September weather forecastMilford, CT
September
Weather in September
September in Milford, Connecticut marks the arrival of autumn, introducing a cool change from August’s warm palate. A significant drop in high temperatures down to 72.7°F (22.6°C) suggests a departure from summer's high heat. The decrease in daylight and a slight increase in cloud cover indicate the advent of the fall season. A serene calm blankets the city as nature dresses in hues of fall towards the end of September. The city readies itself for the progressively colder and shorter days to follow in October.Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's warm 80.1°F (26.7°C) to a pleasant 72.7°F (22.6°C). In Milford, the expected average low-temperature for September is a refreshing 60.8°F (16°C).Humidity
In Milford, the average relative humidity in September is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.5 days and typically collects 2.4" (61mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In Milford, the average seawater temperature in September is 68.7°F (20.4°C).Note: Swimming is not an enjoyable activity for the majority when the water is at 68.7°F (20.4°C). The difficulty of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:19 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:35 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Milford, CT
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 60.8°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Milford, 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
Milford, CT
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Milford, CT
- Average humidity in September: 75%
The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).
Average rainfall in September
Milford, CT
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is December (4.13").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in September
Milford, 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 (9.4 days).
Average snowfall in September
Milford, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Milford, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Milford, CT
- Average sea temperature in September: 68.7°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (39°F).
Average daylight in September /
Average sunshine in September
Milford, CT
- Average daylight in September: 12h and 30min
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: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Milford, CT
- Average sunshine days in September: 13 days
The month with the most sunshine days is January (17 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Milford, 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
Milford, CT
- Average cloud cover in September: 33
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
Milford, 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).
