September weather forecast
Hebron, CT

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Weather in September

September, the first month of the autumn in Hebron, is still a warm month, with an average temperature fluctuating between 73.4°F (23°C) and 56.7°F (13.7°C).

Temperature

The start of September involves a subtle temperature drop, shifting from a warm 80.2°F (26.8°C) in August to a still moderately hot 73.4°F (23°C). The average temperature during September nights in Hebron, Connecticut, is registered at a moderate 56.7°F (13.7°C).

Humidity

The average relative humidity in September in Hebron is 78%.

Rainfall

The month with the least rainfall is September, when the rain falls for 7.5 days and typically collects 0.35" (9mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September in Hebron is 12h and 28min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:22 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 in Hebron is 8.4h.

UV index

In Hebron, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transforms into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What is the temperature in September in Hebron?

In Hebron, 73.4°F (23°C) is the average high-temperature and 56.7°F (13.7°C) is the average low-temperature during September. In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in September in Hebron?

In Hebron, Connecticut, the average relative humidity in September is 78%.

What is the driest month in Hebron?

September is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.35" (9mm) of precipitation.

How many days does it rain in September in Hebron?

In Hebron, in September, during 7.5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When it does not snow in Hebron?

June through October are months without snowfall in Hebron, Connecticut.

How many hours of daylight does Hebron have in September?

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

When is the sunrise / sunset in September in Hebron?

On the first day of September in Hebron, sunrise is at 6:16 am and sunset at 7:22 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 Hebron?

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

How high is the UV index in September in Hebron?

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
Hebron, CT

Average temperature in September - Hebron, CT
  • Average high temperature in September: 73.4°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 (34.3°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure in September
Hebron, CT

Average pressure in September - Hebron, CT
  • 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
Hebron, CT

Average wind speed in September - Hebron, CT
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in September
Hebron, CT

Average humidity in September - Hebron, CT
  • Average humidity in September: 78%

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
Hebron, CT

Average rainfall in September - Hebron, CT
  • Average rainfall in September: 0.35"

The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days in September
Hebron, CT

Average rainfall days in September - Hebron, CT
  • Average rainfall days in September: 7.5 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).

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Average snowfall in September
Hebron, CT

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

The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Hebron, CT

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

The month with the highest number of snowfall days is February (6.4 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
Hebron, CT

Average daylight in September / Average sunshine in September - Hebron, 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 August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

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Average sunshine days in September
Hebron, CT

Average sunshine days in September - Hebron, CT
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).

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Average UV index in September
Hebron, CT

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Hebron, CT

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

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
Hebron, CT

Average visibility in September - Hebron, CT
  • Average visibility in September: 6mi

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

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Hebron, Connecticut, USA

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