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
September in Greer welcomes an average high-temperature of a warm 83.3°F (28.5°C), not much different from the preceding month. Greer records a steady low-temperature average of 62.4°F (16.9°C) during September.Heat index
September's mean heat index is estimated at a hot 89.6°F (32°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
The average relative humidity in September in Greer is 72%.Rainfall
The month with the least rainfall in Greer is September, when the rain falls for 12 days and typically collects 1.38" (35mm) of precipitation.Snowfall
April through October 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 7:02 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine in Greer is 8.6h.UV index
In Greer, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
How hot is it in Greer in September?
What is the average humidity in September in Greer?
What is the driest month in Greer?
How many days does it rain in September in Greer?
When it does not snow in Greer?
How many hours of daylight does Greer have in September?
When is the sunrise / sunset in September in Greer?
How long on average sun shines in September in Greer?
What is the UV index reading in September in Greer?
Average temperature in September
Greer, SC
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.5°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in September
Greer, SC
- Average pressure in September: 30.04"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
Greer, SC
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Greer, 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 (68%).
Average rainfall in September
Greer, SC
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in September
Greer, SC
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in September
Greer, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.8").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Greer, 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
Greer, 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 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Greer, SC
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in September
Greer, 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
Greer, SC
- Average cloud cover in September: 31
The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Greer, 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).
Greer, South Carolina, USA
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