September weather forecast
Tanglewood, MD

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Weather in September

September, the first month of the autumn in Tanglewood, is still a warm month, with an average temperature varying between 77°F (25°C) and 64.6°F (18.1°C).

Temperature

With the onset of September, Tanglewood's average high-temperature slightly adjusts, moderately receding from August's moderately hot 83.3°F (28.5°C) to a still warm 77°F (25°C). The average temperature in Tanglewood during September nights dips to a comfortable 64.6°F (18.1°C).

Humidity

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

Rainfall

In Tanglewood, during September, the rain falls for 10.5 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Tanglewood, during the entire year, the rain falls for 120.4 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

In Tanglewood, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

Sunshine

In Tanglewood, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Guard yourself - Avoiding sunburn is suggested. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Tanglewood in September?

September temperatures vary between a high-temperature of 77°F (25°C) and a low-temperature of 64.6°F (18.1°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in August is computed to be 89.6°F (32°C).

What is the average humidity in September?

The average relative humidity in September in Tanglewood is 75%.

How many days does it rain in September?

In Tanglewood, in September, during 10.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, in Tanglewood, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

How many hours of sunshine does Tanglewood have in September?

In September, the average sunshine duration is 9.2h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index reading 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
Tanglewood, MD

Average temperature in September - Tanglewood, MD
  • Average high temperature in September: 77°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 (40.3°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

Average pressure in September
Tanglewood, MD

Average pressure in September - Tanglewood, MD
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Tanglewood, MD

Average wind speed in September - Tanglewood, MD
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in September
Tanglewood, MD

Average humidity in September - Tanglewood, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

Average rainfall in September
Tanglewood, MD

Average rainfall in September - Tanglewood, MD
  • Average rainfall in September: 0.63"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in September
Tanglewood, MD

Average rainfall days in September - Tanglewood, MD
  • Average rainfall days in September: 10.5 days

The months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

Average snowfall in September
Tanglewood, MD

Average snowfall in September - Tanglewood, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Tanglewood, MD

Average snowfall days in September - Tanglewood, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.5 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
Tanglewood, MD

Average daylight in September / Average sunshine in September - Tanglewood, 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 month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Tanglewood, MD

Average sunshine days in September - Tanglewood, MD
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

Average UV index in September
Tanglewood, MD

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

Average cloud cover in September
Tanglewood, MD

Average cloud cover in September - Tanglewood, MD
  • Average cloud cover in September: 33

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in September
Tanglewood, MD

Average visibility in September - Tanglewood, 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).

Tanglewood, Maryland, USA

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