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
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a hot 89.6°F (32°C) to a warm 84°F (28.9°C). In Rion, September's nights observe an average temperature dip to a comfortable 65.3°F (18.5°C).Heat index
During September, the heat index is computed to be a tropical 91.4°F (33°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
The average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.85" (47mm) of precipitation.Snowfall
In Rion, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:09 pm EDT.
Sunshine
The average sunshine in September in Rion, South Carolina, is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 6 during September translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
How hot does it get in Rion in September?
What is the average humidity in September in Rion?
What is the driest month in Rion?
How much does it rain in Rion in September?
When it does not snow in Rion?
How many hours of daylight does Rion have in September?
What time are sunrise and sunset in September in Rion?
How many hours of sunshine does Rion have in September?
What is the UV index intensity in September in Rion?
Average temperature in September
Rion, SC
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Rion, SC
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Rion, SC
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are February and April (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Rion, SC
- Average humidity in September: 73%
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are June, July and November (71%).
Average rainfall in September
Rion, SC
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Rion, SC
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (18 days).
The months with the least rainy days are October and November (9 days).
Average snowfall in September
Rion, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Rion, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Rion, 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Rion, SC
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Rion, 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
Rion, SC
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Rion, 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).
Rion, South Carolina, USA
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