Typical Weather in Sioux City, IA in May
71° F Avg High
48° F Avg Low
9 Rainy Days
☀️ Temperature Summary
May is one of the warmer months of the year for Sioux City, with highs averaging around 71°F. Lows overnight are typically around 48°F. Temperatures will generally increase as the month goes on, with daily high temperatures ranging between 66°F and 77°F.
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 30% chance of rain for any given day. It rains more than usual in May, with total rainfall for the month typically near 5 inches.
Rainfall Throughout the Year
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