September weather forecast
Cheshire, CT

Weather in September

September, the first month of the autumn in Cheshire, is also a moderately hot month, with an average temperature fluctuating between 73.6°F (23.1°C) and 56.3°F (13.5°C).

Temperature

In Cheshire, the average high-temperature in September marginally drops from 80.8°F (27.1°C) in August to a still moderately hot 73.6°F (23.1°C). The average low-temperature, in September, is 56.3°F (13.5°C).

Humidity

In Cheshire, Connecticut, the average relative humidity in September is 77%.

Rainfall

September is the month with the least rainfall in Cheshire. Rain falls for 12.5 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

June through October are months without snowfall in Cheshire.

Daylight

The average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:25 pm. On the last day of September, in Cheshire, sunrise is at 6:47 am and sunset at 6:35 pm EDT.

Sunshine

In Cheshire, the average sunshine in September is 8.4h.

UV index

In September, the average daily maximum UV index in Cheshire is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Cheshire?

In Cheshire, in September, the average high-temperature is 73.6°F (23.1°C), and the average low-temperature is 56.3°F (13.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 86°F (30°C).

What is the average humidity in September in Cheshire?

The average relative humidity in September is 77%.

What is the driest month in Cheshire?

September is the month with the least rainfall in Cheshire, Connecticut. Rain falls for 12.5 days and accumulates 1.97" (50mm) of precipitation.

How much does it rain in Cheshire in September?

In Cheshire, during September, the rain falls for 12.5 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When it does not snow in Cheshire?

In Cheshire, snow does not fall in June through October.

How many hours of daylight does Cheshire have in September?

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

What time are sunrise and sunset in September in Cheshire?

In September, on the first day of the month, sunrise is at 6:18 am and sunset at 7:25 pm. On the last day of the month, in Cheshire, Connecticut, sunrise is at 6:47 am and sunset at 6:35 pm EDT.

How many hours of sunshine does Cheshire have in September?

In September, the average sunshine duration in Cheshire, Connecticut, is 8.4h.

What is the UV index reading in September in Cheshire?

The average daily maximum UV index in September in Cheshire is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cheshire, CT

Average temperature in September - Cheshire, CT
  • Average high temperature in September: 73.6°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in September
Cheshire, CT

Average pressure in September - Cheshire, CT
  • Average pressure in September: 30.05"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
Cheshire, CT

Average wind speed in September - Cheshire, CT
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Cheshire, CT

Average humidity in September - Cheshire, CT
  • Average humidity in September: 77%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in September
Cheshire, CT

Average rainfall in September - Cheshire, CT
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in September
Cheshire, CT

Average rainfall days in September - Cheshire, CT
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in September
Cheshire, CT

Average snowfall in September - Cheshire, CT
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Cheshire, CT

Average snowfall days in September - Cheshire, CT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.4 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
Cheshire, CT

Average daylight in September / Average sunshine in September - Cheshire, 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 24min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in September
Cheshire, CT

Average sunshine days in September - Cheshire, CT
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in September
Cheshire, CT

Average UV index in September - Cheshire, CT
  • Average UV index in September: 4

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, November and December (UV index 2).

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Average cloud cover in September
Cheshire, CT

Average cloud cover in September - Cheshire, CT
  • Average cloud cover in September: 38

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in September
Cheshire, CT

Average visibility in September - Cheshire, CT
  • Average visibility in September: 5mi

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

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