September weather forecast
South Kensington, MD

Weather in September

September, the first month of the autumn, in South Kensington, is still a warm month, with average temperature fluctuating between 78.4°F (25.8°C) and 61.5°F (16.4°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 85.8°F (29.9°C) in August, to a still warm 78.4°F (25.8°C). In South Kensington, Maryland, in September, the average low-temperature is 61.5°F (16.4°C).

Humidity

In September, the average relative humidity is 73%.

Rainfall

In South Kensington, it is raining for 12.5 days, with typically 2.05" (52mm) of accumulated precipitation. In South Kensington, during the entire year, the rain falls for 150.3 days and collects up to 28.66" (728mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine in South Kensington is 8.8h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in South Kensington?

The average relative humidity in September in South Kensington is 73%.

How many days does it rain in September in South Kensington?

In South Kensington, Maryland, in September, it is raining for 12.5 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in South Kensington?

In South Kensington, Maryland, snow does not fall in May through October.

What is the average length of the day in September in South Kensington?

The average length of the day in September is 12.4h.

How long on average sun shines in September in South Kensington?

In South Kensington, Maryland, the average sunshine in September is 8.8h.

What is the UV index intensity in September in South Kensington?

The average daily maximum UV index in September in South Kensington is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in September
South Kensington, MD

Average temperature in September - South Kensington, MD
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in September: 61.5°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27°F).

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Average pressure in September
South Kensington, MD

Average pressure in September - South Kensington, MD
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.95").

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Average wind speed in September
South Kensington, MD

Average wind speed in September - South Kensington, MD
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in September
South Kensington, MD

Average humidity in September - South Kensington, MD
  • Average humidity in September: 73%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in September
South Kensington, MD

Average rainfall in September - South Kensington, MD
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.69").

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Average rainfall days in September
South Kensington, MD

Average rainfall days in September - South Kensington, MD
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
South Kensington, MD

Average snowfall in September - South Kensington, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.6").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
South Kensington, MD

Average snowfall days in September - South Kensington, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
South Kensington, MD

Average daylight in September / Average sunshine in September - South Kensington, MD
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 10.7h).
Months with the least sunshine are January, February and December (Average sunshine: 5).

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Average sunshine days in September
South Kensington, MD

Average sunshine days in September - South Kensington, MD
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is November (20.4 days).
Months with the least sunshine days are May and July (12.3 days).

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Average UV index in September
South Kensington, MD

Average UV index in September - South Kensington, MD
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, November and December (UV index 2).

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Average cloud cover in September
South Kensington, MD

Average cloud cover in September - South Kensington, MD
  • Average cloud cover in September: 37

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
South Kensington, MD

Average visibility in September - South Kensington, MD
  • Average visibility in September: 6mi

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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