Is San Dionysio (historical) hot in September?
Days are typically very hot at 40.2°C, while nights average 21.3°C.
United States · 1991–2020 normal
San Dionysio (historical) in
September.
Typical September weather in San Dionysio (historical): 40.2°C by day, 21.3°C at night, 7 mm of rain over 1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high40.2°C
Typical low21.3°C
Rain7 mm
Wet days1
In the year-round weather comparison, September scores 35 out of 100 (February leads the year at 87). Daylight is calculated as 12 h 20 from latitude 32.75°.
September at a glance
What is San Dionysio (historical) like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 7 mm across about 1 wet days.
How much daylight is there?
There are about 12 h 20 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 9 of 12 in our weather comparison; February ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5312867
- NOAA station
- USC00029656 · YUMA QUARTERMASTER DEPOT
- Station distance
- 5.7 km from the place centre
- Coverage
- Strong coverage · 25 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for San Dionysio (historical) is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work