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 average high-temperature during September registers at a still warm 82.4°F (28°C), closely corresponding to the preceding month. In September, a remarkable difference from daytime highs is noted, as Alderglen Springs records an average temperature of 52.7°F (11.5°C) during the night.Heat index
September's mean heat index is estimated at 84.2°F (29°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.Note that heat index values are valued for light wind and location in the shade. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
July and September, with an average relative humidity of 57%, are the least humid months.Rainfall
In Alderglen Springs, during September, the rain falls for 2.2 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, in Alderglen Springs, there are 82.4 rainfall days, and 20.75" (527mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In September, the average length of the day in Alderglen Springs, California, is 12h and 25min.On the first day of September in Alderglen Springs, sunrise is at 6:41 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:55 pm PDT.
Sunshine
In Alderglen Springs, the average sunshine in September is 10.9h.UV index
In Alderglen Springs, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
How hot is it in Alderglen Springs in September?
What are the least humid months in Alderglen Springs?
What is the average humidity in September in Alderglen Springs?
How many days does it rain in September in Alderglen Springs?
When it does not snow in Alderglen Springs?
What is the average length of the day in September in Alderglen Springs?
What time are sunrise and sunset in September in Alderglen Springs?
How many hours of sunshine does Alderglen Springs have in September?
What is the UV index reading in September in Alderglen Springs?
Average temperature in September
Alderglen Springs, CA
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure in September
Alderglen Springs, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in September
Alderglen Springs, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in September
Alderglen Springs, CA
- Average humidity in September: 57%
The month with the highest relative humidity is March (77%).
The months with the lowest relative humidity are July and September (57%).
Average rainfall in September
Alderglen Springs, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is February (4.25").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Alderglen Springs, CA
- Average rainfall days in September: 2.2 days
The month with the highest number of rainy days is March (14.6 days).
The months with the least rainy days are July and August (1.2 days).
Average snowfall in September
Alderglen Springs, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Alderglen Springs, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.2 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
Alderglen Springs, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Alderglen Springs, CA
- Average sunshine days in September: 27.3 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in September
Alderglen Springs, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in September
Alderglen Springs, CA
- Average cloud cover in September: 10
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in September
Alderglen Springs, 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).
Alderglen Springs, California, USA
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