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 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
As August turns into September, the average high-temperatures rest at a moderately hot 85.6°F (29.8°C), showing a minor variation from the prior month. Despite the intense daytime heat, Azusa sustains a steady low-temperature average of 63.1°F (17.3°C) during September.Heat index
The average heat index in September is computed to be a tropical 86°F (30°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The average relative humidity in September in Azusa is 47%.Rainfall
In Azusa, in September, during 2.3 rainfall days, 0.12" (3mm) of precipitation is typically accumulated. Throughout the year, there are 50.5 rainfall days, and 8.35" (212mm) of precipitation is accumulated.Snowfall
In Azusa, snow does not fall in January, March through December.Daylight
In Azusa, 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, in Azusa, sunrise is at 6:46 am and sunset at 6:36 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
In Azusa, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
How hot is September in Azusa?
What is the average humidity in September in Azusa?
How much does it rain in Azusa in September?
When it does not snow in Azusa?
What is the average length of the day in September in Azusa?
When is the sunrise / sunset in September in Azusa?
How many hours of sunshine does Azusa have in September?
What is the UV index reading in September in Azusa?
Average temperature in September
Azusa, CA
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is December (45.9°F).
Average pressure in September
Azusa, 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 (29.87"Hg).
Average wind speed in September
Azusa, CA
- Average wind speed in September: 4.4mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in September
Azusa, CA
- Average humidity in September: 47%
The month with the highest relative humidity is May (56%).
The month with the lowest relative humidity is November (45%).
Average rainfall in September
Azusa, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Azusa, CA
- Average rainfall days in September: 2.3 days
The month with the highest number of rainy days is March (7 days).
The month with the least rainy days is June (1.3 days).
Average snowfall days in September
Azusa, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Azusa, 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 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 54min).
Average sunshine days in September
Azusa, CA
- Average sunshine days in September: 26.2 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.3 days).
Average UV index in September
Azusa, CA
- Average UV index in September: 6
The month with the highest UV index is August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Azusa, CA
- Average cloud cover in September: 6
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Azusa, 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).
Azusa, California, USA
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