September weather forecast
Germantown Park, MD

Share

Weather in September

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

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 84.6°F (29.2°C) in August to a still moderately hot 77.5°F (25.3°C). The nighttime temperature, during September, averages of 59.2°F (15.1°C).

Humidity

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

Rainfall

In Germantown Park, in September, during 14.2 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Germantown Park, during the entire year, the rain falls for 159.4 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, 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 is 9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 5 suggests this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

What is the usual temperature for Germantown Park in September?

The average high-temperature, in September, in Germantown Park, is 77.5°F (25.3°C), while the average low-temperature is 59.2°F (15.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 93.2°F (34°C).

What is the average humidity in September?

The average relative humidity in September is 76%.

How many days does it rain in September?

In Germantown Park, 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, snow does not fall in June through October.

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

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

What time are sunrise and sunset in September?

On the first day of September, 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.

How long on average sun shines in September?

In September, the average sunshine duration is 9h.

What is the UV index reading in September?

In Germantown Park, 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 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Germantown Park, Maryland, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location