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 Cañada Flintridge experiences an average high-temperature of a moderately hot 84.6°F (29.2°C) with the onset of September, subtly varied from August's 86.2°F (30.1°C). September nights in La Cañada Flintridge present a stark temperature decrease to a refreshing 62.6°F (17°C).Heat index
The heat index value during September is evaluated at a tropical 86°F (30°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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 September, the average relative humidity in La Cañada Flintridge is 49%.Rainfall
In La Cañada Flintridge, in September, during 3 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, in La Cañada Flintridge, there are 52 rainfall days, and 8.82" (224mm) of precipitation is accumulated.Daylight
In La Cañada Flintridge, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:26 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:37 pm PDT.
Sunshine
In La Cañada Flintridge, the average sunshine in September is 10.8h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index in La Cañada Flintridge. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 6 in September suggests the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
How hot does it get in La Cañada Flintridge in September?
What is the average humidity in September in La Cañada Flintridge?
How many days does it rain in September in La Cañada Flintridge?
What is the average length of the day in September in La Cañada Flintridge?
When is the sunrise / sunset in September in La Cañada Flintridge?
How long on average sun shines in September in La Cañada Flintridge?
When is the highest UV index in La Cañada Flintridge?
What is the UV index intensity in September in La Cañada Flintridge?
Average temperature in September
La Cañada Flintridge, CA
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is August (86.2°F).
The month with the lowest average high temperature is December (61°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in September
La Cañada Flintridge, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
La Cañada Flintridge, 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
La Cañada Flintridge, CA
- Average humidity in September: 49%
The months with the highest relative humidity are March, May and June (56%).
The month with the lowest relative humidity is November (46%).
Average rainfall in September
La Cañada Flintridge, CA
- Average rainfall in September: 0.16"
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
La Cañada Flintridge, CA
- Average rainfall days in September: 3 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.3 days).
Average daylight in September /
Average sunshine in September
La Cañada Flintridge, 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 months with the most sunshine are June and 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
La Cañada Flintridge, CA
- Average sunshine days in September: 25.6 days
The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.3 days).
Average UV index in September
La Cañada Flintridge, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
La Cañada Flintridge, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
La Cañada Flintridge, 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 Cañada Flintridge, California, USA
Weather forecast for your location
2. Allow the app to use your location
