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 arrival of September corresponds with a light shift in temperature, down from a hot 89.2°F (31.8°C) in August to a moderately hot 83.3°F (28.5°C). During September, the average low-temperature in Gaffney is a refreshing 63°F (17.2°C).Heat index
For most parts of September, the heat index is estimated at a hot 89.6°F (32°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In Gaffney, the average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.2" (5mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
In Gaffney, the average length of the day in September is 12h and 23min.On the first day of September in Gaffney, sunrise is at 6:59 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:11 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index in Gaffney is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 during September translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
How hot is it in Gaffney in September?
What is the average humidity in September in Gaffney?
What is the driest month in Gaffney?
How many days does it rain in September in Gaffney?
When it does not snow in Gaffney?
How many hours of daylight does Gaffney have in September?
When are sunrise and sunset in September in Gaffney?
How many hours of sunshine does Gaffney have in September?
What is the UV index reading in September in Gaffney?
Average temperature in September
Gaffney, SC
- Average high temperature in September: 83.3°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 (48.7°F).
- Average low temperature in September: 63°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 (32.7°F).
Average pressure in September
Gaffney, 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
Gaffney, SC
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Gaffney, 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
Gaffney, SC
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is December (0.83").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in September
Gaffney, SC
- Average rainfall days in September: 4.5 days
The months with the highest number of rainy days are April and July (7.8 days).
The months with the least rainy days are September and November (4.5 days).
Average snowfall in September
Gaffney, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Gaffney, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 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
Gaffney, 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 48min).
- Average sunshine in September: 8h and 2min
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 18min).
Average sunshine days in September
Gaffney, SC
- Average sunshine days in September: 23.8 days
The month with the most sunshine days is October (24.9 days).
The months with the least sunshine days are June and July (20.8 days).
Average UV index in September
Gaffney, 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
Gaffney, SC
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in September
Gaffney, 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).
Gaffney, South Carolina, USA
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