September weather forecast
Peak, SC

Share

Weather in September

The first month of the autumn, September, is also a moderately hot month in Peak, South Carolina, with an average temperature varying between 84.7°F (29.3°C) and 66.6°F (19.2°C).

Temperature

September's average high-temperature stands at a moderately hot 84.7°F (29.3°C), showing little deviation from August's 90°F (32.2°C). In September, Peak experiences an average nighttime temperature of 66.6°F (19.2°C).

Heat index

The heat index value for September is estimated at a hot 93.2°F (34°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

The average relative humidity in September is 72%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.54" (39mm) of precipitation.

Snowfall

In Peak, snow does not fall in April through November.

Daylight

In Peak, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:59 am and sunset at 7:50 pm. On the last day of September, in Peak, sunrise is at 7:19 am and sunset at 7:10 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 reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 6 in September transforms into this advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

An average high-temperature, in September, in Peak, is 84.7°F (29.3°C) and the average low-temperature is 66.6°F (19.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 93.2°F (34°C).

What is the average humidity in September in Peak?

In September, the average relative humidity is 72%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12 days and accumulates 1.54" (39mm) of precipitation.

How many days does it rain in September?

In Peak, in September, during 12 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When it does not snow?

April through November are months without snowfall.

How many hours of daylight does Peak have in September?

The average day length in September is 12h and 23min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:59 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm EDT.

How many hours of sunshine does Peak have in September?

In Peak, the average sunshine duration in September is 8.6h.

What is the UV index intensity in September?

The average daily maximum UV index in September in Peak is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
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
Peak, SC

Average temperature in September - Peak, SC
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in September: 66.6°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

Average pressure in September
Peak, SC

Average pressure in September - Peak, SC
  • Average pressure in September: 30.02"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 (29.97"Hg).

Average wind speed in September
Peak, SC

Average wind speed in September - Peak, SC
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Peak, SC

Average humidity in September - Peak, SC
  • Average humidity in September: 72%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (70%).

Average rainfall in September
Peak, SC

Average rainfall in September - Peak, SC
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in September
Peak, SC

Average rainfall days in September - Peak, SC
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is October (7.8 days).

Average snowfall in September
Peak, SC

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

The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Peak, SC

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

The month with the highest number of snowfall days is January (0.5 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
Peak, SC

Average daylight in September / Average sunshine in September - Peak, 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: 8h and 4min

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
Peak, SC

Average sunshine days in September - Peak, SC
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in September
Peak, SC

Average UV index in September - Peak, 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
Peak, SC

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

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 28).

Average visibility in September
Peak, SC

Average visibility in September - Peak, 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).

Peak, South Carolina, USA

Weather forecast for your location

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