July in Santee averages a daily high of 30.8°C with nights around 17.6°C. Rain is rare — about 0.5 wet days and 3.9mm across the month. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Santee is March–June.
Based on EL CAJON, CA US (6km), 1995–2024. 27 years of July data.