May in Omaha averages a daily high of 23.3°C with nights around 11.1°C. Expect roughly 12.9 wet days totalling 124.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Omaha is September–October.
Based on OMAHA EPPLEY AIRFIELD, NE US (7km), 1995–2024. 30 years of May data.