September weather forecast
Somersville, CT

Weather in September

September, the first month of the autumn, in Somersville, is still a warm month, with average temperature varying between 73.8°F (23.2°C) and 54.5°F (12.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 81°F (27.2°C) in August, to a still moderately hot 73.8°F (23.2°C). The average low-temperature, in Somersville, is 54.5°F (12.5°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

The month with the least rainfall in Somersville is September when the rain falls for 11.9 days and typically collects 1.57" (40mm) of precipitation.

Snowfall

In Somersville snow does not fall in June through September.

Daylight

In Somersville, the average length of the day is 12.5h.

Sunshine

In Somersville, the average sunshine is 8.4h.

UV index

The average daily maximum UV index in Somersville is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Somersville?

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

What is the driest month in Somersville?

September is the month with the least rainfall in Somersville, Connecticut. Rain falls for 11.9 days and accumulates 1.57" (40mm) of precipitation.

How many days does it rain in September in Somersville?

In Somersville, Connecticut, during September, the rain falls for 11.9 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow in Somersville?

June through September are months without snowfall in Somersville.

Does it snow in Somersville in September?

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

How many hours of daylight does Somersville have in September?

The average length of the day in September in Somersville is 12.5h.

How long on average sun shines in September in Somersville?

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

How high is the UV index in September in Somersville?

In Somersville, Connecticut, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Somersville, CT

Average temperature in September - Somersville, CT
  • Average high temperature in September: 73.8°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (32.2°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in September
Somersville, CT

Average pressure in September - Somersville, CT
  • Average pressure in September: 30.06"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Somersville, CT

Average wind speed in September - Somersville, CT
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in September
Somersville, CT

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

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in September
Somersville, CT

Average rainfall in September - Somersville, CT
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is December (3.03").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in September
Somersville, CT

Average rainfall days in September - Somersville, CT
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in September
Somersville, CT

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

The month with the highest snowfall is February (5.47").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Somersville, CT

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

The month with the highest number of snowfall days is February (8.9 days).
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
Somersville, CT

Average daylight in September / Average sunshine in September - Somersville, CT
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 8.4h

Months with the most sunshine are July and August (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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Average sunshine days in September
Somersville, CT

Average sunshine days in September - Somersville, CT
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (12 days).

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Average UV index in September
Somersville, CT

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

Months with the highest UV index are June, July and August (UV index 6).
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
Somersville, CT

Average cloud cover in September - Somersville, CT
  • Average cloud cover in September: 39

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
Somersville, CT

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

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

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