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
In September, Harrisonburg notes an average high-temperature of a still hot 87.4°F (30.8°C), hardly different from the preceding month. Harrisonburg, during the month of September, experiences an average low-temperature of 68.2°F (20.1°C).Heat index
In September, the average heat index is computed to be a torrid 102.2°F (39°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Note that heat index values are valued for light wind and location in the shade. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
The average relative humidity in September is 75%.Rainfall
In Harrisonburg, in September, it is raining for 15.2 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 166.6 rainfall days, and 35.79" (909mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In Harrisonburg, the average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:30 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:53 pm CDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 6 during September translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
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 in Harrisonburg?
When are sunrise and sunset in September?
How many hours of sunshine does Harrisonburg have in September?
How high is the UV index in September?
Average temperature in September
Harrisonburg, LA
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (55.6°F).
- Average low temperature in September: 68.2°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (40.5°F).
Average pressure in September
Harrisonburg, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Harrisonburg, LA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is February (7.7mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in September
Harrisonburg, LA
- Average humidity in September: 75%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Harrisonburg, LA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in September
Harrisonburg, LA
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is August (18.2 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in September
Harrisonburg, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (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
Harrisonburg, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
Harrisonburg, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Harrisonburg, LA
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (10.6 days).
Average UV index in September
Harrisonburg, LA
- 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 and December (UV index 3).
Average cloud cover in September
Harrisonburg, LA
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Harrisonburg, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
Harrisonburg, Louisiana, USA
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