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
La Mirada's shift into September sets the average high-temperature at a still moderately hot 83.7°F (28.7°C), a figure that deviates only slightly from August's 84.7°F (29.3°C). An average nighttime temperature of 65.1°F (18.4°C) is noted in La Mirada during the month of September.Heat index
September's mean heat index is appraised at a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In La Mirada, California, the average relative humidity in September is 56%.Rainfall
In La Mirada, in September, during 2.8 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, there are 45.9 rainfall days, and 6.81" (173mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of September, in La Mirada, sunrise is at 6:46 am and sunset at 6:37 pm PDT.
Sunshine
In La Mirada, the average sunshine in September is 10.6h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 6 during September translates into the following directions:
Guard oneself from overexposure. Defence against sun injury is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
How hot is it in La Mirada in September?
What is the average humidity in September in La Mirada?
How many days does it rain in September in La Mirada?
What is the average length of the day in September in La Mirada?
When are sunrise and sunset in September in La Mirada?
How long on average sun shines in September in La Mirada?
What are the months with the highest UV index in La Mirada?
How high is the UV index in September in La Mirada?
Average temperature in September
La Mirada, CA
- Average high temperature in September: 83.7°F
The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (64.9°F).
- Average low temperature in September: 65.1°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 (50.4°F).
Average pressure in September
La Mirada, 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 Mirada, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is October (4.7mph).
Average humidity in September
La Mirada, CA
- Average humidity in September: 56%
The month with the highest relative humidity is June (64%).
The month with the lowest relative humidity is November (49%).
Average rainfall in September
La Mirada, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
La Mirada, CA
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.3 days).
Average daylight in September /
Average sunshine in September
La Mirada, 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 months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).
Average sunshine days in September
La Mirada, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is August (26.4 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in September
La Mirada, 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 February, November and December (UV index 4).
Average cloud cover in September
La Mirada, 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
La Mirada, 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 Mirada, California, USA
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