September weather forecast and climate
Aurora, CA

Weather in September

September, the first month of the autumn, in Aurora, is also a hot month, with average temperature fluctuating between 59.9°F (15.5°C) and 90.9°F (32.7°C).

Temperature

In Aurora, California, the average high-temperature marginally drops, from a torrid 96.4°F (35.8°C) in August, to a tropical 90.9°F (32.7°C). In September, the average low-temperature is 59.9°F (15.5°C).

Heat index

In September, the average heat index is estimated at a tropical 92.3°F (33.5°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, wind, pregnancy), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Aurora, the average relative humidity in September is 41%.

Rainfall

In Aurora, in September, it is raining for 1.6 days, with typically 0.08" (2mm) of accumulated precipitation. Throughout the year, there are 54.3 rainfall days, and 6.54" (166mm) of precipitation is accumulated.

Daylight

In Aurora, the average length of the day is 12.4h.

Sunshine

In Aurora, the average sunshine is 11.5h.

UV index

In Aurora, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Aurora?

In September, the average high-temperature is 90.9°F (32.7°C), and the average low-temperature is 59.9°F (15.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, in September is calculated to 92.3°F (33.5°C).

What is the average humidity in September in Aurora?

In September, the average relative humidity in Aurora is 41%.

How many days does it rain in September in Aurora?

In Aurora, in September, it is raining for 1.6 days, with typically 0.08" (2mm) of accumulated precipitation.

How many hours of daylight does Aurora have in September?

In Aurora, the average length of the day in September is 12.4h.

How many hours of sunshine does Aurora have in September?

In Aurora, the average sunshine in September is 11.5h.

How high is the UV index in September in Aurora?

The average daily maximum UV index in September in Aurora, California, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Aurora, CA

Average temperature in September - Aurora, CA
  • Average high temperature in September: 90.9°F

The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (62.1°F).
The coldest months (with the lowest average low temperature) are January and December (41.9°F).

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Average pressure in September
Aurora, CA

Average pressure in September - Aurora, CA
  • Average pressure in September: 29.93"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
Aurora, CA

Average wind speed in September - Aurora, CA
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).

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Average humidity in September
Aurora, CA

Average humidity in September - Aurora, CA
  • Average humidity in September: 41%

The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).

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Average rainfall in September
Aurora, CA

Average rainfall in September - Aurora, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is March (1.3").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Aurora, CA

Average rainfall days in September - Aurora, CA
  • Average rainfall days in September: 1.6 days

The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).

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

Average daylight in September / Average sunshine in September - Aurora, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 11.5h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6h).

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Average sunshine days in September
Aurora, CA

Average sunshine days in September - Aurora, CA
  • Average sunshine days in September: 27.1 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (19.6 days).

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Average UV index in September
Aurora, CA

Average UV index in September - Aurora, CA
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Aurora, CA

Average cloud cover in September - Aurora, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in September
Aurora, CA

Average visibility in September - Aurora, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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