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
East Chatham observes a small decrease in the average high-temperature with the arrival of September, falling from August's warm 78.8°F (26°C) to an agreeable 71.2°F (21.8°C). In September, the temperature in East Chatham drops to an average of 51.1°F (10.6°C) at night.Humidity
In September, the average relative humidity in East Chatham is 79%.Rainfall
In September, in East Chatham, the rain falls for 10.7 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. In East Chatham, during the entire year, the rain falls for 135.1 days and collects up to 20.39" (518mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in East Chatham is 12h and 28min.On the first day of September in East Chatham, sunrise is at 6:20 am and sunset at 7:27 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 in East Chatham, New York, is 8.8h.UV index
In September, the average daily maximum UV index in East Chatham is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests this advice:
Ensure safety - Recommendations to avert sunburn are presented. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for East Chatham in September?
What is the average humidity in September in East Chatham?
How many days does it rain in September in East Chatham?
When it does not snow in East Chatham?
Does it snow in East Chatham in September?
How many hours of daylight does East Chatham have in September?
What time are sunrise and sunset in September in East Chatham?
How long on average sun shines in September in East Chatham?
What is the UV index reading in September in East Chatham?
Average temperature in September
East Chatham, NY
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
East Chatham, NY
- 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 (29.92"Hg).
Average wind speed in September
East Chatham, NY
- Average wind speed in September: 5.5mph
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 (5mph).
Average humidity in September
East Chatham, NY
- Average humidity in September: 79%
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
East Chatham, NY
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
East Chatham, NY
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in September
East Chatham, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
East Chatham, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Chatham, NY
- 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 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
East Chatham, NY
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in September
East Chatham, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
East Chatham, NY
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
East Chatham, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
East Chatham, New York, USA
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