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
As August transitions into September, Plessis sees a gentle drop in the average high-temperature, transitioning from a warm 75.6°F (24.2°C) to a pleasant 69.1°F (20.6°C). Nighttime temperatures in September average to a fresh 52.2°F (11.2°C).Humidity
The average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.8 days and typically collects 1.77" (45mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Plessis, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:27 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:45 pm EDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the UV index of 3 transforms into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. 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 average September temperature?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in Plessis in September?
How many hours of daylight does Plessis have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Plessis have in September?
What is the UV index intensity in September in Plessis?
Average temperature in September
Plessis, NY
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in September
Plessis, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Plessis, NY
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Plessis, NY
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Plessis, NY
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Plessis, NY
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is October (17.4 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in September
Plessis, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (9.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Plessis, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plessis, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 2h and 54min).
Average sunshine days in September
Plessis, NY
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in September
Plessis, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Plessis, NY
- Average cloud cover in September: 33
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Plessis, NY
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Plessis, New York, USA
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