September weather forecast
Death Valley National Park, CA

September, the first month of the autumn in Death Valley National Park, is also a scorching month, with an average temperature fluctuating between 75.6°F (24.2°C) and 106.5°F (41.4°C).

Temperature

In Death Valley National Park, the average high-temperature in September marginally drops from a burning hot 114.6°F (45.9°C) in August to a blistering 106.5°F (41.4°C). In Death Valley National Park, the average low-temperature is 75.6°F (24.2°C).

Rainfall

In Death Valley National Park, during September, the rain falls for 1 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, there are 20 rainfall days, and 2.36" (60mm) of precipitation is accumulated.

Daylight

In Death Valley National Park, California, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:33 pm PDT.

Sunshine

The average sunshine in September in Death Valley National Park is 11h.

UV index

The average daily maximum UV index in September in Death Valley National Park is 8. A UV Index of 8 to 10 symbolizes a very high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.