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 arrival of September suggests a slight decrease in the average high-temperature, moving from a tropical 88.3°F (31.3°C) in August to a warm 82.9°F (28.3°C). McColl experiences an average low-temperature reading of 66°F (18.9°C) throughout September.Heat index
For most parts of September, the heat index is computed to be a hot 89.6°F (32°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. 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' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
May, August, September and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In McColl, in September, it is raining for 14.1 days, with typically 2.99" (76mm) of accumulated precipitation. Throughout the year, in McColl, there are 157 rainfall days, and 32.36" (822mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in McColl.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:03 pm EDT.
Sunshine
In September, the average sunshine in McColl is 9.3h.UV index
In McColl, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What are the most humid months?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
McColl, SC
- Average high temperature in September: 82.9°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (50.9°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
McColl, SC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
McColl, SC
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
McColl, SC
- Average humidity in September: 76%
The months with the highest relative humidity are May, August, September and December (76%).
The month with the lowest relative humidity is November (72%).
Average rainfall in September
McColl, SC
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is August (3.98").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
McColl, SC
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
McColl, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
McColl, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
McColl, SC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
McColl, SC
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in September
McColl, SC
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
McColl, SC
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in September
McColl, SC
- 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).
McColl, South Carolina, USA
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