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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 82.9°F (28.3°C) to a still moderately hot 75.6°F (24.2°C). During September, the nighttime temperature averages of 54.5°F (12.5°C).Humidity
The average relative humidity in September is 78%.Rainfall
In Stanley, in September, during 13 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, there are 158.9 rainfall days, and 26.1" (663mm) of precipitation is accumulated.Snowfall
In Stanley, snow does not fall in May through October.Daylight
In Stanley, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:56 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Stanley, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Make use of precautions - It is urged to ward off sun damage. Around midday, solar radiation is most harmful; hence, exposure should be limited. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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 much does it rain in September?
When it does not snow?
How many hours of daylight does Stanley have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Stanley have in September?
How high is the UV index in September?
Average temperature in September
Stanley, MD
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Stanley, MD
- 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
Stanley, MD
- Average wind speed in September: 4.6mph
The windiest months (with the highest average wind speed) are January and February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Stanley, MD
- Average humidity in September: 78%
The months with the highest relative humidity are February, October and December (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in September
Stanley, MD
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in September
Stanley, MD
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in September
Stanley, MD
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Stanley, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Stanley, 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 January (Average sunshine: 4h and 48min).
Average sunshine days in September
Stanley, MD
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Stanley, MD
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Stanley, MD
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Stanley, MD
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, July and November (6mi).
The months with the lowest visibility are January, May, August, September, October and December (5mi).
Stanley, Maryland, USA
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