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
Los Serranos, California, experiences an average high-temperature of a still hot 88.3°F (31.3°C) in September, subtly different from August's 91°F (32.8°C). In Los Serranos, the September nights descend to a significantly cooler average of 64.4°F (18°C) compared to daytime highs.Heat index
In September, the heat index is computed to be a hot 91.4°F (33°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly meaningful for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
In Los Serranos, the average relative humidity in September is 47%.Rainfall
In Los Serranos, in September, during 1.2 rainfall days, 0.04" (1mm) of precipitation is typically accumulated. Throughout the year, in Los Serranos, there are 36.5 rainfall days, and 3.15" (80mm) of precipitation is accumulated.Daylight
The average length of the day in September in Los Serranos is 12h and 22min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:35 pm PDT.
Sunshine
The average sunshine in September in Los Serranos, California, is 10.7h.UV index
In September, the average daily maximum UV index in Los Serranos is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a regular UV index of 6 translates into these guidelines:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
How hot does it get in Los Serranos in September?
What is the average humidity in September in Los Serranos?
How many days does it rain in September in Los Serranos?
How many hours of daylight does Los Serranos have in September?
When are sunrise and sunset in September in Los Serranos?
How long on average sun shines in September in Los Serranos?
What is the UV index intensity in September in Los Serranos?
Average temperature in September
Los Serranos, CA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is December (64.4°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is August (66.6°F).
The coldest month (with the lowest average low temperature) is February (47.3°F).
Average pressure in September
Los Serranos, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Los Serranos, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in September
Los Serranos, CA
- Average humidity in September: 47%
The month with the highest relative humidity is May (57%).
The month with the lowest relative humidity is November (45%).
Average rainfall in September
Los Serranos, CA
- Average rainfall in September: 0.04"
The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is June (0").
Average rainfall days in September
Los Serranos, CA
- Average rainfall days in September: 1.2 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).
Average daylight in September /
Average sunshine in September
Los Serranos, 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 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Los Serranos, CA
- Average sunshine days in September: 27.5 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is February (22.8 days).
Average UV index in September
Los Serranos, CA
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in September
Los Serranos, CA
- Average cloud cover in September: 7
The months with the most cloud cover are February, March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Los Serranos, 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).
Los Serranos, California, USA
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