September weather forecast
Calabasas, CA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Calabasas, California, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 63.5°F (17.5°C).

Temperature

Calabasas's shift from August to September is accompanied by an average high-temperature of a still moderately hot 79.5°F (26.4°C), a slight deviation from 81.1°F (27.3°C). The average temperature during September nights dips to a refreshing 63.5°F (17.5°C).

Humidity

In Calabasas, the average relative humidity in September is 59%.

Rainfall

In Calabasas, in September, it is raining for 2.5 days, with typically 0.16" (4mm) of accumulated precipitation. Throughout the year, there are 49.2 rainfall days, and 9.09" (231mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:28 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:39 pm PDT.

Sunshine

In September, the average sunshine is 10.9h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Calabasas. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

What are the temperatures in September?

The high-temperature during September is 79.5°F (26.4°C) and the low-temperature is 63.5°F (17.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is computed to be 84.2°F (29°C).

What is the average humidity in September?

In September, the average relative humidity in Calabasas is 59%.

How many days does it rain in September?

In September, the rain falls for 2.5 days. Throughout September, 0.16" (4mm) of precipitation is accumulated.

How many hours of daylight does Calabasas have in September?

In Calabasas, California, the average day length in September is 12h and 22min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:28 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:39 pm PDT.

How long on average sun shines in September?

The average sunshine duration in September is 10.9h.

What is the month with the highest UV index?

The months with the highest UV index are June through September, with an average maximum UV index of 6.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Calabasas, CA

Average temperature in September - Calabasas, CA
  • Average high temperature in September: 79.5°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in September: 63.5°F

The month with the highest average low temperature is August (64.6°F).
The coldest months (with the lowest average low temperature) are February and December (49.1°F).

Average pressure in September
Calabasas, CA

Average pressure in September - Calabasas, CA
  • Average pressure in September: 29.9"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).

Average wind speed in September
Calabasas, CA

Average wind speed in September - Calabasas, CA
  • Average wind speed in September: 4.6mph

The windiest months (with the highest average wind speed) are April and December (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in September
Calabasas, CA

Average humidity in September - Calabasas, CA
  • Average humidity in September: 59%

The month with the highest relative humidity is June (67%).
The month with the lowest relative humidity is November (51%).

Average rainfall in September
Calabasas, CA

Average rainfall in September - Calabasas, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is February (1.97").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in September
Calabasas, CA

Average rainfall days in September - Calabasas, CA
  • Average rainfall days in September: 2.5 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.2 days).

Average daylight in September /
Average sunshine in September
Calabasas, CA

Average daylight in September / Average sunshine in September - Calabasas, 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, July and August (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

Average sunshine days in September
Calabasas, CA

Average sunshine days in September - Calabasas, CA
  • Average sunshine days in September: 25.2 days

The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21.2 days).

Average UV index in September
Calabasas, CA

Average UV index in September - Calabasas, 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 January, February, March, November and December (UV index 4).

Average cloud cover in September
Calabasas, CA

Average cloud cover in September - Calabasas, CA
  • Average cloud cover in September: 7

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
Calabasas, CA

Average visibility in September - Calabasas, 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).

Calabasas, California, USA

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