September weather forecast
Knights Hill, SC

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Weather in September

September, the first month of the autumn in Knights Hill, is still a warm month, with an average temperature varying between 66.2°F (19°C) and 83.3°F (28.5°C).

Temperature

September commences with an average high-temperature of a warm 83.3°F (28.5°C), showing little deviation from August's 88.5°F (31.4°C). The average temperature in Knights Hill, South Carolina, drops to a refreshing 66.2°F (19°C) during the night in the month of September.

Heat index

September's average heat index is computed to be a hot 89.6°F (32°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. 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 'feels like', gives a temperature feeling by integrating air temperature and humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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 Knights Hill, the average relative humidity in September is 74%.

Rainfall

The month with the least rainfall in Knights Hill is September, when the rain falls for 9.5 days and typically collects 0.59" (15mm) of precipitation.

Snowfall

In Knights Hill, snow does not fall in March through December.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September in Knights Hill, sunrise is at 6:56 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:07 pm EDT.

Sunshine

The average sunshine in September is 9h.

UV index

In Knights Hill, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. 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. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

In September, in Knights Hill, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 66.2°F (19°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is computed to be 89.6°F (32°C).

What is the average humidity in September in Knights Hill?

In Knights Hill, the average relative humidity in September is 74%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 0.59" (15mm) of precipitation.

How much does it rain in September?

In Knights Hill, South Carolina, in September, it is raining for 9.5 days, with typically 0.59" (15mm) of accumulated precipitation.

When it does not snow?

In Knights Hill, snow does not fall in March through December.

What is the average length of the day in September?

In September, the average day length is 12h and 23min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:56 am and sunset at 7:48 pm. On the last day of the month, in Knights Hill, sunrise is at 7:16 am and sunset at 7:07 pm EDT.

How long on average sun shines in September?

In Knights Hill, the average sunshine duration in September is 9h.

What is the UV index reading in September in Knights Hill?

In Knights Hill, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's 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
Knights Hill, SC

Average temperature in September - Knights Hill, SC
  • Average high temperature in September: 83.3°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 (52.2°F).

  • Average low temperature in September: 66.2°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

Average pressure in September
Knights Hill, SC

Average pressure in September - Knights Hill, 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 (29.97"Hg).

Average wind speed in September
Knights Hill, SC

Average wind speed in September - Knights Hill, SC
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are February and April (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Knights Hill, SC

Average humidity in September - Knights Hill, SC
  • Average humidity in September: 74%

The month with the highest relative humidity is May (75%).
The months with the lowest relative humidity are January, March and November (70%).

Average rainfall in September
Knights Hill, SC

Average rainfall in September - Knights Hill, SC
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.59").

Average rainfall days in September
Knights Hill, SC

Average rainfall days in September - Knights Hill, SC
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is November (5.8 days).

Average snowfall in September
Knights Hill, SC

Average snowfall in September - Knights Hill, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Knights Hill, SC

Average snowfall days in September - Knights Hill, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).

Average daylight in September /
Average sunshine in September
Knights Hill, SC

Average daylight in September / Average sunshine in September - Knights Hill, 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 0min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in September
Knights Hill, SC

Average sunshine days in September - Knights Hill, SC
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is October (23.9 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in September
Knights Hill, SC

Average UV index in September - Knights Hill, 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
Knights Hill, SC

Average cloud cover in September - Knights Hill, SC
  • Average cloud cover in September: 31

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 28).

Average visibility in September
Knights Hill, SC

Average visibility in September - Knights Hill, 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).

Knights Hill, South Carolina, USA

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