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 average high-temperature shows a slight dip in September, from August's hot 89.4°F (31.9°C) to a warm 83.7°F (28.7°C). September is noted for a mean low-temperature of 63.5°F (17.5°C).Heat index
The heat index value during September is evaluated at a hot 89.6°F (32°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
The average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 9.7 days and accumulates 0.79" (20mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:16 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Green Forest, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take precautions - Protection against sun damage is advised. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
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?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Green Forest, SC
- Average high temperature in September: 83.7°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.2°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in September
Green Forest, SC
- Average pressure in September: 30.03"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
Green Forest, SC
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Green Forest, 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 (69%).
Average rainfall in September
Green Forest, SC
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is August (2.28").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in September
Green Forest, SC
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is October (7.2 days).
Average snowfall in September
Green Forest, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Green Forest, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.9 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
Green Forest, 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 6min).
Average sunshine days in September
Green Forest, SC
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in September
Green Forest, SC
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Green Forest, SC
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in September
Green Forest, 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).
Green Forest, South Carolina, USA
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