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 marks an average high-temperature of a warm 82°F (27.8°C), hardly differing from August's 86.4°F (30.2°C). During the month of September, the nighttime temperature falls to an average of 70.7°F (21.5°C).Heat index
The heat index value during September is computed to be a hot 87.8°F (31°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly relevant to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In Holly Ridge, the average relative humidity in September is 76%.Rainfall
In Holly Ridge, in September, during 13.4 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Holly Ridge, North Carolina, during the entire year, the rain falls for 146.1 days and collects up to 16.02" (407mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:43 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:55 pm EDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
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?
How high is the UV index in September?
Average temperature in September
Holly Ridge, NC
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in September
Holly Ridge, NC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January, November and December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Holly Ridge, NC
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in September
Holly Ridge, NC
- Average humidity in September: 76%
The month with the highest relative humidity is August (77%).
The month with the lowest relative humidity is March (72%).
Average rainfall in September
Holly Ridge, NC
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is August (2.36").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in September
Holly Ridge, NC
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in September
Holly Ridge, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Holly Ridge, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Holly Ridge, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Holly Ridge, NC
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in September
Holly Ridge, NC
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Holly Ridge, NC
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Holly Ridge, 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).
Holly Ridge, North Carolina, USA
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