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
The transition to September results in a modest reduction in average high-temperature, moving from a moderately hot 80.4°F (26.9°C) in August to a still warm 73.4°F (23°C). Middle Haddam observes an average nighttime temperature of 56.7°F (13.7°C) during September.Humidity
In September, the average relative humidity is 77%.Rainfall
The month with the least rainfall in Middle Haddam, Connecticut, is September, when the rain falls for 8.5 days and typically collects 0.39" (10mm) of precipitation.Snowfall
June through October are months without snowfall in Middle Haddam.Daylight
The average length of the day in September in Middle Haddam is 12h and 28min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:22 pm. On the last day of September, in Middle Haddam, sunrise is at 6:46 am and sunset at 6:33 pm EDT.
Sunshine
In Middle Haddam, the average sunshine in September is 8.3h.UV index
In Middle Haddam, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Middle Haddam?
What is the average humidity in September in Middle Haddam?
What is the driest month in Middle Haddam?
How many days does it rain in September in Middle Haddam?
When it does not snow in Middle Haddam?
How many hours of daylight does Middle Haddam have in September?
When is the sunrise / sunset in September in Middle Haddam?
How many hours of sunshine does Middle Haddam have in September?
What is the UV index reading in September in Middle Haddam?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in September /
Average sunshine in September
Middle Haddam, 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 12min).
- Average sunshine in September: 8h and 2min
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).
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).
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).
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).
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).
Middle Haddam, Connecticut, USA
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