September weather forecastDeath Valley Junction, CA
September
Weather in September
The first month of the autumn, September, is also a hot month in Death Valley Junction, California, with an average temperature fluctuating between 68.9°F (20.5°C) and 86.5°F (30.3°C).Temperature
Death Valley Junction's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's tropical 93.6°F (34.2°C) to a still hot 86.5°F (30.3°C). In the month of September, the average low-temperature usually rests at a pleasant 68.9°F (20.5°C).Humidity
In September, the average relative humidity is 23%.Rainfall
In September, the rain falls for 3.2 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 49.4 rainfall days, and 4.33" (110mm) of precipitation is accumulated.Snowfall
In Death Valley Junction, snow does not fall in April through October and December.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:30 pm PDT.
Sunshine
In Death Valley Junction, the average sunshine in September is 10.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Death Valley Junction, CA
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is July (94.5°F).
The month with the lowest average high temperature is December (50.7°F).
- Average low temperature in September: 68.9°F
The month with the highest average low temperature is July (76.1°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in September
Death Valley Junction, CA
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).
Average wind speed in September
Death Valley Junction, CA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is January (6mph).
Average humidity in September
Death Valley Junction, CA
- Average humidity in September: 23%
The month with the highest relative humidity is January (46%).
The month with the lowest relative humidity is June (17%).
Average rainfall in September
Death Valley Junction, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is December (0.59").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Death Valley Junction, CA
- Average rainfall days in September: 3.2 days
The month with the highest number of rainy days is March (5.9 days).
The month with the least rainy days is June (1.4 days).
Average snowfall in September
Death Valley Junction, CA
- Average snowfall in September: 0"
The month with the highest snowfall is November (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Death Valley Junction, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Death Valley Junction, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Death Valley Junction, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (20.1 days).
Average UV index in September
Death Valley Junction, CA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Death Valley Junction, CA
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are June, August and September (Cloud cover 6).
Average visibility in September
Death Valley Junction, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





