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
The onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 80.2°F (26.8°C) in August to a pleasant 73°F (22.8°C). Nighttime temperatures in Ridgefield consistently average a refreshing 56.5°F (13.6°C) during September.Humidity
In Ridgefield, the average relative humidity in September is 78%.Rainfall
In September, the rain falls for 9.7 days. Throughout September, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 123.7 rainfall days, and 11.65" (296mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Ridgefield.Daylight
In Ridgefield, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:26 pm. On the last day of September, in Ridgefield, sunrise is at 6:50 am and sunset at 6:37 pm EDT.
Sunshine
In September, the average sunshine in Ridgefield is 8.6h.UV index
The average daily maximum UV index in September in Ridgefield, Connecticut, is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What is the usual temperature for Ridgefield in September?
What is the average humidity in September in Ridgefield?
How many days does it rain in September in Ridgefield?
When it does not snow in Ridgefield?
Does it snow in Ridgefield in September?
How many hours of daylight does Ridgefield have in September?
When is the sunrise / sunset in September in Ridgefield?
How many hours of sunshine does Ridgefield have in September?
What is the UV index intensity in September in Ridgefield?
Average temperature in September
Ridgefield, 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 (33.4°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in September
Ridgefield, 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
Ridgefield, CT
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Ridgefield, CT
- Average humidity in September: 78%
The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Ridgefield, CT
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in September
Ridgefield, CT
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in September
Ridgefield, CT
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.75").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Ridgefield, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ridgefield, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Ridgefield, CT
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in September
Ridgefield, 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
Ridgefield, CT
- Average cloud cover in September: 37
The months with the most cloud cover are February, March and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Ridgefield, CT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, July, August, September, October, November and December (6mi).
The months with the lowest visibility are May and June (5mi).
Ridgefield, Connecticut, USA
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