September weather forecastGrahamsville, NY
September
Weather in September
September, the first month of the autumn in Grahamsville, is still a refreshing month, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 67.8°F (19.9°C).Temperature
September brings a minor shift in the average high-temperature, adjusting from a warm 74.3°F (23.5°C) in August to a refreshing 67.8°F (19.9°C). During September, Grahamsville experiences a consistent low-temperature average of 48.2°F (9°C).Humidity
In September, the average relative humidity is 83%.Rainfall
In Grahamsville, New York, during September, the rain falls for 13.7 days and regularly aggregates up to 2.83" (72mm) of precipitation. In Grahamsville, during the entire year, the rain falls for 157.3 days and collects up to 37.91" (963mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:24 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
The average sunshine in September is 7.2h.UV index
In Grahamsville, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grahamsville, NY
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in September: 48.2°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in September
Grahamsville, 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
Grahamsville, NY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Grahamsville, NY
- Average humidity in September: 83%
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (80%).
Average rainfall in September
Grahamsville, NY
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is February (2.32").
Average rainfall days in September
Grahamsville, NY
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (19.3 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall in September
Grahamsville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (10.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grahamsville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grahamsville, NY
- Average daylight in September: 12h and 30min
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: 7h and 12min
The month with the most sunshine is July (Average sunshine: 8h and 54min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in September
Grahamsville, NY
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in September
Grahamsville, 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, February, March, November and December (UV index 1).
Average cloud cover in September
Grahamsville, NY
- Average cloud cover in September: 53
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 48).
Average visibility in September
Grahamsville, NY
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
