September weather forecastGeorgetown, CT
September
Weather in September
September, the first month of the autumn in Georgetown, is still a pleasant month, with an average temperature varying between 59.4°F (15.2°C) and 73°F (22.8°C).Temperature
A subtle shift in Georgetown's weather is observed as August turns into September, with the average high temperature reducing from a moderately hot 80.4°F (26.9°C) to a pleasant 73°F (22.8°C). During the nights in September, Georgetown observes an average low-temperature of 59.4°F (15.2°C).Humidity
In September, the average relative humidity is 76%.Rainfall
In Georgetown, in September, during 13.6 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Georgetown, there are 170.4 rainfall days, and 38.23" (971mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In Georgetown, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:20 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:36 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in Georgetown, Connecticut, is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Georgetown, CT
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in September
Georgetown, 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
Georgetown, CT
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Georgetown, CT
- Average humidity in September: 76%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Georgetown, CT
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is January (2.52").
Average rainfall days in September
Georgetown, CT
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Georgetown, CT
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Georgetown, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Georgetown, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Georgetown, CT
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Georgetown, 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
Georgetown, CT
- Average cloud cover in September: 34
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Georgetown, 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).
