September weather forecast
Middle Haddam, CT

Weather in September

September, the first month of the autumn in Middle Haddam, is also a moderately hot month, with an average temperature varying between 73.4°F (23°C) and 56.7°F (13.7°C).

Temperature

In Middle Haddam, the average high-temperature in September slightly decreases from 80.4°F (26.9°C) in August to a still warm 73.4°F (23°C). The average low-temperature, in Middle Haddam, is 56.7°F (13.7°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

September is the month with the least rainfall in Middle Haddam. Rain falls for 8.5 days and accumulates 0.39" (10mm) of precipitation.

Snowfall

In Middle Haddam, Connecticut, snow does not fall in June through October.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:24 pm. On the last day of September, in Middle Haddam, sunrise is at 6:45 am and sunset at 6:34 pm EDT.

Sunshine

In September, the average sunshine in Middle Haddam is 8.3h.

UV index

In Middle Haddam, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
[Resources]

FAQ

What is the temperature in September in Middle Haddam?

The average high-temperature, in September, in Middle Haddam, is 73.4°F (23°C), while the average low-temperature is 56.7°F (13.7°C). in July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 89.6°F (32°C).

What is the average humidity in September in Middle Haddam?

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

What is the driest month in Middle Haddam?

The month with the least rainfall in Middle Haddam is September, when the rain falls for 8.5 days and typically collects 0.39" (10mm) of precipitation.

How many days does it rain in September in Middle Haddam?

In Middle Haddam, in September, it is raining for 8.5 days, with typically 0.39" (10mm) of accumulated precipitation.

When it does not snow in Middle Haddam?

June through October are months without snowfall.

What is the average length of the day in September in Middle Haddam?

The average day length in September in Middle Haddam, Connecticut, is 12h and 28min.

When is the sunrise / sunset in September in Middle Haddam?

In September, on the first day of the month, sunrise is at 6:16 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:34 pm EDT.

How long on average sun shines in September in Middle Haddam?

In September, the average sunshine duration in Middle Haddam is 8.3h.

What is the UV index intensity in September in Middle Haddam?

In September, the average daily maximum UV index in Middle Haddam, Connecticut, is 4. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Middle Haddam, CT

Average temperature in September - Middle Haddam, CT
  • Average high temperature in September: 73.4°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in September: 56.7°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 (22.8°F).

[Resources]

Average pressure in September
Middle Haddam, CT

Average pressure in September - Middle Haddam, 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).

[Resources]

Average wind speed in September
Middle Haddam, CT

Average wind speed in September - Middle Haddam, CT
  • Average wind speed in September: 6.3mph

The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

[Resources]

Average humidity in September
Middle Haddam, CT

Average humidity in September - Middle Haddam, CT
  • Average humidity in September: 77%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall in September
Middle Haddam, CT

Average rainfall in September - Middle Haddam, CT
  • Average rainfall in September: 0.39"

The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.39").

[Resources]

Average rainfall days in September
Middle Haddam, CT

Average rainfall days in September - Middle Haddam, CT
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is January (5.9 days).

[Resources]

Average snowfall in September
Middle Haddam, CT

Average snowfall in September - Middle Haddam, CT
  • Average snowfall in September: 0"

The month with the highest snowfall is March (1.14").
The months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Middle Haddam, CT

Average snowfall days in September - Middle Haddam, CT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Middle Haddam, CT

Average daylight in September / Average sunshine in September - Middle Haddam, 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 18min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

[Resources]

Average sunshine days in September
Middle Haddam, CT

Average sunshine days in September - Middle Haddam, CT
  • Average sunshine days in September: 19.1 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (16.3 days).

[Resources]

Average UV index in September
Middle Haddam, CT

Average UV index in September - Middle Haddam, 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).

[Resources]

Average cloud cover in September
Middle Haddam, CT

Average cloud cover in September - Middle Haddam, CT
  • Average cloud cover in September: 39

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

[Resources]

Average visibility in September
Middle Haddam, CT

Average visibility in September - Middle Haddam, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location