September weather forecast
Palmerville, SC

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Weather in September

September, the first month of the autumn in Palmerville, is still a warm month, with temperature in the range of an average low of 69.8°F (21°C) and an average high of 84.2°F (29°C).

Temperature

The advent of September sees the average high-temperature at a warm 84.2°F (29°C), subtly shifted from August's 88.7°F (31.5°C). Throughout September, Palmerville's nights cool down to an average of 69.8°F (21°C).

Heat index

For most parts of September, the heat index is evaluated at a hot 93.2°F (34°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Palmerville, during September, the rain falls for 17.5 days and regularly aggregates up to 4.13" (105mm) of precipitation. Throughout the year, in Palmerville, there are 179.5 rainfall days, and 40.79" (1036mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:53 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:04 pm EDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In Palmerville, South Carolina, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

September temperatures vary between a high-temperature of 84.2°F (29°C) and a low-temperature of 69.8°F (21°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is evaluated at 93.2°F (34°C).

What is the average humidity in September?

In Palmerville, the average relative humidity in September is 77%.

How much does it rain in September?

In September, the rain falls for 17.5 days. Throughout September, 4.13" (105mm) of precipitation is accumulated.

When it does not snow?

In Palmerville, snow does not fall in March through November.

What is the average length of the day in September?

In Palmerville, South Carolina, the average day length in September is 12h and 22min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:53 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:04 pm EDT.

How many hours of sunshine does Palmerville have in September?

In September, the average sunshine duration is 9.1h.

How high is the UV index in September?

In Palmerville, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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
Palmerville, SC

Average temperature in September - Palmerville, SC
  • Average high temperature in September: 84.2°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (55.8°F).

  • Average low temperature in September: 69.8°F

The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

Average pressure in September
Palmerville, SC

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in September
Palmerville, SC

Average wind speed in September - Palmerville, SC
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in September
Palmerville, SC

Average humidity in September - Palmerville, SC
  • Average humidity in September: 77%

The months with the highest relative humidity are August and December (78%).
The months with the lowest relative humidity are January and March (74%).

Average rainfall in September
Palmerville, SC

Average rainfall in September - Palmerville, SC
  • Average rainfall in September: 4.13"

The wettest month (with the highest rainfall) is August (6.46").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in September
Palmerville, SC

Average rainfall days in September - Palmerville, SC
  • Average rainfall days in September: 17.5 days

The months with the highest number of rainy days are July and August (23.2 days).
The month with the least rainy days is November (8.9 days).

Average snowfall in September
Palmerville, SC

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

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Palmerville, SC

Average snowfall days in September - Palmerville, 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
Palmerville, SC

Average daylight in September / Average sunshine in September - Palmerville, 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: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in September
Palmerville, SC

Average sunshine days in September - Palmerville, SC
  • Average sunshine days in September: 10 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (5.5 days).

Average UV index in September
Palmerville, SC

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

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Palmerville, SC

Average cloud cover in September - Palmerville, SC
  • Average cloud cover in September: 29

The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in September
Palmerville, SC

Average visibility in September - Palmerville, 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).

Palmerville, South Carolina, USA

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