September weather forecast
Berwyn Heights, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Berwyn Heights, Maryland, with an average temperature fluctuating between 78.1°F (25.6°C) and 62.2°F (16.8°C).

Temperature

September's arrival comes with a mild decrease in the average high-temperature, moving subtly from 85.1°F (29.5°C) in August to a still warm 78.1°F (25.6°C). In the month of September, Berwyn Heights experiences an average low-temperature of 62.2°F (16.8°C).

Humidity

In Berwyn Heights, the average relative humidity in September is 74%.

Rainfall

In Berwyn Heights, in September, it is raining for 12.3 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.

Snowfall

May through November are months without snowfall.

Daylight

In September, the average length of the day 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

In September, the average sunshine in Berwyn Heights, Maryland, is 9.1h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

In Berwyn Heights, 78.1°F (25.6°C) is the average high-temperature and 62.2°F (16.8°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 93.2°F (34°C).

What is the average humidity in September?

In Berwyn Heights, the average relative humidity in September is 74%.

How many days does it rain in September?

In Berwyn Heights, Maryland, during September, the rain falls for 12.3 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow?

In Berwyn Heights, snow does not fall in May through November.

How many hours of daylight does Berwyn Heights have in September?

In Berwyn Heights, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September?

On the first day of September in Berwyn Heights, sunrise is at 6:37 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 long on average sun shines in September?

In Berwyn Heights, the average sunshine duration in September is 9.1h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Berwyn Heights, MD

Average temperature in September - Berwyn Heights, 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).

Average pressure in September
Berwyn Heights, MD

Average pressure in September - Berwyn Heights, 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
Berwyn Heights, MD

Average wind speed in September - Berwyn Heights, 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).

Average humidity in September
Berwyn Heights, MD

Average humidity in September - Berwyn Heights, 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%).

Average rainfall in September
Berwyn Heights, MD

Average rainfall in September - Berwyn Heights, 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").

Average rainfall days in September
Berwyn Heights, MD

Average rainfall days in September - Berwyn Heights, 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).

Average snowfall in September
Berwyn Heights, MD

Average snowfall in September - Berwyn Heights, 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").

Average snowfall days in September
Berwyn Heights, MD

Average snowfall days in September - Berwyn Heights, 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).

Average daylight in September /
Average sunshine in September
Berwyn Heights, MD

Average daylight in September / Average sunshine in September - Berwyn Heights, 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).

Average sunshine days in September
Berwyn Heights, MD

Average sunshine days in September - Berwyn Heights, 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).

Average UV index in September
Berwyn Heights, MD

Average UV index in September - Berwyn Heights, 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).

Average cloud cover in September
Berwyn Heights, MD

Average cloud cover in September - Berwyn Heights, 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).

Average visibility in September
Berwyn Heights, MD

Average visibility in September - Berwyn Heights, 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).

Berwyn Heights, Maryland, USA

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