September weather forecastHebron, CT
September
Weather in September
The first month of the autumn, September, is still a warm month in Hebron, Connecticut, with an average temperature varying between 56.7°F (13.7°C) and 73.4°F (23°C).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's 80.2°F (26.8°C) to a still warm 73.4°F (23°C). Hebron's nights in September cool down to an average low-temperature of 56.7°F (13.7°C).Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.35" (9mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:32 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Hebron, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hebron, CT
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in September
Hebron, 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
Hebron, CT
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Hebron, CT
- Average humidity in September: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Hebron, CT
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in September
Hebron, CT
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).
Average snowfall in September
Hebron, CT
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Hebron, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.4 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
Hebron, CT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in September
Hebron, CT
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).
Average UV index in September
Hebron, CT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Hebron, CT
- Average cloud cover in September: 38
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Hebron, 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).
