Greenwood
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Greenwood, SC

The first month of the autumn, September, is still a warm month in Greenwood, South Carolina, with average temperature varying between 84.4°F (29.1°C) and 64.9°F (18.3°C).

Temperature

In Greenwood, South Carolina, the average high-temperature marginally drops, from a hot 90.1°F (32.3°C) in August, to a moderately hot 84.4°F (29.1°C). In Greenwood, the average low-temperature is 64.9°F (18.3°C).

Heat index

In September, the average heat index is evaluated at a tropical 91.9°F (33.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, metabolic differences), and activity. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 1.57" (40mm) of precipitation.

Snowfall

In Greenwood snow does not fall in April through December.

Daylight

The average length of the day in Greenwood is 12.4h.

Sunshine

The average sunshine in September is 8.5h.

UV index

In Greenwood, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Greenwood?

In Greenwood, South Carolina, in September, the average high-temperature is 84.4°F (29.1°C), and the average low-temperature is 64.9°F (18.3°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 91.9°F (33.3°C).

What is the average humidity in September in Greenwood?

In Greenwood, the average relative humidity in September is 72%.

How many days does it rain in September in Greenwood?

In Greenwood, during September, the rain falls for 11.7 days and regularly aggregates up to 1.57" (40mm) of precipitation.

What is the driest month in Greenwood?

The month with the least rainfall in Greenwood is September when the rain falls for 11.7 days and typically collects 1.57" (40mm) of precipitation.

When it does not snow in Greenwood?

In Greenwood snow does not fall in April through December.

How many hours of daylight does Greenwood have in September?

In September, the average length of the day in Greenwood is 12.4h.

How long on average sun shines in September in Greenwood?

In September, the average sunshine in Greenwood, South Carolina, is 8.5h.

What is the UV index intensity in September in Greenwood?

The average daily maximum UV index in September in Greenwood is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Greenwood, SC
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (51.4°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).

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

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).

Average rainfall in September - Greenwood, SC
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in September - Greenwood, SC
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is October (8.5 days).

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

The month with the highest snowfall is February (0.87").
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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

The month with the highest number of snowfall days is January (0.7 days).
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 - Greenwood, SC
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 5.3h).

Average UV index in September - Greenwood, SC
  • Average UV index in September: 5

Months with the highest UV index are June and August (UV index 7).
The month with the lowest UV index is January (UV index 2).