United States · 1991–2020 normal
Rancho San Diego in
September.
Typical September weather in Rancho San Diego: 31.3°C by day, 16.9°C at night, 2 mm of rain over 0.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high31.3°C
Typical low16.9°C
Rain2 mm
Wet days0.5
Comfort score 72 this month (May leads the year at 93). Daylight is calculated as 12 h 20 from latitude 32.75°. Open-water sea temperature is 20.5°C (22 km from the place centre).
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5386053
- NOAA station
- USC00042706 · EL CAJON
- Station distance
- 6 km from the place centre
- Coverage
- Good coverage · 24 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
From evidence to a booked trip
Know the month.
Then plan the trip.
The climate answer for Rancho San Diego is independent of commercial relationships. We are building a separately labelled route to approved flight, stay and activity partners; no private inventory or unapproved affiliate feed is used today.
How travel partnerships will work