December in South Jordan averages a daily high of 4.1°C with nights around -4.5°C. Expect roughly 9.1 wet days totalling 58.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit South Jordan is May–June.
Based on COTTONWOOD WEIR, UT US (13.9km), 1995–2024. 30 years of December data.