May in Norman averages a daily high of 26.3°C with nights around 14.8°C. Expect roughly 10.4 wet days totalling 135.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Norman is March–May.
Based on NORMAN 3 SSE, OK US (4.6km), 1995–2024. 21 years of May data.