Typical Weather in Sioux Falls, SD in May
70° F Avg High
49° F Avg Low
7 Rainy Days
☀️ Temperature Summary
May is one of the warmer months of the year for Sioux Falls, with highs averaging around 70°F. Lows overnight are typically around 49°F. Daily high temperatures can range between 63°F and 75°F, and will often rise as the month goes on.
May is a great time to visit Sioux Falls, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In May you can expect close to a 23% chance of rain for any given day. It rains more than usual in May, with total rainfall for the month typically near 4 inches.
Rainfall Throughout the Year
Planning a trip to Sioux Falls? Try our free trip weather planner