Death Valley National Park
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Death Valley National Park, CA

Amargosa Range
Amargosa Range's Zabriskie point located in the Death Valley National Park IN California
The first month of the autumn, September, is also a scorching month in Death Valley National Park, California, with average temperature ranging between min 75.6°F (24.2°C) and max 106.5°F (41.4°C).

Temperature

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

Rainfall

In September, the rain falls for 1 days. Throughout September, 0.2" (5.3mm) of precipitation is accumulated. In Death Valley National Park, during the entire year, the rain falls for 20 days and collects up to 2.4" (60mm) of precipitation.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In Death Valley National Park, the average sunshine is 11h.

UV index

In September, the average daily maximum UV index is 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation for the average person.
In September, the average maximum UV index of 8 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Death Valley National Park?

In Death Valley National Park, California, in September, the average high-temperature is 106.5°F (41.4°C), and the average low-temperature is 75.6°F (24.2°C).

How many days does it rain in September in Death Valley National Park?

In Death Valley National Park, California, during September, the rain falls for 1 days and regularly aggregates up to 0.2" (5.3mm) of precipitation.

What is the average length of the day in September in Death Valley National Park?

In September, the average length of the day in Death Valley National Park is 12.4h.

How long on average sun shines in September in Death Valley National Park?

In Death Valley National Park, California, the average sunshine in September is 11h.

What is the UV index intensity in September in Death Valley National Park?

The average daily maximum UV index in September in Death Valley National Park is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Death Valley National Park, CA
  • Average high temperature in September: 106.5°F

The warmest month (with the highest average high temperature) is July (116.5°F).
The month with the lowest average high temperature is December (65.2°F).

  • Average low temperature in September: 75.6°F

The month with the highest average low temperature is July (88°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

Average rainfall in September - Death Valley National Park, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is February (0.5").
The driest month (with the lowest rainfall) is May (0").

Average rainfall days in September - Death Valley National Park, CA
  • Average rainfall days in September: 1 days

Months with the highest number of rainy days are January, February, March and December (3 days).
Months with the lowest number of rainy days are June and July (0 days).

Average daylight in September / Average sunshine in September - Death Valley National Park, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 11h

Months with most sunshine are June and July (Average sunshine: 13h).
The month with least sunshine is December (Average sunshine: 6h).

Average UV index in September - Death Valley National Park, CA
  • Average UV index in September: 8

Months with the highest UV index are June, July and August (UV index 10).
The month with the lowest UV index is December (UV index 2).