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 arrival of September signals a subtle shift in temperature, down from 83.8°F (28.8°C) in August to a still warm 76.3°F (24.6°C). Delaplane reports a consistent average low-temperature of 56.7°F (13.7°C) throughout September nights.Humidity
In Delaplane, the average relative humidity in September is 78%.Rainfall
In Delaplane, during September, the rain falls for 13.6 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Delaplane, Virginia, during the entire year, the rain falls for 166.6 days and collects up to 29.57" (751mm) of precipitation.Snowfall
In Delaplane, snow does not fall in June through September.Daylight
In Delaplane, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:41 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:55 pm EDT.
Sunshine
In Delaplane, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Delaplane have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Delaplane, VA
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Delaplane, VA
- Average pressure in September: 30.06"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
Delaplane, VA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Delaplane, VA
- Average humidity in September: 78%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April, June and July (74%).
Average rainfall in September
Delaplane, VA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Delaplane, VA
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Delaplane, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Delaplane, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Delaplane, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 4min
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 0min).
Average sunshine days in September
Delaplane, VA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (19.1 days).
The months with the least sunshine days are May and July (10.8 days).
Average UV index in September
Delaplane, 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, November and December (UV index 2).
Average cloud cover in September
Delaplane, 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 31).
Average visibility in September
Delaplane, VA
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).
Delaplane, Virginia, USA
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