September weather forecast and climate
Jackson, AL

Weather in September

September, the first month of the autumn, in Jackson, is still a hot month, with temperature in the range of an average high of 88.5°F (31.4°C) and an average low of 68°F (20°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still tropical 88.5°F (31.4°C). In September, the average low-temperature is 68°F (20°C).

Heat index

The average heat index in September is evaluated at an extremely hot 104.7°F (40.4°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like metabolic differences, wind, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Jackson, during September, the rain falls for 16.5 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Jackson, during the entire year, the rain falls for 173.9 days and collects up to 35.63" (905mm) of precipitation.

Snowfall

April through November are months without snowfall in Jackson.

Daylight

In September, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine in Jackson, Alabama, is 8.8h.

UV index

In Jackson, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Jackson?

In Jackson, in September, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 68°F (20°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, is evaluated at 104.7°F (40.4°C).

What is the average humidity in September in Jackson?

The average relative humidity in September in Jackson is 75%.

How many days does it rain in September in Jackson?

In September, in Jackson, the rain falls for 16.5 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

When it does not snow in Jackson?

April through November are months without snowfall in Jackson.

How many hours of daylight does Jackson have in September?

In Jackson, the average length of the day in September is 12.3h.

How many hours of sunshine does Jackson have in September?

In September, the average sunshine in Jackson, Alabama, is 8.8h.

What is the UV index intensity in September in Jackson?

The average daily maximum UV index in September in Jackson, Alabama, is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Jackson, AL

Average temperature in September - Jackson, AL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

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Average pressure in September
Jackson, AL

Average pressure in September - Jackson, AL
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.96").

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Average wind speed in September
Jackson, AL

Average wind speed in September - Jackson, AL
  • Average wind speed in September: 4.4mph

The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

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Average humidity in September
Jackson, AL

Average humidity in September - Jackson, 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%).

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Average rainfall in September
Jackson, AL

Average rainfall in September - Jackson, AL
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is July (4.41").
The driest month (with the least rainfall) is November (2.05").

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Average rainfall days in September
Jackson, AL

Average rainfall days in September - Jackson, AL
  • Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is November (8 days).

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Average snowfall in September
Jackson, AL

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

The month with the highest snowfall is January (0.16").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Jackson, AL

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

The month with the highest number of snowfall days is January (0.5 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Jackson, AL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Jackson, AL

Average sunshine days in September - Jackson, AL
  • Average sunshine days in September: 11.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (4.4 days).

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Average UV index in September
Jackson, AL

Average UV index in September - Jackson, AL
  • 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 and December (UV index 3).

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Average cloud cover in September
Jackson, AL

Average cloud cover in September - Jackson, AL
  • Average cloud cover in September: 34

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in September
Jackson, AL

Average visibility in September - Jackson, AL
  • Average visibility in September: 5mi

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

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