September weather forecast
Duff Settlement, AL

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Weather in September

The first month of the autumn, September, is still a hot month in Duff Settlement, Alabama, with an average temperature fluctuating between 66.9°F (19.4°C) and 86.5°F (30.3°C).

Temperature

Duff Settlement's average high-temperature in September is a still tropical 86.5°F (30.3°C), indicating a subtle variation from August. In Duff Settlement, the expected average low-temperature for September is an enjoyable 66.9°F (19.4°C).

Heat index

For most parts of September, the heat index is estimated at a very hot 96.8°F (36°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in September in Duff Settlement is 72%.

Rainfall

September is the month with the least rainfall in Duff Settlement. Rain falls for 9.8 days and accumulates 0.59" (15mm) of precipitation.

Snowfall

March through November are months without snowfall in Duff Settlement.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September in Duff Settlement, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:34 pm CDT.

Sunshine

The average sunshine in September in Duff Settlement is 9.1h.

UV index

The average daily maximum UV index in September in Duff Settlement, Alabama, is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot is September in Duff Settlement?

Duff Settlement in September has an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 66.9°F (19.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 96.8°F (36°C).

What is the average humidity in September in Duff Settlement?

The average relative humidity in September is 72%.

What is the driest month in Duff Settlement?

The month with the least rainfall is September, when the rain falls for 9.8 days and typically collects 0.59" (15mm) of precipitation.

How many days does it rain in September in Duff Settlement?

In Duff Settlement, Alabama, during September, the rain falls for 9.8 days and regularly aggregates up to 0.59" (15mm) of precipitation.

When it does not snow in Duff Settlement?

March through November are months without snowfall.

What is the average length of the day in September in Duff Settlement?

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

What time are sunrise and sunset in September in Duff Settlement?

On the first day of September, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:34 pm CDT.

How many hours of sunshine does Duff Settlement have in September?

The average sunshine duration in September in Duff Settlement, Alabama, is 9.1h.

What is the UV index reading in September in Duff Settlement?

In September, the average daily maximum UV index in Duff Settlement, Alabama, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe 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
Duff Settlement, AL

Average temperature in September - Duff Settlement, AL
  • Average high temperature in September: 86.5°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (52.7°F).

  • Average low temperature in September: 66.9°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).

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Average pressure in September
Duff Settlement, AL

Average pressure in September - Duff Settlement, AL
  • Average pressure in September: 30"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).

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Average wind speed in September
Duff Settlement, AL

Average wind speed in September - Duff Settlement, AL
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Duff Settlement, AL

Average humidity in September - Duff Settlement, AL
  • Average humidity in September: 72%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Duff Settlement, AL

Average rainfall in September - Duff Settlement, AL
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.59").

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Average rainfall days in September
Duff Settlement, AL

Average rainfall days in September - Duff Settlement, AL
  • Average rainfall days in September: 9.8 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (6 days).

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Average snowfall in September
Duff Settlement, AL

Average snowfall in September - Duff Settlement, AL
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Duff Settlement, AL

Average snowfall days in September - Duff Settlement, AL
  • Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Duff Settlement, AL

Average daylight in September / Average sunshine in September - Duff Settlement, 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: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

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Average sunshine days in September
Duff Settlement, AL

Average sunshine days in September - Duff Settlement, AL
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is October (23.3 days).
The month with the least sunshine days is July (10 days).

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Average UV index in September
Duff Settlement, AL

Average UV index in September - Duff Settlement, 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, February and December (UV index 3).

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Average cloud cover in September
Duff Settlement, AL

Average cloud cover in September - Duff Settlement, AL
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in September
Duff Settlement, AL

Average visibility in September - Duff Settlement, 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).

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Duff Settlement, Alabama, USA

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