September weather forecast and climate
Graham, AL

Weather in September

September, the first month of the autumn, in Graham, is also a moderately hot month, with average temperature varying between 63.7°F (17.6°C) and 83.3°F (28.5°C).

Temperature

In Graham, the average high-temperature is practically the same as in August - a moderately hot 83.3°F (28.5°C). In September, in Graham, Alabama, the average low-temperature is 63.7°F (17.6°C).

Heat index

The average heat index in September is estimated at a tropical 90.9°F (32.7°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like pregnancy, 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 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.

Humidity

In Graham, the average relative humidity is 76%.

Rainfall

In Graham, Alabama, during 14.4 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Graham, during the entire year, the rain falls for 182.8 days and collects up to 41.5" (1054mm) of precipitation.

Snowfall

April through October are months without snowfall in Graham, Alabama.

Daylight

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

Sunshine

In September, the average sunshine in Graham, Alabama, is 8.5h.

UV index

In September, the average daily maximum UV index in Graham, Alabama, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Graham?

In September, in Graham, Alabama, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 63.7°F (17.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines both air temperature and relative humidity, is estimated at 90.9°F (32.7°C).

What is the average humidity in September in Graham?

In September, the average relative humidity is 76%.

How much does it rain in Graham in September?

In Graham, in September, during 14.4 rainfall days, 2.87" (73mm) of precipitation is typically accumulated.

When it does not snow in Graham?

April through October are months without snowfall in Graham, Alabama.

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

In Graham, Alabama, the average length of the day in September is 12.4h.

How long on average sun shines in September in Graham?

In September, the average sunshine in Graham, Alabama, is 8.5h.

What is the UV index reading in September in Graham?

In Graham, Alabama, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Graham, AL

Average temperature in September - Graham, AL
  • Average high temperature in September: 83.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (50.5°F).

  • Average low temperature in September: 63.7°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).

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Average pressure in September
Graham, AL

Average pressure in September - Graham, AL
  • Average pressure in September: 30.02"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.99").

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Average wind speed in September
Graham, AL

Average wind speed in September - Graham, AL
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in September
Graham, AL

Average humidity in September - Graham, AL
  • Average humidity in September: 76%

The month with the highest relative humidity is December (80%).
Months with the lowest relative humidity are October and November (74%).

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Average rainfall in September
Graham, AL

Average rainfall in September - Graham, AL
  • Average rainfall in September: 2.87"

The wettest month (with the highest rainfall) is August (4.92").
The driest month (with the least rainfall) is October (2.09").

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Average rainfall days in September
Graham, AL

Average rainfall days in September - Graham, AL
  • Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is July (23.2 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in September
Graham, AL

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

The month with the highest snowfall is January (0.71").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Graham, AL

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

The month with the highest number of snowfall days is January (1.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Graham, 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: 8.5h

Months with the most sunshine are June and July (Average sunshine: 10.2h).
The month with the least sunshine is December (Average sunshine: 4.8h).

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Average sunshine days in September
Graham, AL

Average sunshine days in September - Graham, AL
  • Average sunshine days in September: 14.1 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (6.3 days).

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Average UV index in September
Graham, AL

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

Months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Graham, AL

Average cloud cover in September - Graham, AL
  • Average cloud cover in September: 33

Months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 32).

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Average visibility in September
Graham, AL

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

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

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