Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Rains transitions into September recording an average high-temperature of a moderately hot 83.3°F (28.5°C), closely aligning with the preceding month's temperature. During the nights in September, the temperature averages to a comfortable 66.2°F (19°C).Heat index
In September, the heat index is appraised at a hot 91.4°F (33°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
May, August and September, with an average relative humidity of 78%, are the most humid months.Rainfall
In Rains, during September, the rain falls for 15.5 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Rains, South Carolina, during the entire year, the rain falls for 171 days and collects up to 34.29" (871mm) of precipitation.Snowfall
In Rains, snow does not fall in April through November.Daylight
In Rains, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:51 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:02 pm EDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In Rains, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September in Rains?
How many hours of sunshine does Rains have in September?
What is the UV index reading in September?
Average temperature in September
Rains, SC
- Average high temperature in September: 83.3°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 (52.3°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
Rains, SC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Rains, SC
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Rains, SC
- Average humidity in September: 78%
The months with the highest relative humidity are May, August and September (78%).
The months with the lowest relative humidity are January and November (73%).
Average rainfall in September
Rains, SC
- Average rainfall in September: 3.15"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in September
Rains, SC
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is October (8.7 days).
Average snowfall in September
Rains, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Rains, SC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.7 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
Rains, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Rains, SC
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (8 days).
Average UV index in September
Rains, 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
Rains, SC
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Rains, 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).
Rains, South Carolina, USA
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