March in Zanjan averages a daily high of 13.9°C with nights around 2°C. Expect roughly 8.5 wet days totalling 37.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Zanjan is September–October.
Based on ZANJAN, IR (16.4km), 1995–2024. 16 years of March data.