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
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a hot 88.3°F (31.3°C) in August to a warm 82.4°F (28°C). An average low-temperature of 61.9°F (16.6°C) is noted during the month of September.Heat index
In September, the heat index is estimated at a hot 87.8°F (31°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
The average relative humidity in September is 72%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.5 days and typically collects 1.38" (35mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Staunton Heights, 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 7:55 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
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the UV index of 5 transforms into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September in Staunton Heights?
What is the driest month?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Staunton Heights have in September?
What is the UV index reading in September?
Average temperature in September
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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
Staunton Heights, 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).
Staunton Heights, South Carolina, USA
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