September weather forecastVan Hornesville, NY
September
Weather in September
September, the first month of the autumn in Van Hornesville, is still a pleasant month, with an average temperature fluctuating between 50°F (10°C) and 69.8°F (21°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's warm 76.1°F (24.5°C) to a pleasant 69.8°F (21°C). September nights are marked by an average temperature drop to a cool 50°F (10°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Van Hornesville, in September, it is raining for 9.4 days, with typically 1.22" (31mm) of accumulated precipitation. In Van Hornesville, during the entire year, the rain falls for 117.1 days and collects up to 17.44" (443mm) of precipitation.Snowfall
In Van Hornesville, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:41 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In Van Hornesville, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 3 in September translates into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Around midday, solar radiation is most harmful; hence, exposure should be limited. 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
Average temperature in September
Van Hornesville, NY
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in September
Van Hornesville, 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
Van Hornesville, NY
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Van Hornesville, NY
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Van Hornesville, NY
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is March (0.94").
Average rainfall days in September
Van Hornesville, NY
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is April (12.8 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Van Hornesville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Van Hornesville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Van Hornesville, 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 54min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in September
Van Hornesville, NY
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is September (18.9 days).
The month with the least sunshine days is February (10.9 days).
Average UV index in September
Van Hornesville, NY
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Van Hornesville, NY
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Van Hornesville, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and December (5mi).
