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
An average high-temperature of a still hot 86.2°F (30.1°C) marks September, exhibiting a close resemblance to the conditions in August. September nights in La Puente indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to an enjoyable 64.4°F (18°C).Heat index
September's average heat index is evaluated at a hot 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Consider that heat index readings are for situations in the shade and light wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 remain especially vital for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
The average relative humidity in September in La Puente is 50%.Rainfall
In September, the rain falls for 2.2 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. In La Puente, during the entire year, the rain falls for 41.3 days and collects up to 5.35" (136mm) of precipitation.Daylight
In La Puente, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:46 am and sunset at 6:36 pm PDT.
Sunshine
In La Puente, California, the average sunshine in September is 10.7h.UV index
In La Puente, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Shield from overexposure. Defense against sun-related harm is required. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in La Puente in September?
What is the average humidity in September in La Puente?
How many days does it rain in September in La Puente?
How many hours of daylight does La Puente have in September?
When are sunrise and sunset in September in La Puente?
How many hours of sunshine does La Puente have in September?
What is the UV index intensity in September in La Puente?
Average temperature in September
La Puente, CA
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is December (64.6°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48°F).
Average pressure in September
La Puente, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
La Puente, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.6mph).
Average humidity in September
La Puente, CA
- Average humidity in September: 50%
The months with the highest relative humidity are May and June (58%).
The month with the lowest relative humidity is November (46%).
Average rainfall in September
La Puente, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is December (1.3").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
La Puente, CA
- Average rainfall days in September: 2.2 days
The month with the highest number of rainy days is March (5.9 days).
The month with the least rainy days is August (1.2 days).
Average daylight in September /
Average sunshine in September
La Puente, 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
La Puente, CA
- Average sunshine days in September: 26.6 days
The months with the most sunshine days are June and August (27.9 days).
The month with the least sunshine days is February (22.3 days).
Average UV index in September
La Puente, CA
- Average UV index in September: 6
The month with the highest UV index is 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
La Puente, CA
- Average cloud cover in September: 8
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 5).
Average visibility in September
La Puente, 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).
La Puente, California, USA
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