September weather forecastHarris Crossroads, VA
September
Weather in September
September, the first month of the autumn in Harris Crossroads, is also a moderately hot month, with an average temperature fluctuating between 63.1°F (17.3°C) and 81.1°F (27.3°C).Temperature
September is characterized by a slight reduction in average high-temperature, easing from a tropical 86.9°F (30.5°C) in August to a moderately hot 81.1°F (27.3°C). During September, the average low-temperature is an enjoyable 63.1°F (17.3°C).Heat index
The heat index in September is calculated to be a hot 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
In Harris Crossroads, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 13 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. Throughout the year, in Harris Crossroads, there are 167.6 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Harris Crossroads is 12h and 24min.On the first day of September in Harris Crossroads, Virginia, sunrise is at 6:42 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:55 pm EDT.
Sunshine
In Harris Crossroads, the average sunshine in September is 9h.UV index
In Harris Crossroads, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harris Crossroads, VA
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (46.2°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average pressure in September
Harris Crossroads, VA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Harris Crossroads, VA
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Harris Crossroads, VA
- Average humidity in September: 77%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, February, April, July and November (74%).
Average rainfall in September
Harris Crossroads, VA
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is August (3.35").
The driest month (with the least rainfall) is October (1.89").
Average rainfall days in September
Harris Crossroads, VA
- Average rainfall days in September: 13 days
The months with the highest number of rainy days are May and July (18.3 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Harris Crossroads, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Harris Crossroads, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Harris Crossroads, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Harris Crossroads, VA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Harris Crossroads, VA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Harris Crossroads, VA
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in September
Harris Crossroads, VA
- 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).
