December in Cleveland averages a daily high of 5.4°C with nights around -0.7°C. Expect roughly 11.4 wet days totalling 52.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Cleveland is May–September.
Based on CLEVELAND BURKE LAKEFRONT AIRPORT, OH US (3.6km), 1995–2024. 26 years of December data.