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 observes an average high-temperature of a moderately hot 83.3°F (28.5°C), marking an insignificant difference from August's 87.6°F (30.9°C). Clarendon experiences a mean low-temperature of 67.1°F (19.5°C) during September.Heat index
Throughout September, the heat index is estimated at a hot 91.4°F (33°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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
May, June, August and September, with an average relative humidity of 79%, are the most humid months in Clarendon.Rainfall
In Clarendon, in September, during 16 rainfall days, 3.9" (99mm) of precipitation is typically accumulated. In Clarendon, during the entire year, the rain falls for 173.5 days and collects up to 36.61" (930mm) of precipitation.Snowfall
In Clarendon, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:09 am and sunset at 7:00 pm EDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Clarendon have 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
Clarendon, NC
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (52.9°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).
Average pressure in September
Clarendon, NC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January, November and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Clarendon, NC
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Clarendon, NC
- Average humidity in September: 79%
The months with the highest relative humidity are May, June, August and September (79%).
The month with the lowest relative humidity is January (73%).
Average rainfall in September
Clarendon, NC
- Average rainfall in September: 3.9"
The wettest month (with the highest rainfall) is August (4.61").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
Clarendon, NC
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is July (21.3 days).
The months with the least rainy days are October and November (9.7 days).
Average snowfall in September
Clarendon, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Clarendon, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Clarendon, NC
- 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: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Clarendon, NC
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (6.8 days).
Average UV index in September
Clarendon, NC
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Clarendon, NC
- Average cloud cover in September: 33
The months with the most cloud cover are February, March and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Clarendon, NC
- 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).
Clarendon, North Carolina, USA
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