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
Effingham experiences an average high-temperature of a warm 83.7°F (28.7°C) with the onset of September, subtly varied from August's 88.3°F (31.3°C). Throughout September nights, Effingham experiences a consistent temperature average of 66.2°F (19°C).Heat index
September's mean heat index is evaluated at a tropical 91.4°F (33°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Note that heat index values are valued for light wind and location in the shade. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In Effingham, South Carolina, the average relative humidity in September is 77%.Rainfall
In Effingham, South Carolina, in September, it is raining for 14.5 days, with typically 2.95" (75mm) of accumulated precipitation. In Effingham, during the entire year, the rain falls for 168.6 days and collects up to 33.82" (859mm) of precipitation.Snowfall
In Effingham, snow does not fall in April through October.Daylight
In September, the average length of the day in Effingham is 12h and 22min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:04 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
How hot is September in Effingham?
What is the average humidity in September in Effingham?
How many days does it rain in September in Effingham?
When it does not snow in Effingham?
What is the average length of the day in September in Effingham?
When are sunrise and sunset in September in Effingham?
How long on average sun shines in September in Effingham?
What is the UV index intensity in September in Effingham?
Average temperature in September
Effingham, SC
- Average high temperature in September: 83.7°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (37°F).
Average pressure in September
Effingham, SC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Effingham, SC
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Effingham, SC
- Average humidity in September: 77%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).
Average rainfall in September
Effingham, SC
- Average rainfall in September: 2.95"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.65").
Average rainfall days in September
Effingham, SC
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Effingham, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Effingham, SC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and 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
Effingham, 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 1min
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
Effingham, SC
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in September
Effingham, 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
Effingham, SC
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in September
Effingham, 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).
Effingham, South Carolina, USA
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