December in Redlands averages a daily high of 19°C with nights around 5.1°C. Expect roughly 5.9 wet days totalling 48.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Redlands is October–January.
Based on REDLANDS, CA US (2.4km), 1995–2024. 20 years of December data.