September weather forecastThousand Island Park, NY
September
Weather in September
September, the first month of the autumn in Thousand Island Park, is still a pleasant month, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 68.9°F (20.5°C).Temperature
In the transition to September, Thousand Island Park observes a minor drop in the average high-temperature, shifting from a warm 75.7°F (24.3°C) in August to a pleasant 68.9°F (20.5°C). Throughout the month of September, Thousand Island Park witnesses an average low-temperature of 54°F (12.2°C).Humidity
In Thousand Island Park, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall in Thousand Island Park is September, when the rain falls for 12.5 days and typically collects 1.5" (38mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Thousand Island Park, New York, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:39 pm. On the last day of September, in Thousand Island Park, sunrise is at 7:01 am and sunset at 6:46 pm EDT.
Sunshine
In September, the average sunshine in Thousand Island Park is 9.3h.UV index
In Thousand Island Park, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 3 during September leads to these instructions:
Act with care - The need to guard against sun damage is communicated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Thousand Island Park, NY
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in September
Thousand Island Park, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Thousand Island Park, NY
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Thousand Island Park, NY
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Thousand Island Park, NY
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is October (2.76").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Thousand Island Park, NY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is October (17.1 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
Thousand Island Park, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Thousand Island Park, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Thousand Island Park, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in September
Thousand Island Park, NY
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is January (7.9 days).
Average UV index in September
Thousand Island Park, 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
Thousand Island Park, NY
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in September
Thousand Island Park, NY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).





