September weather forecastHartwood, VA
September
Weather in September
September, the first month of the autumn in Hartwood, is also a moderately hot month, with an average temperature fluctuating between 79.9°F (26.6°C) and 60.8°F (16°C).Temperature
The arrival of September signals a subtle shift in temperature, down from a tropical 86.7°F (30.4°C) in August to a moderately hot 79.9°F (26.6°C). An average low-temperature of 60.8°F (16°C) is noted during the nights in September.Humidity
The average relative humidity in September in Hartwood is 76%.Rainfall
In Hartwood, in September, it is raining for 13.2 days, with typically 1.93" (49mm) of accumulated precipitation. In Hartwood, during the entire year, the rain falls for 153.8 days and collects up to 26.73" (679mm) of precipitation.Snowfall
In Hartwood, snow does not fall in May through October.Daylight
In Hartwood, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:54 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hartwood, VA
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 60.8°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Hartwood, VA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Hartwood, VA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Hartwood, VA
- Average humidity in September: 76%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Hartwood, VA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is January (1.65").
Average rainfall days in September
Hartwood, VA
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in September
Hartwood, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Hartwood, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (4.3 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
Hartwood, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Hartwood, VA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in September
Hartwood, 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, February and December (UV index 2).
Average cloud cover in September
Hartwood, VA
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Hartwood, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, May and September (5mi).
