September weather forecastDe Luz Heights, CA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in De Luz Heights, California, with an average temperature varying between 61.3°F (16.3°C) and 84.2°F (29°C).Temperature
Transitioning from August to September, De Luz Heights observes an average high-temperature of a warm 84.2°F (29°C), differing subtly from the previous month. Despite considerable daily temperature swings, a steady low-temperature average of 61.3°F (16.3°C) is noted throughout September.Heat index
Throughout September, the heat index is estimated at a tropical 86°F (30°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in September in De Luz Heights is 56%.Rainfall
In De Luz Heights, during September, the rain falls for 3.9 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, in De Luz Heights, there are 61.4 rainfall days, and 9.45" (240mm) of precipitation is accumulated.Daylight
The average length of the day in September in De Luz Heights, California, is 12h and 22min.On the first day of September, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.
Sunshine
The average sunshine in September is 10.5h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Heed the precautions - Suggestions to avoid sunburn are made. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
De Luz Heights, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is December (62.2°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is February (44.4°F).
Average pressure in September
De Luz Heights, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
De Luz Heights, CA
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.3mph).
Average humidity in September
De Luz Heights, CA
- Average humidity in September: 56%
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
De Luz Heights, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
De Luz Heights, CA
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is March (8.8 days).
The month with the least rainy days is June (1.4 days).
Average daylight in September /
Average sunshine in September
De Luz Heights, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 30min
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 36min).
Average sunshine days in September
De Luz Heights, CA
- Average sunshine days in September: 24.4 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is February (20 days).
Average UV index in September
De Luz Heights, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
De Luz Heights, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 26).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
De Luz 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).
