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
West Hollywood's weather in September indicates an average high-temperature of a still moderately hot 81.7°F (27.6°C), nearly consistent with the 83.1°F (28.4°C) of August. In September, the average low-temperature in West Hollywood records at a comfortable 63.9°F (17.7°C) during the nights.Heat index
Throughout September, the heat index is computed to be 84.2°F (29°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
In September, the average relative humidity is 57%.Rainfall
In September, in West Hollywood, the rain falls for 2.7 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. In West Hollywood, California, during the entire year, the rain falls for 48 days and collects up to 7.83" (199mm) of precipitation.Daylight
In West Hollywood, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:38 pm PDT.
Sunshine
The average sunshine in September is 10.8h.UV index
The months with the highest UV index in West Hollywood are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in West Hollywood?
What is the average humidity in September in West Hollywood?
How much does it rain in West Hollywood in September?
What is the average length of the day in September in West Hollywood?
When are sunrise and sunset in September in West Hollywood?
How long on average sun shines in September in West Hollywood?
What are the months with the highest UV index in West Hollywood?
What is the UV index reading in September in West Hollywood?
Average temperature in September
West Hollywood, CA
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (63.3°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is August (64.9°F).
The coldest months (with the lowest average low temperature) are February and December (49.3°F).
Average pressure in September
West Hollywood, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
West Hollywood, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are August and September (4.6mph).
Average humidity in September
West Hollywood, CA
- Average humidity in September: 57%
The month with the highest relative humidity is June (66%).
The month with the lowest relative humidity is November (50%).
Average rainfall in September
West Hollywood, CA
- Average rainfall in September: 0.2"
The wettest months (with the highest rainfall) are January and February (1.46").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
West Hollywood, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (6.9 days).
The months with the least rainy days are June and August (1.8 days).
Average daylight in September /
Average sunshine in September
West Hollywood, 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, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
West Hollywood, CA
- Average sunshine days in September: 24.9 days
The month with the most sunshine days is October (26.4 days).
The month with the least sunshine days is February (22.3 days).
Average UV index in September
West Hollywood, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in September
West Hollywood, CA
- Average cloud cover in September: 9
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 6).
Average visibility in September
West Hollywood, 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).
West Hollywood, California, USA
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