September weather forecast
Auburn, AL

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The campus at Auburn University in Alabama with the university chapel
The campus at Auburn University in Alabama with the university chapel

Weather in September

September brings a decrease in humidity and a slight drop in temperature in Auburn. The end of summer stirs a sense of relief among residents as the temperatures move from extreme to moderate. The onset of fall brings an array of vibrant colors, leaving the city irresistibly beautiful. Significant weather data reports a wind gust speed of 8.8mph (14.2km/h), the highest recorded since May. The arrival of October continues the downward temperature trend and gifts the city with an increase in windy days.

Temperature

The beginning of September records an average high-temperature of a still hot 86°F (30°C), marking a negligible difference from August's 90.1°F (32.3°C). Auburn experiences a steady low-temperature of 66.7°F (19.3°C) throughout September.

Heat index

The heat index value during September is estimated at a fiery hot 96.8°F (36°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In Auburn, the average relative humidity in September is 72%.

Rainfall

The month with the least rainfall is September, when the rain falls for 14.9 days and typically collects 2.17" (55mm) of precipitation.

Snowfall

In Auburn, snow does not fall in April through November.

Daylight

In Auburn, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:17 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:27 pm CDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 6 in September transforms into this advice:
Take precautions against overexposure. Protection against sun damage is needed. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

How hot is September?

In Auburn, in September, the average high-temperature is 86°F (30°C), and the average low-temperature is 66.7°F (19.3°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 96.8°F (36°C).

What is the average humidity in September?

In September, the average relative humidity is 72%.

What is the driest month in Auburn?

The month with the least rainfall is September, when the rain falls for 14.9 days and typically collects 2.17" (55mm) of precipitation.

How much does it rain in September?

In September, the rain falls for 14.9 days. Throughout September, 2.17" (55mm) of precipitation is accumulated.

When it does not snow?

April through November are months without snowfall.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

On the first day of September in Auburn, sunrise is at 6:17 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:27 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.5h.

How high is the UV index in September?

In Auburn, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Auburn, AL

Average temperature in September - Auburn, AL
  • Average high temperature in September: 86°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (54°F).

  • Average low temperature in September: 66.7°F

The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37.6°F).

Average pressure in September
Auburn, AL

Average pressure in September - Auburn, AL
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in September
Auburn, AL

Average wind speed in September - Auburn, AL
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in September
Auburn, AL

Average humidity in September - Auburn, AL
  • Average humidity in September: 72%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Auburn, AL

Average rainfall in September - Auburn, AL
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in September
Auburn, AL

Average rainfall days in September - Auburn, AL
  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is July (22.4 days).
The month with the least rainy days is November (8.1 days).

Average snowfall in September
Auburn, AL

Average snowfall in September - Auburn, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Auburn, AL

Average snowfall days in September - Auburn, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Auburn, AL

Average daylight in September / Average sunshine in September - Auburn, AL
  • 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: 8h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Auburn, AL

Average sunshine days in September - Auburn, AL
  • Average sunshine days in September: 13.4 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (6.4 days).

Average UV index in September
Auburn, AL

Average UV index in September - Auburn, AL
  • Average UV index in September: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Auburn, AL

Average cloud cover in September - Auburn, AL
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 30).

Average visibility in September
Auburn, AL

Average visibility in September - Auburn, AL
  • 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).

Auburn, Alabama, USA

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