September weather forecast
Northwest Harbor, NY

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Weather in September

September, the first month of the autumn in Northwest Harbor, is still a pleasant month, with an average temperature varying between 70.3°F (21.3°C) and 65.1°F (18.4°C).

Temperature

September's advent notes a subtle adjustment in average high-temperature to a pleasant 70.3°F (21.3°C) from August. An average low-temperature of 65.1°F (18.4°C), slightly less than the daytime peak, marks the month of September.

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall in Northwest Harbor is September, when the rain falls for 12.6 days and typically collects 2.09" (53mm) of precipitation.

Snowfall

In Northwest Harbor, New York, snow does not fall in June through October.

Daylight

In Northwest Harbor, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:21 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:32 pm EDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September in Northwest Harbor is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the average September temperature in Northwest Harbor?

During September, Northwest Harbor experiences an average high-temperature of 70.3°F (21.3°C) and a low-temperature of 65.1°F (18.4°C).

What is the average humidity in September in Northwest Harbor?

In Northwest Harbor, the average relative humidity in September is 76%.

What is the driest month in Northwest Harbor?

The month with the least rainfall in Northwest Harbor is September, when the rain falls for 12.6 days and typically collects 2.09" (53mm) of precipitation.

How much does it rain in Northwest Harbor in September?

In Northwest Harbor, New York, during September, the rain falls for 12.6 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow in Northwest Harbor?

June through October are months without snowfall in Northwest Harbor.

How many hours of daylight does Northwest Harbor have in September?

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

When are sunrise and sunset in September in Northwest Harbor?

On the first day of September in Northwest Harbor, sunrise is at 6:16 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:32 pm EDT.

How long on average sun shines in September in Northwest Harbor?

The average sunshine duration in September in Northwest Harbor, New York, is 8.9h.

How high is the UV index in September in Northwest Harbor?

In September, the average daily maximum UV index in Northwest Harbor, New York, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Northwest Harbor, NY

Average temperature in September - Northwest Harbor, NY
  • Average high temperature in September: 70.3°F

The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 65.1°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

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Average pressure in September
Northwest Harbor, NY

Average pressure in September - Northwest Harbor, NY
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Northwest Harbor, NY

Average wind speed in September - Northwest Harbor, NY
  • Average wind speed in September: 12.7mph

The windiest month (with the highest average wind speed) is January (16.4mph).
The calmest month (with the lowest average wind speed) is July (10.8mph).

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Average humidity in September
Northwest Harbor, NY

Average humidity in September - Northwest Harbor, NY
  • Average humidity in September: 76%

The months with the highest relative humidity are May and June (82%).
The month with the lowest relative humidity is November (72%).

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Average rainfall in September
Northwest Harbor, NY

Average rainfall in September - Northwest Harbor, NY
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days in September
Northwest Harbor, NY

Average rainfall days in September - Northwest Harbor, NY
  • Average rainfall days in September: 12.6 days

The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in September
Northwest Harbor, NY

Average snowfall in September - Northwest Harbor, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is March (1.97").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Northwest Harbor, NY

Average snowfall days in September - Northwest Harbor, NY
  • Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Northwest Harbor, NY

Average daylight in September / Average sunshine in September - Northwest Harbor, 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 August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

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Average sunshine days in September
Northwest Harbor, NY

Average sunshine days in September - Northwest Harbor, NY
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is November (18.4 days).
The months with the least sunshine days are July and August (13.3 days).

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Average UV index in September
Northwest Harbor, NY

Average UV index in September - Northwest Harbor, NY
  • Average UV index in September: 5

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 and December (UV index 2).

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Average cloud cover in September
Northwest Harbor, NY

Average cloud cover in September - Northwest Harbor, NY
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Northwest Harbor, NY

Average visibility in September - Northwest Harbor, 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).

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Northwest Harbor, New York, USA

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