September weather forecastFlower Hill, NY
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Flower Hill, New York, with an average temperature fluctuating between 63.5°F (17.5°C) and 73.4°F (23°C).Temperature
In the transition to September, Flower Hill observes a minor drop in the average high-temperature, shifting from 80.4°F (26.9°C) in August to a still warm 73.4°F (23°C). Throughout September, Flower Hill registers a consistent average low-temperature of 63.5°F (17.5°C).Humidity
In Flower Hill, the average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 2.4" (61mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Flower Hill is 12h and 27min.On the first day of September in Flower Hill, sunrise is at 6:22 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:37 pm EDT.
Sunshine
The average sunshine in September in Flower Hill is 9h.UV index
The average daily maximum UV index in September in Flower Hill is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Flower Hill, NY
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in September: 63.5°F
The months with the highest average low temperature are July and August (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Flower Hill, NY
- Average pressure in September: 30.05"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
Flower Hill, NY
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Flower Hill, NY
- Average humidity in September: 73%
The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).
Average rainfall in September
Flower Hill, NY
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in September
Flower Hill, NY
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Flower Hill, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Flower Hill, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Flower Hill, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Flower Hill, NY
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Flower Hill, NY
- Average UV index in September: 5
The months with the highest UV index are June, July and August (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
Flower Hill, NY
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in September
Flower Hill, NY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
