Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's moderately hot 76.3°F (24.6°C) to a pleasant 69.6°F (20.9°C). The temperature lowers to an average of 50°F (10°C) during September nights.Humidity
In September, the average relative humidity is 81%.Rainfall
In Lisle, New York, in September, during 13.5 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Lisle, during the entire year, the rain falls for 173.5 days and collects up to 35.67" (906mm) of precipitation.Snowfall
June through September are months without snowfall in Lisle.Daylight
In Lisle, the average length of the day in September is 12h and 28min.On the first day of September in Lisle, sunrise is at 6:30 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:46 pm EDT.
Sunshine
In September, the average sunshine in Lisle is 8.4h.UV index
The average daily maximum UV index in September in Lisle, New York, is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the usual temperature for Lisle in September?
What is the average humidity in September in Lisle?
How many days does it rain in September in Lisle?
When it does not snow in Lisle?
Does it snow in Lisle in September?
What is the average length of the day in September in Lisle?
When are sunrise and sunset in September in Lisle?
How many hours of sunshine does Lisle have in September?
What is the UV index reading in September in Lisle?
Average temperature in September
Lisle, NY
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in September
Lisle, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Lisle, NY
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Lisle, NY
- Average humidity in September: 81%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June and July (80%).
Average rainfall in September
Lisle, NY
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is June (3.58").
The driest months (with the least rainfall) are January and November (2.4").
Average rainfall days in September
Lisle, NY
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Lisle, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (10.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lisle, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lisle, NY
- Average daylight in September: 12h and 3min
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 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in September
Lisle, NY
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (5.7 days).
Average UV index in September
Lisle, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Lisle, NY
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in September
Lisle, NY
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Lisle, New York, USA
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