September weather forecast and climate
Robertsdale, AL

Weather in September

The first month of the autumn, September, is also a hot month in Robertsdale, Alabama, with average temperature varying between 86.9°F (30.5°C) and 72.7°F (22.6°C).

Temperature

In Robertsdale, the average high-temperature is practically the same as in August - a still hot 86.9°F (30.5°C). In September, in Robertsdale, the average low-temperature is 72.7°F (22.6°C).

Heat index

In September, the average heat index is estimated at a torrid 99.9°F (37.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index 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. Excessive warmth is eliminated from the body by evaporation of sweat. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity in Robertsdale is 75%.

Rainfall

In September, in Robertsdale, Alabama, the rain falls for 16.9 days. Throughout September, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 165.7 rainfall days, and 31.46" (799mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall in Robertsdale.

Daylight

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

Sunshine

In Robertsdale, the average sunshine is 9.7h.

UV index

In Robertsdale, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Robertsdale?

In Robertsdale, in September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 72.7°F (22.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that represents influence of the relative humidity to air temperaure, in September is appraised at 99.9°F (37.7°C).

What is the average humidity in September in Robertsdale?

In September, the average relative humidity in Robertsdale is 75%.

How many days does it rain in September in Robertsdale?

In September, in Robertsdale, the rain falls for 16.9 days. Throughout September, 3.11" (79mm) of precipitation is accumulated.

When it does not snow in Robertsdale?

February through November are months without snowfall in Robertsdale, Alabama.

What is the average length of the day in September in Robertsdale?

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

How many hours of sunshine does Robertsdale have in September?

The average sunshine in September in Robertsdale is 9.7h.

What is the UV index reading in September in Robertsdale?

In September, the average daily maximum UV index in Robertsdale is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Robertsdale, AL

Average temperature in September - Robertsdale, AL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (58.8°F).

  • Average low temperature in September: 72.7°F

The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).

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Average pressure in September
Robertsdale, AL

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

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

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Average wind speed in September
Robertsdale, AL

Average wind speed in September - Robertsdale, AL
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are January, March and April (7.9mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in September
Robertsdale, AL

Average humidity in September - Robertsdale, AL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Robertsdale, AL

Average rainfall in September - Robertsdale, AL
  • Average rainfall in September: 3.11"

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (1.57").

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Average rainfall days in September
Robertsdale, AL

Average rainfall days in September - Robertsdale, AL
  • Average rainfall days in September: 16.9 days

The month with the highest number of rainy days is July (22.9 days).
The month with the least rainy days is November (8.4 days).

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Average snowfall days in September
Robertsdale, AL

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

The month with the highest number of snowfall days is January (0.2 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in September: 9.7h

The month with the most sunshine is June (Average sunshine: 11h).
Months with the least sunshine are February and December (Average sunshine: 5.4).

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Average sunshine days in September
Robertsdale, AL

Average sunshine days in September - Robertsdale, AL
  • Average sunshine days in September: 11 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (5.8 days).

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Average UV index in September
Robertsdale, AL

Average UV index in September - Robertsdale, AL
  • Average UV index in September: 6

Months with the highest UV index are May, 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
Robertsdale, AL

Average cloud cover in September - Robertsdale, AL
  • Average cloud cover in September: 25

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 23).

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Average visibility in September
Robertsdale, AL

Average visibility in September - Robertsdale, 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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