Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival registers an average high-temperature of a still warm 77.7°F (25.4°C), closely aligning with the temperature of the previous month. A noteworthy temperature dip to a cool 55°F (12.8°C) is observed during the nights of September.Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 64%.Rainfall
In Day Valley, in September, it is raining for 2.7 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 69.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Daylight
In Day Valley, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
In Day Valley, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the average September temperature in Day Valley?
What is the least humid month in Day Valley?
What is the average humidity in September in Day Valley?
How much does it rain in Day Valley in September?
What is the average length of the day in September in Day Valley?
When are sunrise and sunset in September in Day Valley?
How long on average sun shines in September in Day Valley?
What is the UV index intensity in September in Day Valley?
Average temperature in September
Day Valley, CA
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is September (55°F).
The coldest month (with the lowest average low temperature) is February (43°F).
Average pressure in September
Day Valley, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in September
Day Valley, CA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).
Average humidity in September
Day Valley, CA
- Average humidity in September: 64%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (64%).
Average rainfall in September
Day Valley, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Day Valley, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.1 days).
Average daylight in September /
Average sunshine in September
Day Valley, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Day Valley, CA
- Average sunshine days in September: 26 days
The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in September
Day Valley, CA
- Average UV index in September: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Day Valley, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
Day Valley, 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).
Day Valley, California, USA
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