El Cajon Mountain in the nearby East County landscape

Weather · September

El Cajon weather in September

Average highs of 87°F, lows of 62°F and 0.10 in of rain, from 30 years of weather records.

September is El Cajon’s 2nd warmest month, with average highs of 87°F and lows of 62°F. That is 1° cooler than August, and 10° above the yearly average high.

Average high
87°F
Average low
62°F
Precipitation
0.10 in
Wet days
1
Sunrise · sunset
6:31 AM · 6:55 PM

September across the year

  1. 69°43°Jan
  2. 69°44°Feb
  3. 71°48°Mar
  4. 75°51°Apr
  5. 76°56°May
  6. 81°59°Jun
  7. 86°63°Jul
  8. 89°65°Aug
  9. 87°62°Sep
  10. 81°56°Oct
  11. 75°47°Nov
  12. 69°42°Dec

High and low Rain

What to wear in September

  • Warm days: shorts and T-shirts.

September is good for

What’s on in El Cajon in September

See all upcoming events and school days off.

Around El Cajon

Front Entrance to El Cajon Valley High School
Front Entrance to El Cajon Valley High SchoolAnthonyrdevine · CC BY-SA 4.0
Mother Goose Parade 2017 El Cajon California Firetruck and Smokey the Bear
Mother Goose Parade 2017 El Cajon California Firetruck and Smokey the BearSocalgœtz · CC BY-SA 4.0
Circus Circus 16 IF1 piloted by Ray Cote, El Cajon
Circus Circus 16 IF1 piloted by Ray CoteTexacote · CC BY 4.0

See El Cajon

A look around town before you go.

A recorded city film: El Cajon video thumbnail

A DRIVE AROUND TOWN

A recorded city film: El Cajon

This recorded neighborhood drive explores El Cajon streets. It is a creator’s filmed journey, not a live traffic camera or a current road-condition report.

Watch on YouTube ↗
More info on this cute garden in El Cajon ⬇️ Currently 50% off for Museum Month! There’s animals, video thumbnail

THINGS TO DO · YOUTUBE SHORT

More info on this cute garden in El Cajon ⬇️ Currently 50% off for Museum Month! There’s animals,

An activity Short shared by San Diego Mamas.

Watch on YouTube ↗

September compared with the months around it

MonthHighLowRain
August89°F65°F0.00 in
September87°F62°F0.10 in
October81°F56°F0.50 in

Planning a trip? See the best time to visit El Cajon and today’s forecast.

Questions

How hot does it get in El Cajon in September?

Average highs are 87°F and average lows 62°F, for a daily mean of 75°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in El Cajon in September?

September averages 0.10 in of precipitation over about 1 days with at least 0.01 in. It is the 11th wettest month of the year.

What time is sunset in El Cajon in September?

Around mid-September the sun rises about 6:31 AM and sets about 6:55 PM, for roughly 12.4 hours of daylight.

Is September a good time to visit El Cajon?

The mildest months for visiting are May, June, October. September is warm, with Halloween events.

NOAA U.S. Climate Normals 1991–2020, El Cajon station (2 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.

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