September weather forecast
North Brentwood, MD

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Weather in September

September, the first month of the autumn in North Brentwood, is also a moderately hot month, with an average temperature fluctuating between 62.2°F (16.8°C) and 78.1°F (25.6°C).

Temperature

With the onset of September, North Brentwood experiences a modest temperature adjustment, with the average high-temperature gently receding from a warm 85.1°F (29.5°C) in August to a still moderately hot 78.1°F (25.6°C). In North Brentwood, an average nighttime temperature of 62.2°F (16.8°C) is expected during September.

Humidity

In North Brentwood, the average relative humidity in September is 74%.

Rainfall

In North Brentwood, in September, it is raining for 12.3 days, with typically 2.09" (53mm) of accumulated precipitation. In North Brentwood, during the entire year, the rain falls for 157.9 days and collects up to 31.14" (791mm) of precipitation.

Snowfall

May through November are months without snowfall in North Brentwood.

Daylight

In North Brentwood, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:37 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

The average sunshine in September is 9.1h.

UV index

In North Brentwood, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 5 during September leads to these advisories:
Take precautions - Protection against sun damage is advised. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the usual temperature for North Brentwood in September?

The average high-temperature and low-temperature in North Brentwood, Maryland, during September are 78.1°F (25.6°C) and 62.2°F (16.8°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 93.2°F (34°C).

What is the average humidity in September in North Brentwood?

In North Brentwood, the average relative humidity in September is 74%.

How much does it rain in North Brentwood in September?

In September, the rain falls for 12.3 days. Throughout September, 2.09" (53mm) of precipitation is accumulated.

When it does not snow in North Brentwood?

In North Brentwood, snow does not fall in May through November.

What is the average length of the day in September in North Brentwood?

The average day length in September in North Brentwood is 12h and 26min.

What time are sunrise and sunset in September in North Brentwood?

In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:37 pm. On the last day of the month, in North Brentwood, sunrise is at 7:03 am and sunset at 6:51 pm EDT.

How many hours of sunshine does North Brentwood have in September?

In September, the average sunshine duration in North Brentwood, Maryland, is 9.1h.

What is the UV index reading in September in North Brentwood?

The average daily maximum UV index in September in North Brentwood, Maryland, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
North Brentwood, MD

Average temperature in September - North Brentwood, MD
  • Average high temperature in September: 78.1°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in September
North Brentwood, MD

Average pressure in September - North Brentwood, 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).

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Average wind speed in September
North Brentwood, MD

Average wind speed in September - North Brentwood, MD
  • Average wind speed in September: 6.1mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
North Brentwood, MD

Average humidity in September - North Brentwood, MD
  • Average humidity in September: 74%

The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).

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Average rainfall in September
North Brentwood, MD

Average rainfall in September - North Brentwood, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").

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Average rainfall days in September
North Brentwood, MD

Average rainfall days in September - North Brentwood, MD
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in September
North Brentwood, MD

Average snowfall in September - North Brentwood, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in September
North Brentwood, MD

Average snowfall days in September - North Brentwood, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
North Brentwood, MD

Average daylight in September / Average sunshine in September - North Brentwood, 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 30min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in September
North Brentwood, MD

Average sunshine days in September - North Brentwood, MD
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in September
North Brentwood, MD

Average UV index in September - North Brentwood, 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 and December (UV index 2).

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Average cloud cover in September
North Brentwood, MD

Average cloud cover in September - North Brentwood, 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 29).

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Average visibility in September
North Brentwood, MD

Average visibility in September - North Brentwood, 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).

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North Brentwood, Maryland, USA

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