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
With September's arrival, Las Lomas's weather records an average high-temperature of a still warm 77.9°F (25.5°C), marking little difference from August's 78.1°F (25.6°C). Despite the intense daytime heat, Las Lomas sustains a steady low-temperature average of 54.9°F (12.7°C) during September.Humidity
The months with the lowest humidity in Las Lomas are September and October, with an average relative humidity of 65%.Rainfall
In Las Lomas, during September, the rain falls for 2.5 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Las Lomas, during the entire year, the rain falls for 68.3 days and collects up to 11.38" (289mm) of precipitation.Daylight
In Las Lomas, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:34 pm. On the last day of September, in Las Lomas, sunrise is at 7:02 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine in Las Lomas is 11.3h.UV index
The months with the highest UV index are April, June through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. To guard against the harmful effects of the Sun, minimize exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What is the temperature in September in Las Lomas?
What is the least humid month in Las Lomas?
What is the average humidity in September in Las Lomas?
How many days does it rain in September in Las Lomas?
How many hours of daylight does Las Lomas have in September?
When are sunrise and sunset in September in Las Lomas?
How many hours of sunshine does Las Lomas have in September?
What is the month with the highest UV index in Las Lomas?
What is the UV index reading in September in Las Lomas?
Average temperature in September
Las Lomas, CA
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (57.9°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is September (54.9°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).
Average pressure in September
Las Lomas, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in September
Las Lomas, CA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are January, August, September, October and November (4.7mph).
Average humidity in September
Las Lomas, CA
- Average humidity in September: 65%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (65%).
Average rainfall in September
Las Lomas, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is December (2.13").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Las Lomas, CA
- Average rainfall days in September: 2.5 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Las Lomas, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Las Lomas, CA
- Average sunshine days in September: 27 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.6 days).
Average UV index in September
Las Lomas, CA
- Average UV index in September: 5
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Las Lomas, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Las Lomas, 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).
Las Lomas, California, USA
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