September weather forecast
New Fairfield, CT

Weather in September

The first month of the autumn, September, is also an agreeable month in New Fairfield, Connecticut, with an average temperature varying between 54.7°F (12.6°C) and 72.9°F (22.7°C).

Temperature

In New Fairfield, the average high-temperature in September marginally drops from a warm 80.2°F (26.8°C) in August to a pleasant 72.9°F (22.7°C). In September, the average low-temperature is 54.7°F (12.6°C).

Humidity

The average relative humidity in September in New Fairfield is 79%.

Rainfall

In New Fairfield, during September, the rain falls for 13.6 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 163.7 rainfall days, and 37.32" (948mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In New Fairfield, the average length of the day in September is 12h and 28min.
On the first day of September in New Fairfield, sunrise is at 6:20 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:38 pm EDT.

Sunshine

The average sunshine in September in New Fairfield is 8.2h.

UV index

In New Fairfield, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in New Fairfield?

The average high-temperature, in September, is 72.9°F (22.7°C), while the average low-temperature is 54.7°F (12.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in July is appraised at 87.8°F (31°C).

What is the average humidity in September in New Fairfield?

In New Fairfield, the average relative humidity in September is 79%.

How many days does it rain in September in New Fairfield?

In New Fairfield, Connecticut, in September, during 13.6 rainfall days, 2.48" (63mm) of precipitation is typically accumulated.

When it does not snow in New Fairfield?

In New Fairfield, snow does not fall in June through September.

Does it snow in New Fairfield in September?

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

How many hours of daylight does New Fairfield have in September?

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

What time are sunrise and sunset in September in New Fairfield?

In September, on the first day of the month, sunrise is at 6:20 am and sunset at 7:27 pm. On the last day of the month, in New Fairfield, sunrise is at 6:49 am and sunset at 6:38 pm EDT.

How many hours of sunshine does New Fairfield have in September?

In September, the average sunshine duration in New Fairfield, Connecticut, is 8.2h.

How high is the UV index in September in New Fairfield?

The average daily maximum UV index in September in New Fairfield is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
New Fairfield, CT

Average temperature in September - New Fairfield, CT
  • Average high temperature in September: 72.9°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure in September
New Fairfield, CT

Average pressure in September - New Fairfield, CT
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
New Fairfield, CT

Average wind speed in September - New Fairfield, CT
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in September
New Fairfield, CT

Average humidity in September - New Fairfield, CT
  • Average humidity in September: 79%

The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in September
New Fairfield, CT

Average rainfall in September - New Fairfield, CT
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is July (3.9").
The driest month (with the least rainfall) is January (2.36").

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Average rainfall days in September
New Fairfield, CT

Average rainfall days in September - New Fairfield, CT
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (7.5 days).

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Average snowfall in September
New Fairfield, CT

Average snowfall in September - New Fairfield, CT
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
New Fairfield, CT

Average snowfall days in September - New Fairfield, CT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (10.3 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
New Fairfield, CT

Average daylight in September / Average sunshine in September - New Fairfield, CT
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in September: 8h and 12min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in September
New Fairfield, CT

Average sunshine days in September - New Fairfield, CT
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is June (10.2 days).

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Average UV index in September
New Fairfield, CT

Average UV index in September - New Fairfield, CT
  • Average UV index in September: 4

The month with the highest UV index is June (UV index 6).
The 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
New Fairfield, CT

Average cloud cover in September - New Fairfield, CT
  • Average cloud cover in September: 42

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in September
New Fairfield, CT

Average visibility in September - New Fairfield, CT
  • Average visibility in September: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

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