September weather forecast
New Preston, CT

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Weather in September

September, the first month of the autumn in New Preston, is still a pleasant month, with an average temperature varying between 53.4°F (11.9°C) and 72.3°F (22.4°C).

Temperature

September is characterized by a mild reduction in the average high-temperature, from a warm 79.9°F (26.6°C) in August to an agreeable 72.3°F (22.4°C). In the month of September, an average of 53.4°F (11.9°C) marks the low-temperature in New Preston.

Humidity

In September, the average relative humidity in New Preston, Connecticut, is 80%.

Rainfall

In New Preston, in September, during 13.7 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 161.7 rainfall days, and 34.41" (874mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:20 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:36 pm EDT.

Sunshine

In New Preston, the average sunshine in September is 8.4h.

UV index

In New Preston, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 4 in September translates into these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

An average high-temperature, in September, in New Preston, is 72.3°F (22.4°C) and the average low-temperature is 53.4°F (11.9°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in September?

In New Preston, the average relative humidity in September is 80%.

How many days does it rain in September?

In September, the rain falls for 13.7 days. Throughout September, 2.36" (60mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In New Preston, 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.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:20 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm EDT.

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

In New Preston, the average sunshine duration in September is 8.4h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
New Preston, CT

Average temperature in September - New Preston, CT
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in September: 53.4°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
New Preston, CT

Average pressure in September - New Preston, 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).

Average wind speed in September
New Preston, CT

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

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
New Preston, CT

Average humidity in September - New Preston, CT
  • Average humidity in September: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).

Average rainfall in September
New Preston, CT

Average rainfall in September - New Preston, CT
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is July (3.7").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in September
New Preston, CT

Average rainfall days in September - New Preston, CT
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).

Average snowfall in September
New Preston, CT

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

The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
New Preston, CT

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

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
New Preston, CT

Average daylight in September / Average sunshine in September - New Preston, CT
  • 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 12min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days in September
New Preston, CT

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

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in September
New Preston, CT

Average UV index in September - New Preston, 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).

Average cloud cover in September
New Preston, CT

Average cloud cover in September - New Preston, CT
  • Average cloud cover in September: 41

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in September
New Preston, CT

Average visibility in September - New Preston, 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).

New Preston, Connecticut, USA

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