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
August and September mark Rolling Hills's peak of temperatures, averaging a high-temperature of 73.2°F (22.9°C).Humidity
In September, the average relative humidity is 72%.Rainfall
In Rolling Hills, California, in September, during 3.5 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. Throughout the year, there are 62.1 rainfall days, and 8.62" (219mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:38 pm PDT.
Sunshine
In September, the average sunshine is 10.4h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
What is the average September temperature?
What is the average humidity in September in Rolling Hills?
How many days does it rain in September?
How many hours of daylight does Rolling Hills have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Rolling Hills have in September?
What is the UV index intensity in September?
Average temperature in September
Rolling Hills, CA
- Average high temperature in September: 73.2°F
The warmest months (with the highest average high temperature) are August and September (73.2°F).
The month with the lowest average high temperature is February (61.5°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is September (64.2°F).
The coldest month (with the lowest average low temperature) is February (53.2°F).
Average pressure in September
Rolling Hills, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in September
Rolling Hills, CA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in September
Rolling Hills, CA
- Average humidity in September: 72%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is November (61%).
Average rainfall in September
Rolling Hills, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is January (1.73").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Rolling Hills, CA
- Average rainfall days in September: 3.5 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is August (3.1 days).
Average daylight in September /
Average sunshine in September
Rolling Hills, 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: 10h and 0min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
Average sunshine days in September
Rolling Hills, CA
- Average sunshine days in September: 22.3 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is June (20 days).
Average UV index in September
Rolling Hills, CA
- Average UV index in September: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Rolling Hills, CA
- Average cloud cover in September: 13
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in September
Rolling Hills, 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).
Rolling Hills, California, USA
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