September weather forecast
The Birches, MD

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Weather in September

The first month of the autumn, September, is still a warm month in The Birches, Maryland, with temperature in the range of an average high of 77°F (25°C) and an average low of 60.6°F (15.9°C).

Temperature

September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 83.8°F (28.8°C) in August to a still warm 77°F (25°C). The Birches's nights in September cool down to an average low-temperature of 60.6°F (15.9°C).

Humidity

The average relative humidity in September is 75%.

Rainfall

In The Birches, during September, the rain falls for 13.3 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 159.3 rainfall days, and 30.31" (770mm) of precipitation is accumulated.

Snowfall

In The Birches, snow does not fall in April through October.

Daylight

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

The average sunshine in September is 9.1h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 5 in September translates into this advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Around midday, solar radiation is most harmful; hence, exposure should be limited. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The Birches in September has an average high-temperature of 77°F (25°C) and an average low-temperature of 60.6°F (15.9°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 91.4°F (33°C).

What is the average humidity in September?

In The Birches, the average relative humidity in September is 75%.

How much does it rain in The Birches in September?

In The Birches, during September, the rain falls for 13.3 days and regularly aggregates up to 2.17" (55mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

In The Birches, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:51 pm EDT.

How many hours of sunshine does The Birches have in September?

The average sunshine duration in September in The Birches is 9.1h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to 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
The Birches, MD

Average temperature in September - The Birches, 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
The Birches, MD

Average pressure in September - The Birches, 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
The Birches, MD

Average wind speed in September - The Birches, 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
The Birches, MD

Average humidity in September - The Birches, 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
The Birches, MD

Average rainfall in September - The Birches, 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
The Birches, MD

Average rainfall days in September - The Birches, 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
The Birches, MD

Average snowfall in September - The Birches, 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
The Birches, MD

Average snowfall days in September - The Birches, 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
The Birches, MD

Average daylight in September / Average sunshine in September - The Birches, 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 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

Average sunshine days in September
The Birches, MD

Average sunshine days in September - The Birches, 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
The Birches, MD

Average UV index in September - The Birches, 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
The Birches, MD

Average cloud cover in September - The Birches, 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
The Birches, MD

Average visibility in September - The Birches, 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).

The Birches, Maryland, USA

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