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
Royal City experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from 82.8°F (28.2°C) in August to a still moderately hot 77.4°F (25.2°C). With a notable difference from peak temperatures, an average of 54.9°F (12.7°C) marks the nights in September.Humidity
In September, the average relative humidity is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 14 days and typically collects 1.65" (42mm) of precipitation.Snowfall
In Royal City, snow does not fall in June through September.Daylight
In Royal City, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:59 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:12 pm EDT.
Sunshine
In Royal City, the average sunshine in September is 8.1h.UV index
In Royal City, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Royal City have in September?
What is the UV index reading in September?
Average temperature in September
Royal City, VA
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Royal City, VA
- Average pressure in September: 30.06"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Royal City, VA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Royal City, VA
- Average humidity in September: 78%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in September
Royal City, VA
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is February (3.7").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Royal City, VA
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in September
Royal City, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Royal City, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Royal City, 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: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Royal City, VA
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Royal City, 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
Royal City, VA
- Average cloud cover in September: 38
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Royal City, 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).
Royal City, Virginia, USA
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