December in Hialeah averages a daily high of 25.6°C with nights around 17.5°C. Expect roughly 7.7 wet days totalling 72.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Hialeah is November–April.
Based on HIALEAH, FL US (3.5km), 1995–2024. 27 years of December data.