Plandome Heights
New York, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Plandome Heights, NY

September, the first month of the autumn, in Plandome Heights, is still a warm month, with average temperature ranging between max 73.9°F (23.3°C) and min 62.8°F (17.1°C).

Temperature

In September, the average high-temperature slightly decreases, from 81.1°F (27.3°C) in August, to a still moderately hot 73.9°F (23.3°C). In September, in Plandome Heights, the average low-temperature is 62.8°F (17.1°C).

Humidity

In Plandome Heights, New York, the average relative humidity in September is 73%.

Rainfall

In Plandome Heights, during 13.9 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 168.7 rainfall days, and 36.69" (932mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Plandome Heights.

Ocean temperature

In Plandome Heights, the average seawater temperature in September is 70.2°F (21.2°C).
Note: For most, swimming in 70.2°F (21.2°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day in Plandome Heights is 12.4h.

Sunshine

The average sunshine in September is 9h.

UV index

In Plandome Heights, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in September in Plandome Heights?

In Plandome Heights, in September, the average high-temperature is 73.9°F (23.3°C), and the average low-temperature is 62.8°F (17.1°C).

What is the average humidity in September in Plandome Heights?

In September, the average relative humidity in Plandome Heights, New York, is 73%.

How many days does it rain in September in Plandome Heights?

In Plandome Heights, in September, it is raining for 13.9 days, with typically 2.52" (64mm) of accumulated precipitation.

When it does not snow in Plandome Heights?

In Plandome Heights, New York, snow does not fall in May through October.

How cold is the water in September in Plandome Heights?

In Plandome Heights, in September, the average water temperature is 70.2°F (21.2°C). Swimming in 70.2°F (21.2°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in September in Plandome Heights?

The average length of the day in September in Plandome Heights, New York, is 12.4h.

How long on average sun shines in September in Plandome Heights?

In September, the average sunshine in Plandome Heights is 9h.

How high is the UV index in September in Plandome Heights?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Plandome Heights, NY
  • Average high temperature in September: 73.9°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average humidity in September - Plandome Heights, NY
  • Average humidity in September: 73%

Months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (70%).

Average rainfall in September - Plandome Heights, NY
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is December (3.98").
The driest month (with the lowest rainfall) is February (2.36").

Average rainfall days in September - Plandome Heights, NY
  • Average rainfall days in September: 13.9 days

The month with the highest number of rainy days is July (17.8 days).
The month with the lowest number of rainy days is January (9.2 days).

Average snowfall in September - Plandome Heights, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.32").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in September - Plandome Heights, NY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.5 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September - Plandome Heights, NY
  • Average sea temperature in September: 70.1°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

Average daylight in September / Average sunshine in September - Plandome Heights, NY
  • Average daylight in September: 12.4h

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

  • Average sunshine in September: 9h

The month with most sunshine is July (Average sunshine: 10.7h).
The month with least sunshine is February (Average sunshine: 4.8h).

Average UV index in September - Plandome Heights, NY
  • Average UV index in September: 5

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).