September weather forecastDillwyn, VA
September
Weather in September
September, the first month of the autumn in Dillwyn, is still a warm month, with an average temperature fluctuating between 80.2°F (26.8°C) and 61°F (16.1°C).Temperature
As September arrives, Dillwyn's weather displays a minor decrease in high-temperatures, transitioning from August's hot 87.4°F (30.8°C) to a warm 80.2°F (26.8°C). September is noted for a mean low-temperature of 61°F (16.1°C).Humidity
In September, the average relative humidity is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.81" (46mm) of precipitation.Snowfall
In Dillwyn, snow does not fall in May through September.Daylight
In Dillwyn, Virginia, the average length of the day in September is 12h and 25min.On the first day of September in Dillwyn, sunrise is at 6:44 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:58 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index in Dillwyn is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dillwyn, VA
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Dillwyn, VA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Dillwyn, VA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Dillwyn, VA
- Average humidity in September: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Dillwyn, VA
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are February and May (2.95").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Dillwyn, VA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in September
Dillwyn, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Dillwyn, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dillwyn, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Dillwyn, VA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in September
Dillwyn, 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
Dillwyn, VA
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Dillwyn, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, May, September and December (5mi).
