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 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
The advent of September signifies a minor shift to an average high-temperature of a warm 85.3°F (29.6°C), aligning closely with August. During September, La Cresta detects a significant contrast from its daytime temperatures, with nights averaging at an enjoyable 61.5°F (16.4°C).Heat index
In September, the average heat index is calculated to be a hot 87.8°F (31°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In La Cresta, the average relative humidity in September is 51%.Rainfall
In La Cresta, in September, during 4.1 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In La Cresta, during the entire year, the rain falls for 64.9 days and collects up to 9.8" (249mm) of precipitation.Snowfall
January, March through November are months without snowfall in La Cresta, California.Daylight
The average length of the day in September in La Cresta is 12h and 22min.On the first day of September, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.
Sunshine
The average sunshine in September in La Cresta is 10.5h.UV index
The months with the highest UV index in La Cresta, California, are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
Is it hot in La Cresta during September?
What is the average humidity in September in La Cresta?
How much does it rain in La Cresta in September?
When it does not snow in La Cresta?
How many hours of daylight does La Cresta have in September?
When is the sunrise / sunset in September in La Cresta?
How long on average sun shines in September in La Cresta?
What is the month with the highest UV index in La Cresta?
What is the UV index reading in September in La Cresta?
Average temperature in September
La Cresta, CA
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in September: 61.5°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is December (43.2°F).
Average pressure in September
La Cresta, CA
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
La Cresta, CA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is April (5.4mph).
The calmest months (with the lowest average wind speed) are August and September (4.2mph).
Average humidity in September
La Cresta, CA
- Average humidity in September: 51%
The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
La Cresta, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is February (1.89").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
La Cresta, CA
- Average rainfall days in September: 4.1 days
The month with the highest number of rainy days is March (8.5 days).
The month with the least rainy days is June (1.7 days).
Average snowfall in September
La Cresta, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
La Cresta, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
La Cresta, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
La Cresta, CA
- Average sunshine days in September: 22.6 days
The month with the most sunshine days is June (26.3 days).
The month with the least sunshine days is February (20.7 days).
Average UV index in September
La Cresta, 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 November and December (UV index 3).
Average cloud cover in September
La Cresta, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
La Cresta, 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 Cresta, California, USA
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