Weather in El Cajon in September
El Cajon, United States averages a high of 27.9°C (82.2°F) and low of 17.7°C (63.9°F) in September, with 1 rain days and 11.5 hours of daily sunshine. Travel score: 95.8/100 (Excellent). The best time to visit El Cajon is July.
High
28°C82°F
Low
18°C64°F
🌧️
1
rain days
☀️
11.5
hrs/day sunshine
💧
68%
humidity
96— Excellent
September in El Cajon is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in El Cajon?
How much does it rain in El Cajon in September?
El Cajon receives an average of 7mm of rainfall across 1 rainy days in September. The annual total is 314.3mm.
What should I pack for El Cajon in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
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Light layers and t-shirts
Warm weather around 28°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
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Sunglasses
Protect your eyes from bright sun
Traveling to United States in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31