September weather forecastHarrisburg, NC
September
Weather in September
September, the first month of the autumn in Harrisburg, is still a warm month, with temperature in the range of an average low of 63°F (17.2°C) and an average high of 82°F (27.8°C).Temperature
Harrisburg experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a tropical 88.2°F (31.2°C) in August to a warm 82°F (27.8°C). In September, Harrisburg reports a consistent average low-temperature of 63°F (17.2°C) during the nights.Heat index
During September, the heat index is computed to be a tropical 87.8°F (31°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.The standards for the heat index are set for locations in shade and under light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In September, the average relative humidity is 74%.Rainfall
In Harrisburg, in September, during 13.4 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Harrisburg, during the entire year, the rain falls for 162.7 days and collects up to 32.13" (816mm) of precipitation.Snowfall
In Harrisburg, snow does not fall in April through November.Daylight
The average length of the day in September in Harrisburg is 12h and 23min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:07 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
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 average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harrisburg, NC
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (48.2°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in September
Harrisburg, NC
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Harrisburg, NC
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Harrisburg, NC
- Average humidity in September: 74%
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are June and July (70%).
Average rainfall in September
Harrisburg, NC
- Average rainfall in September: 2.2"
The wettest months (with the highest rainfall) are April and August (3.31").
The driest month (with the least rainfall) is October (2.05").
Average rainfall days in September
Harrisburg, NC
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in September
Harrisburg, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.85").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Harrisburg, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Harrisburg, 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: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Harrisburg, NC
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Harrisburg, NC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Harrisburg, NC
- Average cloud cover in September: 34
The months with the most cloud cover are February and December (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Harrisburg, 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).
