September weather forecast and climate
Mellow Valley, AL

Weather in September

September, the first month of the autumn, in Mellow Valley, is still a warm month, with average temperature fluctuating between 84.2°F (29°C) and 64.2°F (17.9°C).

Temperature

In Mellow Valley, Alabama, the average high-temperature in September is essentially the same as in August - a moderately hot 84.2°F (29°C). In September, in Mellow Valley, the average low-temperature is 64.2°F (17.9°C).

Heat index

The average heat index is evaluated at a tropical 92.3°F (33.5°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 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like clothing, 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.

Humidity

In Mellow Valley, Alabama, the average relative humidity is 74%.

Rainfall

In Mellow Valley, it is raining for 14.5 days, with typically 2.6" (66mm) of accumulated precipitation. In Mellow Valley, Alabama, during the entire year, the rain falls for 184.4 days and collects up to 42.17" (1071mm) of precipitation.

Snowfall

In Mellow Valley, Alabama, snow does not fall in April through November.

Daylight

The average length of the day in Mellow Valley is 12.4h.

Sunshine

The average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
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 Mellow Valley?

In Mellow Valley, in September, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 64.2°F (17.9°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), that combines air temperature and relative humidity, is calculated to 92.3°F (33.5°C).

What is the average humidity in September in Mellow Valley?

The average relative humidity in September is 74%.

How many days does it rain in September in Mellow Valley?

In Mellow Valley, Alabama, in September, it is raining for 14.5 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow in Mellow Valley?

In Mellow Valley snow does not fall in April through November.

What is the average length of the day in September in Mellow Valley?

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

How long on average sun shines in September in Mellow Valley?

The average sunshine in September in Mellow Valley, Alabama, is 8.6h.

How high is the UV index in September in Mellow Valley?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in September
Mellow Valley, AL

Average temperature in September - Mellow Valley, AL
  • Average high temperature in September: 84.2°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in September: 64.2°F

Months with the highest average low temperature are July and August (69.4°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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Average pressure in September
Mellow Valley, AL

Average pressure in September - Mellow Valley, AL
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

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Average wind speed in September
Mellow Valley, AL

Average wind speed in September - Mellow Valley, AL
  • Average wind speed in September: 4.8mph

The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

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Average humidity in September
Mellow Valley, AL

Average humidity in September - Mellow Valley, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Mellow Valley, AL

Average rainfall in September - Mellow Valley, AL
  • Average rainfall in September: 2.6"

The wettest month (with the highest rainfall) is August (4.37").
The driest month (with the least rainfall) is October (2.09").

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Average rainfall days in September
Mellow Valley, AL

Average rainfall days in September - Mellow Valley, AL
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is July (24 days).
The month with the least rainy days is November (8.3 days).

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Average snowfall in September
Mellow Valley, AL

Average snowfall in September - Mellow Valley, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.67").
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
Mellow Valley, AL

Average snowfall days in September - Mellow Valley, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.4 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
Mellow Valley, AL

Average daylight in September / Average sunshine in September - Mellow Valley, 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: 8.6h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are February and December (Average sunshine: 4.9).

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Average sunshine days in September
Mellow Valley, AL

Average sunshine days in September - Mellow Valley, AL
  • Average sunshine days in September: 13.1 days

Months with the most sunshine days are October and November (19.7 days).
The month with the least sunshine days is July (5.6 days).

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Average UV index in September
Mellow Valley, AL

Average UV index in September - Mellow Valley, AL
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Mellow Valley, AL

Average cloud cover in September - Mellow Valley, AL
  • Average cloud cover in September: 31

Months with the most cloud cover are February and December (Cloud cover 47).
Months with the least cloud cover are June, September and October (Cloud cover 31).

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Average visibility in September
Mellow Valley, AL

Average visibility in September - Mellow Valley, 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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