September weather forecast
Germantown Park, MD

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Weather in September

September, the first month of the autumn in Germantown Park, is still a warm month, with an average temperature ranging between min 59.2°F (15.1°C) and max 77.5°F (25.3°C).

Temperature

Germantown Park's progression into September involves a gentle drop in the average high-temperature, from 84.6°F (29.2°C) in August to a still warm 77.5°F (25.3°C). An average low-temperature of 59.2°F (15.1°C) is anticipated throughout the nights during September.

Humidity

In Germantown Park, the average relative humidity in September is 76%.

Rainfall

In September, the rain falls for 14.2 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Germantown Park, Maryland, there are 159.4 rainfall days, and 30.71" (780mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall.

Daylight

In Germantown Park, the average length of the day in September is 12h and 26min.
On the first day of September in Germantown Park, sunrise is at 6:38 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

Sunshine

In September, the average sunshine in Germantown Park, Maryland, is 9h.

UV index

In Germantown Park, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 5 during September morphs into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the temperature in September in Germantown Park?

September temperatures in Germantown Park vary between a high-temperature of 77.5°F (25.3°C) and a low-temperature of 59.2°F (15.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is evaluated at 93.2°F (34°C).

What is the average humidity in September in Germantown Park?

The average relative humidity in September in Germantown Park, Maryland, is 76%.

How many days does it rain in September in Germantown Park?

In Germantown Park, Maryland, in September, it is raining for 14.2 days, with typically 2.17" (55mm) of accumulated precipitation.

When it does not snow in Germantown Park?

June through October are months without snowfall in Germantown Park, Maryland.

What is the average length of the day in September in Germantown Park?

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

When is the sunrise / sunset in September in Germantown Park?

In September, on the first day of the month, sunrise is at 6:38 am and sunset at 7:39 pm. On the last day of the month, in Germantown Park, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

How many hours of sunshine does Germantown Park have in September?

In Germantown Park, the average sunshine duration in September is 9h.

How high is the UV index in September in Germantown Park?

In September, the average daily maximum UV index in Germantown Park is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
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
Germantown Park, MD

Average temperature in September - Germantown Park, MD
  • Average high temperature in September: 77.5°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 59.2°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in September
Germantown Park, MD

Average pressure in September - Germantown Park, 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).

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Average wind speed in September
Germantown Park, MD

Average wind speed in September - Germantown Park, MD
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in September
Germantown Park, MD

Average humidity in September - Germantown Park, MD
  • Average humidity in September: 76%

The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in September
Germantown Park, MD

Average rainfall in September - Germantown Park, MD
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (3.78").
The driest months (with the least rainfall) are January and February (1.97").

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Average rainfall days in September
Germantown Park, MD

Average rainfall days in September - Germantown Park, MD
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is May (17.5 days).
The months with the least rainy days are January and November (9.5 days).

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Average snowfall in September
Germantown Park, MD

Average snowfall in September - Germantown Park, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Germantown Park, MD

Average snowfall days in September - Germantown Park, MD
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Germantown Park, MD

Average daylight in September / Average sunshine in September - Germantown Park, 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 0min

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

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Average sunshine days in September
Germantown Park, MD

Average sunshine days in September - Germantown Park, MD
  • Average sunshine days in September: 14.1 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in September
Germantown Park, MD

Average UV index in September - Germantown Park, 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).

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Average cloud cover in September
Germantown Park, MD

Average cloud cover in September - Germantown Park, MD
  • Average cloud cover in September: 37

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in September
Germantown Park, MD

Average visibility in September - Germantown Park, MD
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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Germantown Park, Maryland, USA

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