September weather forecast
Crosswell, SC

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Weather in September

The first month of the autumn, September, is still a warm month in Crosswell, South Carolina, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 82.4°F (28°C).

Temperature

With the onset of September, Crosswell's average high-temperature slightly adjusts, moderately receding from August's tropical 88.3°F (31.3°C) to a warm 82.4°F (28°C). An average temperature of 61.9°F (16.6°C) is recorded during the nights in September.

Heat index

The heat index for September is appraised at a hot 87.8°F (31°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

The average relative humidity in September is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.38" (35mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:03 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:14 pm EDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Crosswell, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 5 during September translates into the following guidance:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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 Crosswell, is 82.4°F (28°C) and the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in September is appraised at 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September in Crosswell is 72%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.38" (35mm) of precipitation.

How many days does it rain in September?

In Crosswell, in September, during 11.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

When it does not snow in Crosswell?

In Crosswell, snow does not fall in April through October.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:03 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:14 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.6h.

How high is the UV index in September?

In Crosswell, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium 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
Crosswell, SC

Average temperature in September - Crosswell, SC
  • Average high temperature in September: 82.4°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (49.3°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

Average pressure in September
Crosswell, SC

Average pressure in September - Crosswell, SC
  • Average pressure in September: 30.04"Hg

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in September
Crosswell, SC

Average wind speed in September - Crosswell, SC
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in September
Crosswell, SC

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

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

Average rainfall in September
Crosswell, SC

Average rainfall in September - Crosswell, SC
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.38").

Average rainfall days in September
Crosswell, SC

Average rainfall days in September - Crosswell, SC
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is October (8.5 days).

Average snowfall in September
Crosswell, SC

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

The month with the highest snowfall is December (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Crosswell, SC

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

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Crosswell, SC
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
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: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in September
Crosswell, SC

Average sunshine days in September - Crosswell, SC
  • Average sunshine days in September: 17 days

The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is August (13.2 days).

Average UV index in September
Crosswell, SC

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

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Crosswell, SC

Average cloud cover in September - Crosswell, SC
  • Average cloud cover in September: 30

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

Average visibility in September
Crosswell, SC

Average visibility in September - Crosswell, 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).

Crosswell, South Carolina, USA

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