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 shift from August to September coincides with a small decrease in the average high-temperature, down to a moderately hot 85.1°F (29.5°C) from a tropical 90.5°F (32.5°C). In Jackson, an average temperature of 67.6°F (19.8°C) is noted during September nights.Heat index
September's mean heat index is calculated to be a hot 93.2°F (34°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.Note that heat index values are valued for light wind and location in the shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. 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 primarily vital for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
In September, the average relative humidity in Jackson, South Carolina, is 72%.Rainfall
September is the month with the least rainfall in Jackson, South Carolina. Rain falls for 12.7 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Jackson, South Carolina, snow does not fall in March through November.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September in Jackson, sunrise is at 7:01 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
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 unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
How hot is it in Jackson in September?
What is the average humidity in September in Jackson?
What is the driest month in Jackson?
How much does it rain in Jackson in September?
When it does not snow in Jackson?
What is the average length of the day in September in Jackson?
What time are sunrise and sunset in September in Jackson?
How long on average sun shines in September in Jackson?
What is the UV index reading in September in Jackson?
Average temperature in September
Jackson, SC
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Jackson, 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 (29.98"Hg).
Average wind speed in September
Jackson, SC
- Average wind speed in September: 6.1mph
The windiest months (with the highest average wind speed) are February and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Jackson, SC
- Average humidity in September: 72%
The month with the highest relative humidity is December (75%).
The months with the lowest relative humidity are January, July and November (70%).
Average rainfall in September
Jackson, SC
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Jackson, SC
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (7.6 days).
Average snowfall in September
Jackson, SC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Jackson, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Jackson, SC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Jackson, SC
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in September
Jackson, SC
- Average UV index in September: 6
The months with the highest UV index are 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
Jackson, SC
- Average cloud cover in September: 29
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Jackson, 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).
Jackson, South Carolina, USA
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