September weather forecast and climate
Grady, AL

Weather in September

September, the first month of the autumn, in Grady, is still a hot month, with temperature in the range of an average low of 67.8°F (19.9°C) and an average high of 86.9°F (30.5°C).

Temperature

In Grady, the average high-temperature is almost the same as in August - a still hot 86.9°F (30.5°C). In September, the average low-temperature is 67.8°F (19.9°C).

Heat index

The average heat index is estimated at a torrid 98.8°F (37.1°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, metabolic differences, clothing), 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 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 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 Grady is 73%.

Rainfall

In Grady, it is raining for 13.7 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, in Grady, Alabama, there are 153.1 rainfall days, and 31.46" (799mm) of precipitation is accumulated.

Snowfall

April through December are months without snowfall.

Daylight

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

Sunshine

The average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Grady?

The average high-temperature, in September, is 86.9°F (30.5°C), while the average low-temperature is 67.8°F (19.9°C). The average heat index (a.k.a. 'feels like', 'real feel'), that combines both air temperature and relative humidity, in September is estimated at 98.8°F (37.1°C).

What is the average humidity in September in Grady?

The average relative humidity in September is 73%.

How much does it rain in Grady in September?

In September, in Grady, the rain falls for 13.7 days. Throughout September, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in Grady?

April through December are months without snowfall in Grady, Alabama.

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

The average length of the day in September in Grady is 12.3h.

How long on average sun shines in September in Grady?

The average sunshine in September in Grady, Alabama, is 8.7h.

What is the UV index intensity in September in Grady?

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

Average temperature in September
Grady, AL

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

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (55.9°F).

  • Average low temperature in September: 67.8°F

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 (39.2°F).

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Average pressure in September
Grady, AL

Average pressure in September - Grady, AL
  • Average pressure in September: 29.99"

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

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Average wind speed in September
Grady, AL

Average wind speed in September - Grady, AL
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in September
Grady, AL

Average humidity in September - Grady, AL
  • Average humidity in September: 73%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Grady, AL

Average rainfall in September - Grady, AL
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is October (1.73").

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Average rainfall days in September
Grady, AL

Average rainfall days in September - Grady, AL
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is July (21.2 days).
The month with the least rainy days is November (5.9 days).

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Average snowfall in September
Grady, AL

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

Months with the highest snowfall are January and February (0.2").
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Grady, AL

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

Months with the highest number of snowfall days are January and February (0.3 days).
Months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Grady, 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: 8.7h

The month with the most sunshine is June (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.1h).

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Average sunshine days in September
Grady, AL

Average sunshine days in September - Grady, AL
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (8 days).

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Average UV index in September
Grady, AL

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

Months with the highest UV index are June and July (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
Grady, AL

Average cloud cover in September - Grady, AL
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in September
Grady, AL

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

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

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