September weather forecast
Old Salem, AL

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Weather in September

The first month of the autumn, September, is still a tropical month in Old Salem, Alabama, with temperature in the range of an average high of 88°F (31.1°C) and an average low of 68°F (20°C).

Temperature

September brings an average high-temperature of a still hot 88°F (31.1°C), nearly identical to the preceding month. Old Salem in September experiences a low-temperature average of 68°F (20°C).

Heat index

September's mean heat index is estimated at a very hot 102.2°F (39°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In September, the rain falls for 17 days. Throughout September, 2.52" (64mm) of precipitation is accumulated. In Old Salem, during the entire year, the rain falls for 174.1 days and collects up to 36.02" (915mm) of precipitation.

Snowfall

In Old Salem, snow does not fall in April through November.

Daylight

In Old Salem, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 6:25 am and sunset at 7:12 pm. On the last day of September, in Old Salem, sunrise is at 6:43 am and sunset at 6:35 pm CDT.

Sunshine

In Old Salem, the average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
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. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

How hot does it get in September?

The high-temperature during September is 88°F (31.1°C) and the low-temperature is 68°F (20°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in September is estimated at 102.2°F (39°C).

What is the average humidity in September?

In September, the average relative humidity in Old Salem, Alabama, is 75%.

How many days does it rain in September?

In Old Salem, in September, during 17 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

When it does not snow?

April through November are months without snowfall.

What is the average length of the day in September?

In Old Salem, the average day length in September is 12h and 21min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:25 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:35 pm CDT.

How long on average sun shines in September in Old Salem?

The average sunshine duration in September is 8.7h.

How high is the UV index in September?

In Old Salem, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Old Salem, AL

Average temperature in September - Old Salem, AL
  • Average high temperature in September: 88°F

The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in September: 68°F

The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in September
Old Salem, AL

Average pressure in September - Old Salem, AL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed in September
Old Salem, AL

Average wind speed in September - Old Salem, AL
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are February, March and April (6.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in September
Old Salem, AL

Average humidity in September - Old Salem, AL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Old Salem, AL

Average rainfall in September - Old Salem, AL
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is August (4.49").
The driest month (with the least rainfall) is November (2.01").

Average rainfall days in September
Old Salem, AL

Average rainfall days in September - Old Salem, AL
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September
Old Salem, AL

Average snowfall in September - Old Salem, AL
  • Average snowfall in September: 0"

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

Average snowfall days in September
Old Salem, AL

Average snowfall days in September - Old Salem, AL
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Old Salem, AL

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

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Old Salem, AL

Average sunshine days in September - Old Salem, AL
  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (5.4 days).

Average UV index in September
Old Salem, AL

Average UV index in September - Old Salem, AL
  • Average UV index in September: 6

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

Average cloud cover in September
Old Salem, AL

Average cloud cover in September - Old Salem, AL
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).

Average visibility in September
Old Salem, AL

Average visibility in September - Old Salem, AL
  • Average visibility in September: 5mi

The months with the highest visibility are June and October (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September, November and December (5mi).

Old Salem, Alabama, USA

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