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
The start of September marks an average high-temperature of a still warm 76.1°F (24.5°C), hardly distinguishable from the conditions in August. Onley notes an average temperature descent to a pleasant 70.3°F (21.3°C) in September, a small shift from its daytime peak.Humidity
The average relative humidity in September in Onley is 76%.Rainfall
In Onley, in September, it is raining for 14.6 days, with typically 3.07" (78mm) of accumulated precipitation. In Onley, during the entire year, the rain falls for 175.7 days and collects up to 37.72" (958mm) of precipitation.Snowfall
In Onley, snow does not fall in April through November.Daylight
The average length of the day in September in Onley, Virginia, is 12h and 25min.On the first day of September in Onley, sunrise is at 6:33 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:47 pm EDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
In Onley, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the average September temperature in Onley?
What is the average humidity in September in Onley?
How many days does it rain in September in Onley?
When it does not snow in Onley?
How many hours of daylight does Onley have in September?
When are sunrise and sunset in September in Onley?
How many hours of sunshine does Onley have in September?
How high is the UV index in September in Onley?
Average temperature in September
Onley, VA
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in September: 70.3°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in September
Onley, VA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Onley, VA
- Average wind speed in September: 10.9mph
The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is August (9.2mph).
Average humidity in September
Onley, VA
- Average humidity in September: 76%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Onley, VA
- Average rainfall in September: 3.07"
The wettest month (with the highest rainfall) is August (4.29").
The driest months (with the least rainfall) are January and November (2.44").
Average rainfall days in September
Onley, VA
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (10.9 days).
Average snowfall in September
Onley, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Onley, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Onley, VA
- Average daylight in September: 12h and 2min
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: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in September
Onley, VA
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Onley, VA
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Onley, VA
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June, July and August (Cloud cover 26).
Average visibility in September
Onley, 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).
Onley, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location
