September weather forecast
Montgomery Woods, MD

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Weather in September

September, the first month of the autumn in Montgomery Woods, is still a warm month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 77.2°F (25.1°C).

Temperature

The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 83.8°F (28.8°C) in August to a still moderately hot 77.2°F (25.1°C). Montgomery Woods experiences an average temperature drop to an enjoyable 62.2°F (16.8°C) during September nights.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Montgomery Woods, in September, it is raining for 13.1 days, with typically 2.09" (53mm) of accumulated precipitation. In Montgomery Woods, during the entire year, the rain falls for 156.3 days and collects up to 29.61" (752mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Montgomery Woods, Maryland, the average length of the day in September is 12h and 26min.
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 7:02 am and sunset at 6:50 pm EDT.

Sunshine

In September, the average sunshine is 9.3h.

UV index

In Montgomery Woods, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 5 suggests this advice:
Undertake precautions - Guarding against sun damage is counselled. To protect against the Sun's most potent rays, avoid direct exposure around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

What are the temperatures in September?

In Montgomery Woods, in September, the average high-temperature is 77.2°F (25.1°C), and the average low-temperature is 62.2°F (16.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 91.4°F (33°C).

What is the average humidity in September?

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

How much does it rain in September?

In Montgomery Woods, during September, the rain falls for 13.1 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Montgomery Woods have in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, in Montgomery Woods, Maryland, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9.3h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Montgomery Woods, MD

Average temperature in September - Montgomery Woods, MD
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.8°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 (27.3°F).

Average pressure in September
Montgomery Woods, MD

Average pressure in September - Montgomery Woods, 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
Montgomery Woods, MD

Average wind speed in September - Montgomery Woods, MD
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in September
Montgomery Woods, MD

Average humidity in September - Montgomery Woods, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in September
Montgomery Woods, MD

Average rainfall in September - Montgomery Woods, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

Average rainfall days in September
Montgomery Woods, MD

Average rainfall days in September - Montgomery Woods, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in September
Montgomery Woods, MD

Average snowfall in September - Montgomery Woods, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Montgomery Woods, MD

Average snowfall days in September - Montgomery Woods, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Montgomery Woods, MD

Average daylight in September / Average sunshine in September - Montgomery Woods, 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 2min

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 6min).

Average sunshine days in September
Montgomery Woods, MD

Average sunshine days in September - Montgomery Woods, MD
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in September
Montgomery Woods, MD

Average UV index in September - Montgomery Woods, 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
Montgomery Woods, MD

Average cloud cover in September - Montgomery Woods, MD
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September
Montgomery Woods, MD

Average visibility in September - Montgomery Woods, 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).

Montgomery Woods, Maryland, USA

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