El Cajon Weather in September
September in El Cajon averages 31°C (88°F) during the day and 17°C (63°F) at night. With only 4.1 mm (0.2 in) of rainfall expected on average, it's a largely dry month.
Rainfall in El Cajon in September
Expect around a single day of rain based on historical data, with 4.1 mm (0.2 in) average. Any rain that does arrive is likely to be fairly light and short-lived.
Temperature in El Cajon in September
September tends to be one of the excellent months in El Cajon, with 31°C (88°F) in the afternoon and 17°C (63°F) overnight. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in El Cajon in September
There are approximately 253 hours of sunshine this month, resulting in mostly clear days.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit El Cajon. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our El Cajon's climate page.
El Cajon Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
31°C (88°F)
Chance of Rain
3%
Precipitation
4.1 mm (0.2 in)
Rainy days
a single day
Humidity
74% *
Sunshine
253 hours *
Percentage Sunshine
68% *
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in El Cajon in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in El Cajon in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our El Cajon's climate page.
Temperature Rainfall Sunshine Humidity
See the full El Cajon climate overview or explore weather in the United States of America.
