September weather forecastOlivia, NC
September
Weather in September
The first month of the autumn, September, is still a warm month in Olivia, North Carolina, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 82.4°F (28°C).Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a hot 87.8°F (31°C) in August to a warm 82.4°F (28°C). Olivia witnesses a consistent average low-temperature of 65.1°F (18.4°C) throughout September.Heat index
September's heat index is estimated at a tropical 89.6°F (32°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The months with the highest humidity in Olivia are May, September and December, with an average relative humidity of 76%.Rainfall
In Olivia, in September, it is raining for 13.5 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, in Olivia, there are 165.9 rainfall days, and 33.58" (853mm) of precipitation is accumulated.Snowfall
In Olivia, North Carolina, snow does not fall in April through October.Daylight
In September, the average length of the day in Olivia is 12h and 23min.On the first day of September, sunrise is at 6:49 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:01 pm EDT.
Sunshine
The average sunshine in September in Olivia is 9.1h.UV index
In September, the average daily maximum UV index in Olivia is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Act with care - The need to guard against sun damage is communicated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Olivia, NC
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (50°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Olivia, NC
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Olivia, NC
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Olivia, NC
- Average humidity in September: 76%
The months with the highest relative humidity are May, September and December (76%).
The month with the lowest relative humidity is November (72%).
Average rainfall in September
Olivia, NC
- Average rainfall in September: 3.19"
The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.09").
Average rainfall days in September
Olivia, NC
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in September
Olivia, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Olivia, NC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and 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
Olivia, NC
- Average daylight in September: 12h and 24min
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: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Olivia, NC
- Average sunshine days in September: 14.8 days
The months with the most sunshine days are October and November (19.6 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Olivia, NC
- Average UV index in September: 5
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
Olivia, NC
- Average cloud cover in September: 35
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Olivia, 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).





