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
South Hempstead in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 78.8°F (26°C) to a pleasant 72.5°F (22.5°C). South Hempstead, during September nights, observes a steady temperature, averaging at a refreshing 64.8°F (18.2°C).Humidity
In September, the average relative humidity is 74%.Rainfall
The month with the least rainfall in South Hempstead, New York, is September, when the rain falls for 9.5 days and typically collects 0.43" (11mm) of precipitation.Snowfall
April through September are months without snowfall in South Hempstead.Daylight
In September, the average length of the day in South Hempstead is 12h and 27min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:37 pm EDT.
Sunshine
In South Hempstead, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in South Hempstead is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the usual temperature for South Hempstead in September?
What is the average humidity in September in South Hempstead?
What is the driest month in South Hempstead?
How many days does it rain in September in South Hempstead?
When it does not snow in South Hempstead?
Does it snow in South Hempstead in September?
What is the average length of the day in September in South Hempstead?
What time are sunrise and sunset in September in South Hempstead?
How many hours of sunshine does South Hempstead have in September?
How high is the UV index in September in South Hempstead?
Average temperature in September
South Hempstead, NY
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in September: 64.8°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in September
South Hempstead, 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
South Hempstead, NY
- Average wind speed in September: 9.7mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in September
South Hempstead, NY
- Average humidity in September: 74%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in September
South Hempstead, NY
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in September
South Hempstead, NY
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
South Hempstead, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
South Hempstead, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Hempstead, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
South Hempstead, NY
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in September
South Hempstead, 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 and December (UV index 2).
Average cloud cover in September
South Hempstead, NY
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
South Hempstead, 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).
South Hempstead, New York, USA
Weather forecast for your location
2. Allow the app to use your location
