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
Wilton's September weather features a light decline in high-temperatures, reducing from a warm 80.2°F (26.8°C) in August to an agreeable 72.9°F (22.7°C). In Wilton, an average temperature of 60.1°F (15.6°C) is noted during September nights.Humidity
In September, the average relative humidity in Wilton is 75%.Rainfall
In Wilton, in September, it is raining for 14 days, with typically 2.72" (69mm) of accumulated precipitation. In Wilton, during the entire year, the rain falls for 170.2 days and collects up to 38.62" (981mm) of precipitation.Snowfall
In Wilton, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:26 pm. On the last day of September, in Wilton, sunrise is at 6:50 am and sunset at 6:36 pm EDT.
Sunshine
In September, the average sunshine in Wilton, Connecticut, is 8.9h.UV index
In Wilton, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the temperature in September in Wilton?
What is the average humidity in September in Wilton?
How many days does it rain in September in Wilton?
When it does not snow in Wilton?
How many hours of daylight does Wilton have in September?
When are sunrise and sunset in September in Wilton?
How long on average sun shines in September in Wilton?
How high is the UV index in September in Wilton?
Average temperature in September
Wilton, CT
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in September
Wilton, 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
Wilton, CT
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in September
Wilton, CT
- Average humidity in September: 75%
The months with the highest relative humidity are February, May, June, October and December (76%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Wilton, CT
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is January (2.44").
Average rainfall days in September
Wilton, CT
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in September
Wilton, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Wilton, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.3 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
Wilton, 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 18min).
- Average sunshine in September: 8h and 5min
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
Wilton, CT
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Wilton, 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
Wilton, 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
Wilton, 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).
Wilton, Connecticut, USA
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