September weather forecast and climate
Briarcliff Manor, NY

Weather in September

September, the first month of the autumn, in Briarcliff Manor, is also a moderately hot month, with average temperature varying between 74.7°F (23.7°C) and 58.3°F (14.6°C).

Temperature

In Briarcliff Manor, the average high-temperature in September slightly decreases, from 82°F (27.8°C) in August, to a still moderately hot 74.7°F (23.7°C). The average low-temperature, in Briarcliff Manor, is 58.3°F (14.6°C).

Humidity

The average relative humidity in Briarcliff Manor is 75%.

Rainfall

In Briarcliff Manor, during September, the rain falls for 12.5 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, in Briarcliff Manor, there are 144.6 rainfall days, and 25.51" (648mm) of precipitation is accumulated.

Snowfall

In Briarcliff Manor snow does not fall in June through September.

Daylight

The average length of the day in Briarcliff Manor, New York, is 12.5h.

Sunshine

In Briarcliff Manor, New York, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index in Briarcliff Manor is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Briarcliff Manor?

The average relative humidity in September in Briarcliff Manor is 75%.

How many days does it rain in September in Briarcliff Manor?

In Briarcliff Manor, New York, during September, the rain falls for 12.5 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Briarcliff Manor?

In Briarcliff Manor, New York, snow does not fall in June through September.

Does it snow in Briarcliff Manor in September?

In Briarcliff Manor, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Briarcliff Manor have in September?

The average length of the day in September in Briarcliff Manor, New York, is 12.5h.

How many hours of sunshine does Briarcliff Manor have in September?

In September, the average sunshine is 8.8h.

What is the UV index intensity in September in Briarcliff Manor?

The average daily maximum UV index in September in Briarcliff Manor, New York, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Briarcliff Manor, NY

Average temperature in September - Briarcliff Manor, NY
  • Average high temperature in September: 74.7°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in September
Briarcliff Manor, NY

Average pressure in September - Briarcliff Manor, NY
  • Average pressure in September: 30.06"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Briarcliff Manor, NY

Average wind speed in September - Briarcliff Manor, NY
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Briarcliff Manor, NY

Average humidity in September - Briarcliff Manor, NY
  • Average humidity in September: 75%

Months with the highest relative humidity are February and December (78%).
Months with the lowest relative humidity are April, July and August (72%).

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Average rainfall in September
Briarcliff Manor, NY

Average rainfall in September - Briarcliff Manor, NY
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is July (2.87").
The driest month (with the least rainfall) is February (1.5").

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Average rainfall days in September
Briarcliff Manor, NY

Average rainfall days in September - Briarcliff Manor, NY
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6 days).

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Average snowfall in September
Briarcliff Manor, NY

Average snowfall in September - Briarcliff Manor, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is March (3.31").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Briarcliff Manor, NY

Average snowfall days in September - Briarcliff Manor, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Briarcliff Manor, NY

Average daylight in September / Average sunshine in September - Briarcliff Manor, NY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in September
Briarcliff Manor, NY

Average sunshine days in September - Briarcliff Manor, NY
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (20 days).
Months with the least sunshine days are June and July (12.3 days).

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Average UV index in September
Briarcliff Manor, NY

Average UV index in September - Briarcliff Manor, NY
  • Average UV index in September: 4

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

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Average cloud cover in September
Briarcliff Manor, NY

Average cloud cover in September - Briarcliff Manor, NY
  • Average cloud cover in September: 35

Months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in September
Briarcliff Manor, NY

Average visibility in September - Briarcliff Manor, NY
  • 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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