September weather forecast
Stamford, NY

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Weather in September

The first month of the autumn, September, is still a pleasant month in Stamford, New York, with an average temperature varying between 48°F (8.9°C) and 68°F (20°C).

Temperature

The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 74.5°F (23.6°C) in August to an agreeable 68°F (20°C). An average temperature of 48°F (8.9°C) is recorded in Stamford during the nights in September.

Humidity

The average relative humidity in September is 82%.

Rainfall

In Stamford, New York, in September, during 12.7 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 150.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:41 pm EDT.

Sunshine

In September, the average sunshine in Stamford, New York, is 8.1h.

UV index

In Stamford, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 3 during September translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What is the average September temperature in Stamford?

In September, the average high-temperature and low-temperature in Stamford are 68°F (20°C) and 48°F (8.9°C) respectively.

What is the average humidity in September in Stamford?

The average relative humidity in September in Stamford is 82%.

How many days does it rain in September in Stamford?

In Stamford, in September, it is raining for 12.7 days, with typically 2.01" (51mm) of accumulated precipitation.

When it does not snow in Stamford?

In Stamford, snow does not fall in June through September.

Does it snow in Stamford in September?

In Stamford, New York, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Stamford?

In Stamford, New York, the average day length in September is 12h and 28min.

When are sunrise and sunset in September in Stamford?

On the first day of September, sunrise is at 6:24 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:41 pm EDT.

How many hours of sunshine does Stamford have in September?

In Stamford, New York, the average sunshine duration in September is 8.1h.

How high is the UV index in September in Stamford?

In September, the average daily maximum UV index in Stamford, New York, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from 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
Stamford, NY

Average temperature in September - Stamford, NY
  • Average high temperature in September: 68°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in September: 48°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in September
Stamford, NY

Average pressure in September - Stamford, 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).

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Average wind speed in September
Stamford, NY

Average wind speed in September - Stamford, NY
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in September
Stamford, NY

Average humidity in September - Stamford, NY
  • Average humidity in September: 82%

The months with the highest relative humidity are February and December (87%).
The months with the lowest relative humidity are April, May, June and July (80%).

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Average rainfall in September
Stamford, NY

Average rainfall in September - Stamford, NY
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is January (1.5").

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Average rainfall days in September
Stamford, NY

Average rainfall days in September - Stamford, NY
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (4.6 days).

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Average snowfall in September
Stamford, NY

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

The month with the highest snowfall is December (9.84").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Stamford, NY

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

The month with the highest number of snowfall days is January (19 days).
The 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
Stamford, NY

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

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Average sunshine days in September
Stamford, NY

Average sunshine days in September - Stamford, NY
  • Average sunshine days in September: 15 days

The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (7.5 days).

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Average UV index in September
Stamford, NY

Average UV index in September - Stamford, NY
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in September
Stamford, NY

Average cloud cover in September - Stamford, NY
  • Average cloud cover in September: 45

The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 42).

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Average visibility in September
Stamford, NY

Average visibility in September - Stamford, NY
  • Average visibility in September: 4mi

The months with the highest visibility are January, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February, March and September (4mi).

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Stamford, New York, USA

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