September weather forecast
Riverpoint, SC

Weather in September

The first month of the autumn, September, is also a moderately hot month in Riverpoint, South Carolina, with temperature in the range of an average low of 73°F (22.8°C) and an average high of 83.5°F (28.6°C).

Temperature

In Riverpoint, South Carolina, the average high-temperature in September is practically the same as in August - a warm 83.5°F (28.6°C). In September, in Riverpoint, the average low-temperature is 73°F (22.8°C).

Heat index

The average heat index in September is appraised at a hot 91.4°F (33°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, clothing, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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

The average relative humidity in September in Riverpoint is 75%.

Rainfall

In September, the rain falls for 18.4 days. Throughout September, 5" (127mm) of precipitation is accumulated. In Riverpoint, during the entire year, the rain falls for 178.9 days and collects up to 41.93" (1065mm) of precipitation.

Snowfall

In Riverpoint, snow does not fall in February through November.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:54 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:06 pm EDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Riverpoint?

In Riverpoint, in September, the average high-temperature is 83.5°F (28.6°C), and the average low-temperature is 73°F (22.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is appraised at 91.4°F (33°C).

What is the average humidity in September in Riverpoint?

In September, the average relative humidity in Riverpoint is 75%.

How many days does it rain in September in Riverpoint?

In September, in Riverpoint, the rain falls for 18.4 days. Throughout September, 5" (127mm) of precipitation is accumulated.

When it does not snow in Riverpoint?

In Riverpoint, snow does not fall in February through November.

How many hours of daylight does Riverpoint have in September?

The average day length in September in Riverpoint, South Carolina, is 12h and 22min.

When are sunrise and sunset in September in Riverpoint?

On the first day of September, sunrise is at 6:54 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:06 pm EDT.

How many hours of sunshine does Riverpoint have in September?

The average sunshine duration in September in Riverpoint, South Carolina, is 9.1h.

What is the UV index intensity in September in Riverpoint?

In Riverpoint, South Carolina, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
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
Riverpoint, SC

Average temperature in September - Riverpoint, SC
  • Average high temperature in September: 83.5°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in September: 73°F

The month with the highest average low temperature is July (77.4°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).

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Average pressure in September
Riverpoint, SC

Average pressure in September - Riverpoint, 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 (29.98"Hg).

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Average wind speed in September
Riverpoint, SC

Average wind speed in September - Riverpoint, SC
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).

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Average humidity in September
Riverpoint, SC

Average humidity in September - Riverpoint, SC
  • Average humidity in September: 75%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).

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Average rainfall in September
Riverpoint, SC

Average rainfall in September - Riverpoint, SC
  • Average rainfall in September: 5"

The wettest month (with the highest rainfall) is August (7.13").
The driest month (with the least rainfall) is January (1.42").

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Average rainfall days in September
Riverpoint, SC

Average rainfall days in September - Riverpoint, SC
  • Average rainfall days in September: 18.4 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in September
Riverpoint, SC

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

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Riverpoint, SC

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

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Riverpoint, 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 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in September
Riverpoint, SC

Average sunshine days in September - Riverpoint, SC
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (3.8 days).

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Average UV index in September
Riverpoint, SC

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

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in September
Riverpoint, SC

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

The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).

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Average visibility in September
Riverpoint, SC

Average visibility in September - Riverpoint, 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).

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