September weather forecastSmithbrook Acres, MD
September
Weather in September
September, the first month of the autumn in Smithbrook Acres, is still a warm month, with an average temperature fluctuating between 56.7°F (13.7°C) and 75.4°F (24.1°C).Temperature
September brings a slight decrease in the average high-temperature, shifting from a warm 82°F (27.8°C) in August to a still moderately hot 75.4°F (24.1°C). In Smithbrook Acres, an average nighttime temperature of 56.7°F (13.7°C) is expected during September.Humidity
The average relative humidity in September is 79%.Rainfall
In Smithbrook Acres, in September, it is raining for 13.9 days, with typically 2.32" (59mm) of accumulated precipitation. In Smithbrook Acres, during the entire year, the rain falls for 164.1 days and collects up to 31.97" (812mm) of precipitation.Snowfall
June through September are months without snowfall in Smithbrook Acres.Daylight
In Smithbrook Acres, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:38 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:53 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Smithbrook Acres, MD
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Smithbrook Acres, 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
Smithbrook Acres, MD
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Smithbrook Acres, MD
- Average humidity in September: 79%
The month with the highest relative humidity is October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in September
Smithbrook Acres, MD
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (2.2").
Average rainfall days in September
Smithbrook Acres, MD
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in September
Smithbrook Acres, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Smithbrook Acres, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Smithbrook Acres, 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 24min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Smithbrook Acres, MD
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in September
Smithbrook Acres, MD
- Average UV index in September: 4
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
Smithbrook Acres, MD
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Smithbrook Acres, MD
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
