September weather forecast
Deluz, CA

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Weather in September

The first month of the autumn, September, is still a warm month in Deluz, California, with an average temperature ranging between max 81.7°F (27.6°C) and min 61.9°F (16.6°C).

Temperature

Deluz, California, signifies an average high-temperature of a still moderately hot 81.7°F (27.6°C) in September, closely mirroring the 83.3°F (28.5°C) of August. In the month of September, an average of 61.9°F (16.6°C) marks the low-temperature.

Heat index

The heat index value during September is calculated to be 84.2°F (29°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in September is 61%.

Rainfall

In Deluz, California, during September, the rain falls for 4.4 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Deluz, during the entire year, the rain falls for 63.6 days and collects up to 8.98" (228mm) of precipitation.

Daylight

The average length of the day in September 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

In September, the average sunshine is 10.5h.

UV index

The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

In Deluz, in September, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is calculated to be 84.2°F (29°C).

What is the average humidity in September?

The average relative humidity in September is 61%.

How much does it rain in September?

In Deluz, in September, during 4.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

What is the average length of the day in September in Deluz?

The average day length in September is 12h and 22min.

When are sunrise and sunset in September?

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.

How long on average sun shines in September?

In September, the average sunshine duration is 10.5h.

What are the months with the highest UV index?

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

How high is the UV index in September in Deluz?

In Deluz, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Deluz, CA

Average temperature in September - Deluz, CA
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (63°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is August (63°F).
The coldest months (with the lowest average low temperature) are February and December (46.9°F).

Average pressure in September
Deluz, CA

Average pressure in September - Deluz, CA
  • Average pressure in September: 29.88"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Deluz, CA

Average wind speed in September - Deluz, CA
  • Average wind speed in September: 4.4mph

The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).

Average humidity in September
Deluz, CA

Average humidity in September - Deluz, CA
  • Average humidity in September: 61%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is November (55%).

Average rainfall in September
Deluz, CA

Average rainfall in September - Deluz, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in September
Deluz, CA

Average rainfall days in September - Deluz, CA
  • Average rainfall days in September: 4.4 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.2 days).

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

Average daylight in September / Average sunshine in September - Deluz, 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 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 36min).

Average sunshine days in September
Deluz, CA

Average sunshine days in September - Deluz, CA
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).

Average UV index in September
Deluz, CA

Average UV index in September - Deluz, 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
Deluz, CA

Average cloud cover in September - Deluz, CA
  • Average cloud cover in September: 10

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).

Average visibility in September
Deluz, CA

Average visibility in September - Deluz, 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).

Deluz, California, USA

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