The best time to visit Sioux Falls
Month-by-month climate averages for Sioux Falls, SD, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Sioux Falls is usually May and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest June rain is behind you.
Sioux Falls is warmest in July (highs near 82°F) and coldest in January (lows around 10°F), with roughly 28 inches of precipitation across the year and June the wettest month. The sweet spot for most visitors is May and October. Expect overnight frost in January, February, March, November and December.
These are long-run averages. For the actual days you are travelling, check the live Sioux Falls forecast — and note how much the models agree, because that tells you how much to trust it.
Sioux Falls weather by month
what to expect in Sioux Falls through the yearHere is Sioux Falls's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Sioux Falls by season.