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Sioux City Weather in October
United States · mid-fall in Northern Hemisphere / mid-spring in Southern Hemisphere
Sioux City at the meeting of Iowa, Nebraska, and South Dakota on the Missouri River has a harsh continental climate at the edge of the Great Plains. Cold Arctic air arrives with little warning and blizzards can be intense. The Missouri River valley provides some shelter but also contributes to flooding risk and valley fog.
Foliage season in temperate cities. Often the best month to visit Europe.
Current Weather in Sioux City Right Now
40°F
Overcast Clouds
Feels like 29°F · H 40°F / L 39°F