September weather forecast
West Hartford, CT

Weather in September

The first month of the autumn, September, is still a warm month in West Hartford, Connecticut, with temperature in the range of an average low of 55.2°F (12.9°C) and an average high of 73.4°F (23°C).

Temperature

In September, the average high-temperature marginally drops from a warm 80.8°F (27.1°C) in August to a still moderately hot 73.4°F (23°C). In September, in West Hartford, the average low-temperature is 55.2°F (12.9°C).

Humidity

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

Rainfall

The month with the least rainfall in West Hartford is September, when the rain falls for 13.5 days and typically collects 2.05" (52mm) of precipitation.

Snowfall

In West Hartford, snow does not fall in June through October.

Daylight

In West Hartford, the average length of the day in September is 12h and 28min.
On the first day of September in West Hartford, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:34 pm EDT.

Sunshine

In West Hartford, the average sunshine in September is 8.7h.

UV index

In West Hartford, Connecticut, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the 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 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. 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 temperature in September in West Hartford?

In September, in West Hartford, Connecticut, the average high-temperature is 73.4°F (23°C), and the average low-temperature is 55.2°F (12.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in August is appraised at 84.2°F (29°C).

What is the average humidity in September in West Hartford?

The average relative humidity in September in West Hartford is 77%.

What is the driest month in West Hartford?

The month with the least rainfall in West Hartford is September, when the rain falls for 13.5 days and typically collects 2.05" (52mm) of precipitation.

How many days does it rain in September in West Hartford?

In West Hartford, in September, it is raining for 13.5 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in West Hartford?

June through October are months without snowfall.

How many hours of daylight does West Hartford have in September?

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

What time are sunrise and sunset in September in West Hartford?

On the first day of September in West Hartford, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:34 pm EDT.

How long on average sun shines in September in West Hartford?

In West Hartford, Connecticut, the average sunshine duration in September is 8.7h.

What is the UV index intensity in September in West Hartford?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
West Hartford, CT

Average temperature in September - West Hartford, CT
  • Average high temperature in September: 73.4°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 (32.7°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in September
West Hartford, CT

Average pressure in September - West Hartford, 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
West Hartford, CT

Average wind speed in September - West Hartford, CT
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in September
West Hartford, CT

Average humidity in September - West Hartford, 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 (70%).

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Average rainfall in September
West Hartford, CT

Average rainfall in September - West Hartford, CT
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in September
West Hartford, CT

Average rainfall days in September - West Hartford, CT
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9 days).

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Average snowfall in September
West Hartford, CT

Average snowfall in September - West Hartford, CT
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
West Hartford, CT

Average snowfall days in September - West Hartford, CT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.3 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
West Hartford, CT

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

The month with the longest days is June (Average daylight: 15h and 10min).
The month with the shortest days is December (Average daylight: 9h and 13min).

  • Average sunshine in September: 8h and 42min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in September
West Hartford, CT

Average sunshine days in September - West Hartford, CT
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in September
West Hartford, CT

Average UV index in September - West Hartford, CT
  • Average UV index in September: 4

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

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Average cloud cover in September
West Hartford, CT

Average cloud cover in September - West Hartford, CT
  • Average cloud cover in September: 37

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
West Hartford, CT

Average visibility in September - West Hartford, CT
  • Average visibility in September: 5mi

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

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