September weather forecast
Elmsford, NY

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Weather in September

September, the first month of the autumn in Elmsford, is also a moderately hot month, with an average temperature ranging between min 59.5°F (15.3°C) and max 75.2°F (24°C).

Temperature

A modest decline in the average high-temperature is seen during September, decreasing from a moderately hot 82.6°F (28.1°C) in August to a still warm 75.2°F (24°C). Elmsford anticipates an average minimum temperature of 59.5°F (15.3°C) in the month of September.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Elmsford, during September, the rain falls for 11.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Elmsford, during the entire year, the rain falls for 132.4 days and collects up to 15.63" (397mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Elmsford, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:22 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:38 pm EDT.

Sunshine

In Elmsford, the average sunshine in September is 8.8h.

UV index

In Elmsford, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 4 suggests this advice:
Make use of precautions - It is urged to ward off sun damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

What are the temperatures in September?

The average high-temperature and low-temperature during September are 75.2°F (24°C) and 59.5°F (15.3°C) respectively. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 87.8°F (31°C).

What is the average humidity in September?

In Elmsford, the average relative humidity in September is 74%.

How many days does it rain in September?

In Elmsford, in September, it is raining for 11.5 days, with typically 1.02" (26mm) of accumulated precipitation.

When it does not snow?

In Elmsford, snow does not fall in May through September.

Does it snow in September?

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

What is the average length of the day in September?

The average day length in September is 12h and 28min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:22 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:38 pm EDT.

How many hours of sunshine does Elmsford have in September?

The average sunshine duration in September is 8.8h.

How high is the UV index in September?

In Elmsford, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe 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
Elmsford, NY

Average temperature in September - Elmsford, NY
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in September
Elmsford, NY

Average pressure in September - Elmsford, NY
  • Average pressure in September: 30.06"Hg

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

Average wind speed in September
Elmsford, NY

Average wind speed in September - Elmsford, NY
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

Average humidity in September
Elmsford, NY

Average humidity in September - Elmsford, NY
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is August (70%).

Average rainfall in September
Elmsford, NY

Average rainfall in September - Elmsford, NY
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is July (2.01").
The driest month (with the least rainfall) is February (0.83").

Average rainfall days in September
Elmsford, NY

Average rainfall days in September - Elmsford, NY
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in September
Elmsford, NY

Average snowfall in September - Elmsford, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is March (1.65").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Elmsford, NY

Average snowfall days in September - Elmsford, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Elmsford, NY

Average daylight in September / Average sunshine in September - Elmsford, NY
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Elmsford, NY

Average sunshine days in September - Elmsford, NY
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (13.8 days).

Average UV index in September
Elmsford, NY

Average UV index in September - Elmsford, NY
  • Average UV index in September: 4

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

Average cloud cover in September
Elmsford, NY

Average cloud cover in September - Elmsford, NY
  • Average cloud cover in September: 35

The 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).

Average visibility in September
Elmsford, NY

Average visibility in September - Elmsford, NY
  • 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).

Elmsford, New York, USA

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