Sioux Falls Weather in October

Sioux Falls on the Big Sioux River is South Dakota's largest city with a continental climate typical of the northern Great Plains. The famous quartzite Falls Park waterfall in the center of the city is a geological marvel where the river drops over pink Sioux quartzite. Winters are cold with blizzards arriving from the northwest.

Foliage season in temperate cities. Often the best month to visit Europe.