September weather forecastPenn Yan, NY
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Penn Yan, New York, with an average temperature fluctuating between 71.1°F (21.7°C) and 51.6°F (10.9°C).Temperature
Penn Yan's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 77.4°F (25.2°C) to an agreeable 71.1°F (21.7°C). An average nighttime temperature of 51.6°F (10.9°C) is noted in Penn Yan during the month of September.Humidity
In Penn Yan, the average relative humidity in September is 80%.Rainfall
In Penn Yan, during September, the rain falls for 14.2 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, in Penn Yan, there are 171.3 rainfall days, and 28.7" (729mm) of precipitation is accumulated.Snowfall
In Penn Yan, New York, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:50 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In Penn Yan, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Penn Yan, NY
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in September
Penn Yan, 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
Penn Yan, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in September
Penn Yan, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Penn Yan, NY
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in September
Penn Yan, NY
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Penn Yan, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Penn Yan, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Penn Yan, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in September
Penn Yan, NY
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (5.5 days).
Average UV index in September
Penn Yan, 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
Penn Yan, NY
- Average cloud cover in September: 37
The months with the most cloud cover are January and February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Penn Yan, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August and October (6mi).
The months with the lowest visibility are January, February, March, September, November and December (5mi).
