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 commencement of September indicates a gentle shift in the average high-temperature, receding from August's warm 77.5°F (25.3°C) to a pleasant 70.7°F (21.5°C). In Chichester, September's nights observe an average temperature dip to a cool 50.5°F (10.3°C).Humidity
The average relative humidity in September is 80%.Rainfall
In Chichester, New York, in September, during 10.9 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, in Chichester, there are 138.1 rainfall days, and 21.1" (536mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Chichester, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:30 pm. On the last day of September, in Chichester, sunrise is at 6:53 am and sunset at 6:40 pm EDT.
Sunshine
In September, the average sunshine in Chichester is 9h.UV index
In Chichester, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Chichester?
What is the average humidity in September in Chichester?
How much does it rain in Chichester in September?
When it does not snow in Chichester?
Does it snow in Chichester in September?
How many hours of daylight does Chichester have in September?
What time are sunrise and sunset in September in Chichester?
How many hours of sunshine does Chichester have in September?
What is the UV index reading in September in Chichester?
Average temperature in September
Chichester, NY
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Chichester, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Chichester, NY
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Chichester, NY
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (77%).
Average rainfall in September
Chichester, NY
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in September
Chichester, NY
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (6 days).
Average snowfall in September
Chichester, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Chichester, NY
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Chichester, 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 12min).
- Average sunshine in September: 9h and 0min
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 6min).
Average sunshine days in September
Chichester, NY
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Chichester, 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, October, November and December (UV index 2).
Average cloud cover in September
Chichester, NY
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Chichester, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Chichester, New York, USA
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