The highest day temperature in September 2025 was 113°F. The lowest night temperature was 53°F. The average values for day and night temperatures during September were 100.5°F и 69.1°F respectivly.

Almost all days in September are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in September for Palm Desert is 0.1 in. This value is relatively stable throughout the year.

The average wind speed in September is 5.0 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Palm Desert in September is 11.7 hours.