September weather forecast and climate
Stafford, CT

Weather in September

The first month of the autumn, September, is also a moderately hot month in Stafford, Connecticut, with average temperature fluctuating between 73.4°F (23°C) and 54.5°F (12.5°C).

Temperature

In Stafford, Connecticut, the average high-temperature marginally drops, from 80.1°F (26.7°C) in August, to a still moderately hot 73.4°F (23°C). In Stafford, in September, the average low-temperature is 54.5°F (12.5°C).

Humidity

In Stafford, the average relative humidity is 78%.

Rainfall

The month with the least rainfall is September when the rain falls for 7.9 days and typically collects 0.39" (10mm) of precipitation.

Snowfall

In Stafford snow does not fall in June through October.

Daylight

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

Sunshine

In September, the average sunshine in Stafford, Connecticut, is 8.5h.

UV index

In Stafford, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the 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 average humidity in September in Stafford?

In September, the average relative humidity is 78%.

What is the driest month in Stafford?

The month with the least rainfall in Stafford, Connecticut, is September when the rain falls for 7.9 days and typically collects 0.39" (10mm) of precipitation.

How many days does it rain in September in Stafford?

In Stafford, Connecticut, in September, during 7.9 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

When it does not snow in Stafford?

In Stafford snow does not fall in June through October.

How many hours of daylight does Stafford have in September?

In September, the average length of the day in Stafford, Connecticut, is 12.5h.

How long on average sun shines in September in Stafford?

In September, the average sunshine in Stafford is 8.5h.

How high is the UV index in September in Stafford?

In September, the average daily maximum UV index in Stafford, Connecticut, is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in September
Stafford, CT

Average temperature in September - Stafford, 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 (32.4°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in September
Stafford, CT

Average pressure in September - Stafford, 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
Stafford, CT

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

The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Stafford, CT

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

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
Stafford, CT

Average rainfall in September - Stafford, CT
  • Average rainfall in September: 0.39"

The wettest months (with the highest rainfall) are May, June and July (1.1").
The driest month (with the least rainfall) is September (0.39").

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Average rainfall days in September
Stafford, CT

Average rainfall days in September - Stafford, CT
  • Average rainfall days in September: 7.9 days

The month with the highest number of rainy days is June (12.1 days).
Months with the least rainy days are January and February (5.5 days).

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Average snowfall in September
Stafford, CT

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

The month with the highest snowfall is February (1.5").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Stafford, CT

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

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

Average daylight in September / Average sunshine in September - Stafford, 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: 8.5h

Months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in September
Stafford, CT

Average sunshine days in September - Stafford, CT
  • Average sunshine days in September: 19.8 days

The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is June (15.7 days).

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Average UV index in September
Stafford, CT

Average UV index in September - Stafford, 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
Stafford, CT

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

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
Stafford, CT

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

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

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