September weather forecast
Sullivan Crossroads, AL

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Weather in September

The first month of the autumn, September, is still a warm month in Sullivan Crossroads, Alabama, with an average temperature fluctuating between 82.8°F (28.2°C) and 63.5°F (17.5°C).

Temperature

As August transitions into September, Sullivan Crossroads records an average high-temperature of a warm 82.8°F (28.2°C), showing a gentle shift from the preceding month. September nights are marked by an average low-temperature of 63.5°F (17.5°C).

Heat index

Throughout September, the heat index is calculated to be a tropical 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

In Sullivan Crossroads, the average relative humidity in September is 74%.

Rainfall

In Sullivan Crossroads, in September, during 14.2 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Sullivan Crossroads, during the entire year, the rain falls for 178.6 days and collects up to 41.26" (1048mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:36 pm CDT.

Sunshine

In Sullivan Crossroads, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the UV index of 5 transforms into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

In Sullivan Crossroads, 82.8°F (28.2°C) is the average high-temperature and 63.5°F (17.5°C) is the average low-temperature during September. The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 89.6°F (32°C).

What is the average humidity in September?

In Sullivan Crossroads, the average relative humidity in September is 74%.

How many days does it rain in September?

In September, the rain falls for 14.2 days. Throughout September, 2.68" (68mm) of precipitation is accumulated.

When it does not snow in Sullivan Crossroads?

In Sullivan Crossroads, snow does not fall in April through October.

What is the average length of the day in September?

In Sullivan Crossroads, the average day length in September is 12h and 23min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:36 pm CDT.

How many hours of sunshine does Sullivan Crossroads have in September?

The average sunshine duration in September is 8.9h.

How high is the UV index in September?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
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
Sullivan Crossroads, AL

Average temperature in September - Sullivan Crossroads, AL
  • Average high temperature in September: 82.8°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (47.7°F).

  • Average low temperature in September: 63.5°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

Average pressure in September
Sullivan Crossroads, AL

Average pressure in September - Sullivan Crossroads, AL
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in September
Sullivan Crossroads, AL

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

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

Average humidity in September
Sullivan Crossroads, AL

Average humidity in September - Sullivan Crossroads, AL
  • Average humidity in September: 74%

The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Sullivan Crossroads, AL

Average rainfall in September - Sullivan Crossroads, AL
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is February (4.53").
The driest month (with the least rainfall) is November (2.56").

Average rainfall days in September
Sullivan Crossroads, AL

Average rainfall days in September - Sullivan Crossroads, AL
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (10.5 days).

Average snowfall in September
Sullivan Crossroads, AL

Average snowfall in September - Sullivan Crossroads, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Sullivan Crossroads, AL

Average snowfall days in September - Sullivan Crossroads, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Sullivan Crossroads, AL

Average daylight in September / Average sunshine in September - Sullivan Crossroads, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days in September
Sullivan Crossroads, AL

Average sunshine days in September - Sullivan Crossroads, AL
  • Average sunshine days in September: 14.2 days

The months with the most sunshine days are October and November (17.6 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in September
Sullivan Crossroads, AL

Average UV index in September - Sullivan Crossroads, AL
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Sullivan Crossroads, AL

Average cloud cover in September - Sullivan Crossroads, AL
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Sullivan Crossroads, AL

Average visibility in September - Sullivan Crossroads, 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).

Sullivan Crossroads, Alabama, USA

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