December in Leander averages a daily high of 16.5°C with nights around 4°C. Expect roughly 7 wet days totalling 54.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Leander is February–April.
Based on GEORGETOWN LAKE, TX US (16.7km), 1995–2024. 23 years of December data.