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
September's arrival subtly correlates with a reduction in the average high-temperature, down from a warm 75.9°F (24.4°C) in August to a pleasant 70.2°F (21.2°C). East Williamson experiences a mean temperature of 57.9°F (14.4°C) during September nights.Humidity
September is the least humid month in East Williamson, New York, with an average relative humidity of 76%.Rainfall
In East Williamson, in September, during 15.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In East Williamson, New York, during the entire year, the rain falls for 171.8 days and collects up to 32.76" (832mm) of precipitation.Snowfall
In East Williamson, snow does not fall in June through September.Daylight
The average length of the day in September in East Williamson is 12h and 29min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:51 pm EDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 3 during September translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the usual temperature for East Williamson in September?
What is the least humid month in East Williamson?
What is the average humidity in September in East Williamson?
How many days does it rain in September in East Williamson?
When it does not snow in East Williamson?
Does it snow in East Williamson in September?
How many hours of daylight does East Williamson have in September?
When is the sunrise / sunset in September in East Williamson?
How long on average sun shines in September in East Williamson?
What is the UV index intensity in September in East Williamson?
Average temperature in September
East Williamson, NY
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 57.9°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 (21°F).
Average pressure in September
East Williamson, NY
- Average pressure in September: 30.05"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 Williamson, NY
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
East Williamson, NY
- Average humidity in September: 76%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
East Williamson, NY
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in September
East Williamson, NY
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
East Williamson, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
East Williamson, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Williamson, NY
- Average daylight in September: 12h and 3min
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 0min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
East Williamson, NY
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is May (12.7 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in September
East Williamson, 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
East Williamson, NY
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
East Williamson, NY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
East Williamson, New York, USA
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