September weather forecastDorsey Hall, MD
September
Weather in September
September, the first month of the autumn in Dorsey Hall, is still a warm month, with an average temperature fluctuating between 60.6°F (15.9°C) and 77°F (25°C).Temperature
With the arrival of September, Dorsey Hall experiences a modest decline in average high-temperatures, transitioning from 83.8°F (28.8°C) in August to a still warm 77°F (25°C). During September nights, Dorsey Hall witnesses a consistent average temperature of 60.6°F (15.9°C).Humidity
In Dorsey Hall, the average relative humidity in September is 75%.Rainfall
In Dorsey Hall, in September, during 13.3 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Dorsey Hall, during the entire year, the rain falls for 159.3 days and collects up to 30.31" (770mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Dorsey Hall, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:51 pm EDT.
Sunshine
In Dorsey Hall, the average sunshine in September is 9.1h.UV index
In Dorsey Hall, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dorsey Hall, MD
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Dorsey Hall, MD
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Dorsey Hall, MD
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Dorsey Hall, MD
- Average humidity in September: 75%
The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in September
Dorsey Hall, MD
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Dorsey Hall, MD
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Dorsey Hall, MD
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Dorsey Hall, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 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
Dorsey Hall, MD
- Average daylight in September: 12h and 24min
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 30min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in September
Dorsey Hall, MD
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Dorsey Hall, 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
Dorsey Hall, MD
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Dorsey Hall, MD
- 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).
