March in El Cajon averages a daily high of 22°C with nights around 8.7°C. Expect roughly 5.6 wet days totalling 44.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit El Cajon is March–June.
Based on EL CAJON, CA US (3.3km), 1995–2024. 26 years of March data.