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
The onset of September manifests an average high-temperature of a still hot 86.2°F (30.1°C), demonstrating a minor variation from the preceding month. Throughout September, Avocado Heights acknowledges a distinct difference between its daytime highs and the steady low average of 64.4°F (18°C).Heat index
For September, the heat index is calculated to be a hot 87.8°F (31°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Note that heat index values are valued for light wind and location in the shade. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In September, the average relative humidity is 50%.Rainfall
In Avocado Heights, in September, during 2.2 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Avocado Heights, during the entire year, the rain falls for 41.3 days and collects up to 5.35" (136mm) of precipitation.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:37 pm PDT.
Sunshine
The average sunshine in September is 10.7h.UV index
In Avocado Heights, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Avocado Heights have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Avocado Heights have in September?
What is the UV index intensity in September?
Average temperature in September
Avocado Heights, CA
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is December (64.6°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48°F).
Average pressure in September
Avocado Heights, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Avocado Heights, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.6mph).
Average humidity in September
Avocado Heights, CA
- Average humidity in September: 50%
The months with the highest relative humidity are May and June (58%).
The month with the lowest relative humidity is November (46%).
Average rainfall in September
Avocado Heights, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is December (1.3").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
Avocado Heights, CA
- Average rainfall days in September: 2.2 days
The month with the highest number of rainy days is March (5.9 days).
The month with the least rainy days is August (1.2 days).
Average daylight in September /
Average sunshine in September
Avocado Heights, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Avocado Heights, CA
- Average sunshine days in September: 26.6 days
The months with the most sunshine days are June and August (27.9 days).
The month with the least sunshine days is February (22.3 days).
Average UV index in September
Avocado Heights, CA
- Average UV index in September: 6
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in September
Avocado Heights, CA
- Average cloud cover in September: 8
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Avocado Heights, 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).
Avocado Heights, California, USA
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