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
In September, the average high-temperature marginally decreases from 82.8°F (28.2°C) in August to a still moderately hot 76.5°F (24.7°C). Nightly temperatures drop to an average low of 60.1°F (15.6°C) in September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Betterton, during September, the rain falls for 13.1 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 153.2 rainfall days, and 30.51" (775mm) of precipitation is accumulated.Snowfall
April, June through October are months without snowfall.Daylight
The average length of the day in September in Betterton is 12h and 26min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:47 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 during September translates into the following guidance:
Be vigilant - Suggestions to stave off sun damage are provided. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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 many days does it rain in September?
When it does not snow?
How many hours of daylight does Betterton have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Betterton have in September?
What is the UV index intensity in September?
Average temperature in September
Betterton, MD
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
Betterton, MD
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Betterton, MD
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Betterton, MD
- Average humidity in September: 78%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are March, April and November (74%).
Average rainfall in September
Betterton, MD
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Betterton, MD
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
Betterton, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
Betterton, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Betterton, MD
- 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 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Betterton, MD
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in September
Betterton, MD
- Average UV index in September: 5
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
Betterton, MD
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Betterton, MD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Betterton, Maryland, USA
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