Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the beginning of September, the average high-temperature in East Haven shows a small decrease, transitioning from a warm 79.7°F (26.5°C) in August to a pleasant 72.5°F (22.5°C). East Haven records an average nighttime low of 60.3°F (15.7°C) in September.Humidity
In September, the average relative humidity in East Haven is 75%.Rainfall
The months with the least rainfall in East Haven are January and September Rain falls for 9.5 days and accumulates 0.51" (13mm) of rain.Snowfall
April through November are months without snowfall.Daylight
In East Haven, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:18 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:34 pm EDT.
Sunshine
The average sunshine in September in East Haven is 9h.UV index
The average daily maximum UV index in September in East Haven is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Take precautions - Protection against sunburn is recommended. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are September temperatures in East Haven?
What is the average humidity in September in East Haven?
What is the driest month in East Haven?
How many days does it rain in September in East Haven?
When it does not snow in East Haven?
What is the average length of the day in September in East Haven?
When is the sunrise / sunset in September in East Haven?
How many hours of sunshine does East Haven have in September?
What is the UV index reading in September in East Haven?
Average temperature in September
East Haven, CT
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in September
East Haven, CT
- Average pressure in September: 30.05"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).
Average wind speed in September
East Haven, CT
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
East Haven, CT
- Average humidity in September: 75%
The month with the highest relative humidity is June (77%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
East Haven, CT
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is July (1.14").
The driest months (with the least rainfall) are January and September (0.51").
Average rainfall days in September
East Haven, CT
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
East Haven, CT
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
East Haven, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
East Haven, CT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
East Haven, CT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is August (16.3 days).
Average UV index in September
East Haven, 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).
Average cloud cover in September
East Haven, CT
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
East Haven, CT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
East Haven, Connecticut, USA
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