September weather forecast
Columbia, AL

Weather in September

September, the first month of the autumn in Columbia, is still a tropical month, with an average temperature ranging between min 69.4°F (20.8°C) and max 86.7°F (30.4°C).

Temperature

In Columbia, the average high-temperature in September is relatively the same as in August - a still hot 86.7°F (30.4°C). The average low-temperature, in September, is 69.4°F (20.8°C).

Heat index

The average heat index in September 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 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', 'felt air temperature', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like metabolic differences, pregnancy, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through 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 September is 74%.

Rainfall

In September, in Columbia, the rain falls for 15.1 days. Throughout September, 2.13" (54mm) of precipitation is accumulated. In Columbia, during the entire year, the rain falls for 164 days and collects up to 31.81" (808mm) of precipitation.

Snowfall

In Columbia, snow does not fall in March through December.

Daylight

In September, the average length of the day is 12h and 21min.
On the first day of September in Columbia, sunrise is at 6:16 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 6:27 pm CDT.

Sunshine

In September, the average sunshine in Columbia is 8.8h.

UV index

In September, the average daily maximum UV index in Columbia is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. 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 Columbia?

In Columbia, Alabama, in September, the average high-temperature is 86.7°F (30.4°C), and the average low-temperature is 69.4°F (20.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is estimated at 98.8°F (37.1°C).

What is the average humidity in September in Columbia?

In September, the average relative humidity in Columbia is 74%.

How much does it rain in Columbia in September?

In September, in Columbia, Alabama, the rain falls for 15.1 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow in Columbia?

In Columbia, snow does not fall in March through December.

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

In Columbia, Alabama, the average day length in September is 12h and 21min.

When is the sunrise / sunset in September in Columbia?

In September, on the first day of the month, sunrise is at 6:16 am and sunset at 7:04 pm. On the last day of the month, in Columbia, sunrise is at 6:33 am and sunset at 6:27 pm CDT.

How many hours of sunshine does Columbia have in September?

The average sunshine duration in September is 8.8h.

How high is the UV index in September in Columbia?

The average daily maximum UV index in September in Columbia, Alabama, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Columbia, AL

Average temperature in September - Columbia, AL
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (57.7°F).

  • Average low temperature in September: 69.4°F

The months with the highest average low temperature are July and August (73.2°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in September
Columbia, AL

Average pressure in September - Columbia, AL
  • Average pressure in September: 29.99"Hg

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

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Average wind speed in September
Columbia, AL

Average wind speed in September - Columbia, AL
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Columbia, AL

Average humidity in September - Columbia, AL
  • Average humidity in September: 74%

The months with the highest relative humidity are August and December (76%).
The months with the lowest relative humidity are May and October (69%).

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Average rainfall in September
Columbia, AL

Average rainfall in September - Columbia, AL
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in September
Columbia, AL

Average rainfall days in September - Columbia, AL
  • Average rainfall days in September: 15.1 days

The month with the highest number of rainy days is August (21.4 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in September
Columbia, AL

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

The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Columbia, AL

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

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

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

Average daylight in September / Average sunshine in September - Columbia, AL
  • Average daylight in September: 12h and 21min

The month with the longest days is June (Average daylight: 14h and 9min).
The month with the shortest days is December (Average daylight: 10h and 9min).

  • Average sunshine in September: 8h and 48min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in September
Columbia, AL

Average sunshine days in September - Columbia, AL
  • Average sunshine days in September: 12.9 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (7 days).

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Average UV index in September
Columbia, AL

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

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Columbia, AL

Average cloud cover in September - Columbia, AL
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).

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Average visibility in September
Columbia, AL

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

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

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