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 snowfall in September
- Average snowfall 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
With the onset of September, the average high-temperature subtly recedes from August's 91.4°F (33°C) to a still hot 86°F (30°C). From significant daily highs, Lancaster's nights in September cool down to an average low-temperature of 61.3°F (16.3°C).Humidity
The average relative humidity in September is 34%.Rainfall
In September, the rain falls for 2.6 days. Throughout September, 0.16" (4mm) of precipitation is accumulated. Throughout the year, there are 48.7 rainfall days, and 5.71" (145mm) of precipitation is accumulated.Snowfall
In Lancaster, snow does not fall in April through October.Daylight
In Lancaster, 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 Lancaster, the average sunshine in September is 10.9h.UV index
The average daily maximum UV index in September in Lancaster is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during September translates into the following guidance:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Around midday, solar radiation is most harmful; hence, exposure should be limited. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Lancaster have in September?
What is the UV index reading in September?
Average temperature in September
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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 5min
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
Lancaster, 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
Lancaster, 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
Lancaster, 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
Lancaster, 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).
Lancaster, California, USA
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