September weather forecast and climate
Northport, AL

Weather in September

The first month of the autumn, September, is still a hot month in Northport, Alabama, with average temperature ranging between max 86.4°F (30.2°C) and min 66.7°F (19.3°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still hot 86.4°F (30.2°C). In September, the average low-temperature is 66.7°F (19.3°C).

Heat index

In September, the average heat index is estimated at a torrid 96.8°F (36°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 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like pregnancy, differences in body mass, height, and shape, wind, 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 especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September is 72%.

Rainfall

In Northport, Alabama, during 13.9 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Northport, there are 172.6 rainfall days, and 40.94" (1040mm) of precipitation is accumulated.

Snowfall

In Northport snow does not fall in March through October.

Daylight

The average length of the day in Northport is 12.4h.

Sunshine

In September, the average sunshine is 9.3h.

UV index

In September, the average daily maximum UV index in Northport is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Northport?

In September, in Northport, Alabama, the average high-temperature is 86.4°F (30.2°C), and the average low-temperature is 66.7°F (19.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines relative humidity and air temperature, in September is evaluated at 96.8°F (36°C).

What is the average humidity in September in Northport?

The average relative humidity in September in Northport, Alabama, is 72%.

How many days does it rain in September in Northport?

In Northport, during September, the rain falls for 13.9 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow in Northport?

In Northport snow does not fall in March through October.

How many hours of daylight does Northport have in September?

The average length of the day in September is 12.4h.

How many hours of sunshine does Northport have in September?

In Northport, the average sunshine in September is 9.3h.

What is the UV index intensity in September in Northport?

In September, the average daily maximum UV index in Northport is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Northport, AL

Average temperature in September - Northport, AL
  • Average high temperature in September: 86.4°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (52.2°F).

  • Average low temperature in September: 66.7°F

The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).

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Average pressure in September
Northport, AL

Average pressure in September - Northport, AL
  • Average pressure in September: 30"

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

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Average wind speed in September
Northport, AL

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

The windiest months (with the highest average wind speed) are February, March and April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Northport, AL

Average humidity in September - Northport, 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
Northport, AL

Average rainfall in September - Northport, AL
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is April (4.37").
The driest month (with the least rainfall) is October (2.4").

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Average rainfall days in September
Northport, AL

Average rainfall days in September - Northport, AL
  • Average rainfall days in September: 13.9 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (9.2 days).

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Average snowfall in September
Northport, AL

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

The month with the highest snowfall is December (0.39").
Months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in September
Northport, AL

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

The month with the highest number of snowfall days is January (1 days).
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
Northport, AL

Average daylight in September / Average sunshine in September - Northport, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.3h

The month with the most sunshine is June (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 4.8h).

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Average sunshine days in September
Northport, AL

Average sunshine days in September - Northport, AL
  • Average sunshine days in September: 13.3 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (8 days).

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Average UV index in September
Northport, AL

Average UV index in September - Northport, AL
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in September
Northport, AL

Average cloud cover in September - Northport, AL
  • Average cloud cover in September: 28

Months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 28).

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Average visibility in September
Northport, AL

Average visibility in September - Northport, AL
  • Average visibility in September: 6mi

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

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