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 mild drop in Mouth of Wilson's average high-temperature is observed in September, transitioning from a warm 79.2°F (26.2°C) in August to a still moderately hot 73.8°F (23.2°C). In Mouth of Wilson, an average temperature of 53.6°F (12°C) is noted during September nights.Humidity
May and September, with an average relative humidity of 80%, are the most humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 10 days and typically collects 1.26" (32mm) of precipitation.Snowfall
In Mouth of Wilson, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:09 pm EDT.
Sunshine
In Mouth of Wilson, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the most humid month?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow in Mouth of Wilson?
Does it snow in September?
How many hours of daylight does Mouth of Wilson have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Mouth of Wilson have in September?
What is the UV index reading in September in Mouth of Wilson?
Average temperature in September
Mouth of Wilson, VA
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in September
Mouth of Wilson, 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
Mouth of Wilson, VA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Mouth of Wilson, VA
- Average humidity in September: 80%
The months with the highest relative humidity are May and September (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Mouth of Wilson, VA
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in September
Mouth of Wilson, VA
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (6.1 days).
Average snowfall in September
Mouth of Wilson, VA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mouth of Wilson, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mouth of Wilson, 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 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 5h and 12min).
Average sunshine days in September
Mouth of Wilson, VA
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (14.2 days).
Average UV index in September
Mouth of Wilson, VA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mouth of Wilson, VA
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and July (Cloud cover 36).
Average visibility in September
Mouth of Wilson, VA
- Average visibility in September: 4mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is September (4mi).
Mouth of Wilson, Virginia, USA
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