December in Nogales averages a daily high of 18.5°C with nights around 1.1°C. Expect roughly 4.2 wet days totalling 21.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Nogales is February–April.
Based on NOGALES INTERNATIONAL AIRPORT, AZ US (15.4km), 1995–2024. 26 years of December data.