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
A minimal variation is noted in Bristol's average high-temperature at the onset of September, reaching a still warm 77.9°F (25.5°C) from August's 82.8°F (28.2°C). Significant dips from daytime highs mark the September nights, with a consistent average temperature of 54.7°F (12.6°C).Humidity
In September, the average relative humidity is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 0.87" (22mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Bristol, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 7:00 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Bristol in September?
What is the average humidity in September in Bristol?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Bristol have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Bristol, VA
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in September: 54.7°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 (26.4°F).
Average pressure in September
Bristol, 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
Bristol, 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
Bristol, VA
- Average humidity in September: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Bristol, VA
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is February (2.17").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in September
Bristol, VA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Bristol, VA
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Bristol, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bristol, VA
- Average daylight in September: 12h and 2min
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: 8h and 4min
The months with the most sunshine are June and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Bristol, VA
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Bristol, VA
- Average UV index in September: 4
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
Bristol, VA
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Bristol, VA
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Bristol, Virginia, USA
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