typical high near 87°F).
The three most extreme on record
About 38°F colder than a normal January night in Sioux City (typical low near 10°F).
The three most extreme on record
More rain in a single day than Sioux City usually gets in the whole month of July (typical July total about 3.8 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.
Sioux City's record heat sits well above even a hot day for the season — July's 108°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 — 1991–2020 normals computed from 30 years of daily observations at Sioux Gateway/col Bud Day Field AP, a weather station, about 12 km from the city centre. The underlying daily records come from NOAA's global station network.