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 arrival of September, Norfolk experiences a modest decline in average high-temperatures, transitioning from a warm 78.8°F (26°C) in August to a pleasant 71.8°F (22.1°C). Norfolk witnesses a consistent average low-temperature of 53.1°F (11.7°C) throughout September.Humidity
In September, the average relative humidity is 79%.Rainfall
The month with the least rainfall in Norfolk is September, when the rain falls for 13 days and typically collects 2.09" (53mm) of precipitation.Snowfall
In Norfolk, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:25 pm. On the last day of September, in Norfolk, Connecticut, sunrise is at 6:49 am and sunset at 6:35 pm EDT.
Sunshine
In Norfolk, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Norfolk?
What is the average humidity in September in Norfolk?
What is the driest month in Norfolk?
How much does it rain in Norfolk in September?
When it does not snow in Norfolk?
Does it snow in Norfolk in September?
What is the average length of the day in September in Norfolk?
What time are sunrise and sunset in September in Norfolk?
How many hours of sunshine does Norfolk have in September?
How high is the UV index in September in Norfolk?
Average temperature in September
Norfolk, CT
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Norfolk, CT
- Average pressure in September: 30.06"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
Norfolk, CT
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Norfolk, CT
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Norfolk, CT
- Average rainfall in September: 2.09"
The wettest months (with the highest rainfall) are October and December (3.31").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Norfolk, CT
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
Norfolk, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Norfolk, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Norfolk, CT
- Average daylight in September: 12h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Norfolk, CT
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in September
Norfolk, CT
- Average UV index in September: 4
The month with the highest UV index is June (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
Norfolk, CT
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Norfolk, CT
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Norfolk, Connecticut, USA
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