September weather forecastAnnandale-on-Hudson, NY
September
Weather in September
September, the first month of the autumn in Annandale-on-Hudson, is still a pleasant month, with an average temperature varying between 73.2°F (22.9°C) and 52.3°F (11.3°C).Temperature
As September arrives, Annandale-on-Hudson's weather displays a minor decrease in high-temperatures, transitioning from August's warm 81.1°F (27.3°C) to a pleasant 73.2°F (22.9°C). In Annandale-on-Hudson, September's nights observe an average temperature dip to a fresh 52.3°F (11.3°C).Humidity
In Annandale-on-Hudson, the average relative humidity in September is 77%.Rainfall
In Annandale-on-Hudson, in September, it is raining for 11.3 days, with typically 1.69" (43mm) of accumulated precipitation. In Annandale-on-Hudson, during the entire year, the rain falls for 142.1 days and collects up to 25.91" (658mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:38 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
In Annandale-on-Hudson, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Annandale-on-Hudson, NY
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in September
Annandale-on-Hudson, 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 (29.93"Hg).
Average wind speed in September
Annandale-on-Hudson, NY
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is March (7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Annandale-on-Hudson, NY
- Average humidity in September: 77%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Annandale-on-Hudson, NY
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
Annandale-on-Hudson, NY
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Annandale-on-Hudson, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Annandale-on-Hudson, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Annandale-on-Hudson, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Annandale-on-Hudson, NY
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Annandale-on-Hudson, NY
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Annandale-on-Hudson, NY
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Annandale-on-Hudson, NY
- Average visibility in September: 5mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
