December in Deltona averages a daily high of 22.8°C with nights around 11.6°C. Expect roughly 7 wet days totalling 65mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Deltona is November–April.
Based on SANFORD, FL US (9.6km), 1995–2024. 30 years of December data.