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
A minor decrease in the average high-temperature is observed during September, shifting from a hot 89.4°F (31.9°C) in August to a warm 84°F (28.9°C). Donalds's nighttime temperature in September drops to an average of 64.2°F (17.9°C).Heat index
The heat index value for September is evaluated at a hot 91.4°F (33°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. 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 extremely significant for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The average relative humidity in September in Donalds is 72%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 1.65" (42mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Donalds is 12h and 23min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:55 pm. On the last day of September, in Donalds, sunrise is at 7:23 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.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 unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Donalds in September?
What is the average humidity in September in Donalds?
What is the driest month in Donalds?
How many days does it rain in September in Donalds?
When it does not snow in Donalds?
How many hours of daylight does Donalds have in September?
What time are sunrise and sunset in September in Donalds?
How long on average sun shines in September in Donalds?
What is the UV index intensity in September in Donalds?
Average temperature in September
Donalds, SC
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (51.1°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).
Average pressure in September
Donalds, SC
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Donalds, SC
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are February and April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Donalds, 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
Donalds, SC
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Donalds, SC
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in September
Donalds, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Donalds, SC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.8 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
Donalds, 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 3min
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 12min).
Average sunshine days in September
Donalds, SC
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Donalds, SC
- Average UV index in September: 6
The 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).
Average cloud cover in September
Donalds, SC
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Donalds, SC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Donalds, South Carolina, USA
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