September weather forecast and climate
Cottonwood, AL

September, the first month of the autumn, in Cottonwood, is still a tropical month, with average temperature ranging between max 86.9°F (30.5°C) and min 69.8°F (21°C).

Temperature

In Cottonwood, Alabama, the average high-temperature in September is almost the same as in August - a still hot 86.9°F (30.5°C). In September, in Cottonwood, Alabama, the average low-temperature is 69.8°F (21°C).

Heat index

The average heat index is appraised at a sweltering 99.9°F (37.7°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', 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 activity, differences in body mass, height, and shape, pregnancy, and metabolic differences affect individual temperature impact. 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. 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. 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. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in Cottonwood is 75%.

Rainfall

In Cottonwood, it is raining for 14.6 days, with typically 1.73" (44mm) of accumulated precipitation. In Cottonwood, during the entire year, the rain falls for 156.9 days and collects up to 27.52" (699mm) of precipitation.

Snowfall

In Cottonwood snow does not fall in February through December.

Daylight

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

Sunshine

In Cottonwood, Alabama, the average sunshine is 8.8h.

UV index

In Cottonwood, Alabama, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
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.

What is the temperature in September in Cottonwood?

In Cottonwood, in September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 69.8°F (21°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, in September is evaluated at 99.9°F (37.7°C).

What is the average humidity in September in Cottonwood?

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

How much does it rain in Cottonwood in September?

In Cottonwood, in September, it is raining for 14.6 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Cottonwood?

In Cottonwood, Alabama, snow does not fall in February through December.

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

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

How many hours of sunshine does Cottonwood have in September?

In September, the average sunshine in Cottonwood, Alabama, is 8.8h.

What is the UV index reading in September in Cottonwood?

In September, the average daily maximum UV index in Cottonwood, Alabama, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Cottonwood, AL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.2°F).

  • Average low temperature in September: 69.8°F

The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).

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

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June and August (29.98").

Average wind speed in September - Cottonwood, AL
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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

Months with the highest relative humidity are August and December (76%).
Months with the lowest relative humidity are May and October (70%).

Average rainfall in September - Cottonwood, AL
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in September - Cottonwood, AL
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (7.2 days).

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

The month with the highest snowfall is January (0.08").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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

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

Average daylight in September / Average sunshine in September - Cottonwood, 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: 8.8h

The month with the most sunshine is May (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 5.4h).

Average sunshine days in September - Cottonwood, AL
  • Average sunshine days in September: 13.2 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is August (6.9 days).

Average UV index in September - Cottonwood, 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).

Average cloud cover in September - Cottonwood, AL
  • Average cloud cover in September: 30

Months with the most cloud cover are February and December (Cloud cover 42).
Months with the least cloud cover are May and October (Cloud cover 27).

Average visibility in September - Cottonwood, 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).