September weather forecastQuartz Hill, CA
September
Weather in September
The first month of the autumn, September, is still a tropical month in Quartz Hill, California, with an average temperature varying between 86°F (30°C) and 61.3°F (16.3°C).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's hot 91.4°F (33°C) to a still tropical 86°F (30°C). September nights indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to an enjoyable 61.3°F (16.3°C).Humidity
In Quartz Hill, the average relative humidity in September is 34%.Rainfall
In Quartz Hill, during September, the rain falls for 2.6 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Quartz Hill, during the entire year, the rain falls for 48.7 days and collects up to 5.71" (145mm) of precipitation.Snowfall
In Quartz Hill, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:26 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:37 pm PDT.
Sunshine
In Quartz Hill, the average sunshine in September is 10.9h.UV index
In Quartz Hill, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 5 transforms into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Quartz Hill, CA
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).
Average pressure in September
Quartz Hill, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Quartz Hill, CA
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (6.7mph).
Average humidity in September
Quartz Hill, CA
- Average humidity in September: 34%
The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is August (31%).
Average rainfall in September
Quartz Hill, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Quartz Hill, CA
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.1 days).
Average snowfall in September
Quartz Hill, CA
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Quartz Hill, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 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
Quartz Hill, CA
- Average daylight in September: 12h and 24min
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 54min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 54min).
Average sunshine days in September
Quartz Hill, CA
- Average sunshine days in September: 25.5 days
The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in September
Quartz Hill, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Quartz Hill, CA
- Average cloud cover in September: 5
The months with the most cloud cover are March and December (Cloud cover 21).
The months with the least cloud cover are June, August and September (Cloud cover 5).
Average visibility in September
Quartz Hill, 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).
