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
The shift from August to September includes a small decrease in the average high-temperature, from a tropical 91°F (32.8°C) to a moderately hot 85.3°F (29.6°C). September is characterized by a distinct thermal shift, with nighttime lows averaging at an enjoyable 60.8°F (16°C).Humidity
In September, the average relative humidity is 36%.Rainfall
In Lake Los Angeles, California, during September, the rain falls for 2.5 days and regularly aggregates up to 0.2" (5mm) of precipitation. In Lake Los Angeles, during the entire year, the rain falls for 43.8 days and collects up to 5.24" (133mm) of precipitation.Snowfall
January, April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:24 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:36 pm PDT.
Sunshine
In Lake Los Angeles, the average sunshine in September is 10.8h.UV index
In Lake Los Angeles, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 6 transforms into the following advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Lake Los Angeles during September?
What is the average humidity in September in Lake Los Angeles?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Lake Los Angeles have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Lake Los Angeles, CA
- Average high temperature in September: 85.3°F
The warmest months (with the highest average high temperature) are July and August (91°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in September: 60.8°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).
Average pressure in September
Lake Los Angeles, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Lake Los Angeles, CA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in September
Lake Los Angeles, CA
- Average humidity in September: 36%
The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is August (33%).
Average rainfall in September
Lake Los Angeles, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Lake Los Angeles, CA
- Average rainfall days in September: 2.5 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in September
Lake Los Angeles, CA
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.81").
The months with the least snowfall are January, April, May, June, July, August, September and October (0").
Average snowfall days in September
Lake Los Angeles, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lake Los Angeles, 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 48min).
Average sunshine days in September
Lake Los Angeles, CA
- Average sunshine days in September: 26.5 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (23.3 days).
Average UV index in September
Lake Los Angeles, CA
- Average UV index in September: 6
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
Lake Los Angeles, CA
- Average cloud cover in September: 5
The month with the most cloud cover is December (Cloud cover 22).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility in September
Lake Los Angeles, 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).
Lake Los Angeles, California, USA
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