September weather forecast
Forestdale, SC

Share

Weather in September

The first month of the autumn, September, is also a moderately hot month in Forestdale, South Carolina, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 70.9°F (21.6°C).

Temperature

As Forestdale transitions from August to September, the average high-temperatures adjust to a moderately hot 85.1°F (29.5°C), nearly the same as the previous 89.4°F (31.9°C). Forestdale encounters a steady low-temperature average of 70.9°F (21.6°C) throughout the month of September.

Heat index

For September, the heat index is computed to be a sweltering 95°F (35°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Forestdale, the average relative humidity in September is 75%.

Rainfall

In Forestdale, in September, during 16.5 rainfall days, 4.02" (102mm) of precipitation is typically accumulated. Throughout the year, there are 172.6 rainfall days, and 39.13" (994mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:55 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:05 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: In September, an average UV index of 6 transforms into the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Forestdale in September?

The high-temperature, in September, in Forestdale, is 85.1°F (29.5°C), while the low-temperature averages to 70.9°F (21.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 95°F (35°C).

What is the average humidity in September?

In September, the average relative humidity is 75%.

How much does it rain in September?

In Forestdale, in September, during 16.5 rainfall days, 4.02" (102mm) of precipitation is typically accumulated.

When it does not snow in Forestdale?

March through November are months without snowfall.

How many hours of daylight does Forestdale have in September?

In Forestdale, the average day length in September is 12h and 22min.

When are sunrise and sunset in September?

On the first day of September in Forestdale, sunrise is at 6:55 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:05 pm EDT.

How many hours of sunshine does Forestdale have in September?

In Forestdale, the average sunshine duration in September is 8.9h.

What is the UV index reading in September?

In Forestdale, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Forestdale, SC

Average temperature in September - Forestdale, SC
  • Average high temperature in September: 85.1°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 (56.8°F).

  • Average low temperature in September: 70.9°F

The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

Average pressure in September
Forestdale, SC

Average pressure in September - Forestdale, SC
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

Average wind speed in September
Forestdale, SC

Average wind speed in September - Forestdale, SC
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in September
Forestdale, SC

Average humidity in September - Forestdale, SC
  • Average humidity in September: 75%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (72%).

Average rainfall in September
Forestdale, SC

Average rainfall in September - Forestdale, SC
  • Average rainfall in September: 4.02"

The wettest month (with the highest rainfall) is August (6.22").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in September
Forestdale, SC

Average rainfall days in September - Forestdale, SC
  • Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is November (8.2 days).

Average snowfall in September
Forestdale, SC

Average snowfall in September - Forestdale, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Forestdale, SC

Average snowfall days in September - Forestdale, SC
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Forestdale, SC

Average daylight in September / Average sunshine in September - Forestdale, 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 5min

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 36min).

Average sunshine days in September
Forestdale, SC

Average sunshine days in September - Forestdale, SC
  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (5.8 days).

Average UV index in September
Forestdale, SC

Average UV index in September - Forestdale, SC
  • Average UV index in September: 6

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

Average cloud cover in September
Forestdale, SC

Average cloud cover in September - Forestdale, SC
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).

Average visibility in September
Forestdale, SC

Average visibility in September - Forestdale, 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).

Forestdale, South Carolina, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location