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 involves a subtle temperature drop, shifting from a tropical 86.5°F (30.3°C) in August to a moderately hot 79.9°F (26.6°C). During the nights in September, Ark observes an average low-temperature of 64.9°F (18.3°C).Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 12 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. In Ark, Virginia, during the entire year, the rain falls for 129.1 days and collects up to 12.83" (326mm) of precipitation.Snowfall
In Ark, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:50 pm EDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. 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 average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September in Ark?
How many hours of sunshine does Ark have in September?
What is the UV index reading in September?
Average temperature in September
Ark, VA
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in September
Ark, VA
- Average pressure in September: 30.04"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
Ark, VA
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Ark, VA
- Average humidity in September: 76%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Ark, VA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is August (1.57").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in September
Ark, VA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in September
Ark, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Ark, VA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ark, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Ark, VA
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in September
Ark, VA
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Ark, VA
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Ark, 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).
Ark, Virginia, USA
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