Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The commencement of September records an average high-temperature of a still hot 86.7°F (30.4°C), barely varying from August's 90.1°F (32.3°C). Columbia, during September nights, observes an average temperature of 69.4°F (20.8°C).Heat index
The heat index value for September is appraised at a very hot 98.6°F (37°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. 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 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In Columbia, Alabama, the average relative humidity in September is 74%.Rainfall
In Columbia, in September, during 15.1 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, there are 164 rainfall days, and 31.81" (808mm) of precipitation is accumulated.Snowfall
In Columbia, Alabama, snow does not fall in March through December.Daylight
The average length of the day in September in Columbia is 12h and 21min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:03 pm. On the last day of September, sunrise is at 6:33 am and sunset at 6:26 pm CDT.
Sunshine
In Columbia, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 6 during September translates into the following guidance:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
How hot is September in Columbia?
What is the average humidity in September in Columbia?
How many days does it rain in September in Columbia?
When it does not snow in Columbia?
What is the average length of the day in September in Columbia?
When is the sunrise / sunset in September in Columbia?
How long on average sun shines in September in Columbia?
What is the UV index intensity in September in Columbia?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in September /
Average sunshine in September
Columbia, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 5min
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).
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).
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).
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).
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).
Columbia, Alabama, USA
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