September weather forecastCarterton, VA
September
Weather in September
The first month of the autumn, September, is still a warm month in Carterton, Virginia, with an average temperature fluctuating between 54.5°F (12.5°C) and 77.2°F (25.1°C).Temperature
With the onset of September, Carterton's average high-temperature slightly adjusts, moderately receding from August's 82.8°F (28.2°C) to a still moderately hot 77.2°F (25.1°C). A sharp reduction from the daytime highs is witnessed during September, with nighttime temperatures averaging a low of 54.5°F (12.5°C).Humidity
In September, the average relative humidity is 78%.Rainfall
The month with the least rainfall in Carterton is September, when the rain falls for 16.6 days and typically collects 2.01" (51mm) of precipitation.Snowfall
In Carterton, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 7:00 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine in Carterton is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Carterton, VA
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in September
Carterton, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Carterton, VA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Carterton, VA
- Average humidity in September: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Carterton, VA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is February (3.86").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Carterton, VA
- Average rainfall days in September: 16.6 days
The months with the highest number of rainy days are May and July (21.1 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in September
Carterton, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Carterton, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Carterton, 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 42min).
- Average sunshine in September: 8h and 18min
The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Carterton, VA
- Average sunshine days in September: 11.5 days
The months with the most sunshine days are October and November (15 days).
The month with the least sunshine days is February (7.7 days).
Average UV index in September
Carterton, VA
- Average UV index in September: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Carterton, VA
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Carterton, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
