May weather forecastSouth Hempstead, NY
May
Weather in May
The last month of the spring, May, is a refreshing month in South Hempstead, New York, with an average temperature ranging between max 63.1°F (17.3°C) and min 54.5°F (12.5°C).Temperature
An escalation in the average high-temperature is seen with the onset of May, moving from a fresh 53.6°F (12°C) in April to an enjoyable 63.1°F (17.3°C). South Hempstead maintains an average of approximately a cool 54.5°F (12.5°C) during May nights, with only a minimal decrease from the daytime temperature.Humidity
May is the most humid month, with an average relative humidity of 77%.Rainfall
In May, the rain falls for 11.7 days. Throughout May, 0.83" (21mm) of precipitation is accumulated. In South Hempstead, during the entire year, the rain falls for 112.1 days and collects up to 8.66" (220mm) of precipitation.Snowfall
In South Hempstead, snow does not fall in April through September.Daylight
In South Hempstead, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:50 pm. On the last day of May, sunrise is at 5:25 am and sunset at 8:18 pm EDT.
Sunshine
The average sunshine in May is 8.9h.UV index
In South Hempstead, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 5 suggests these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
South Hempstead, NY
- Average high temperature in May: 63.1°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 May: 54.5°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 May
South Hempstead, NY
- Average pressure in May: 30.01"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 May
South Hempstead, NY
- Average wind speed in May: 9.5mph
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 May
South Hempstead, NY
- Average humidity in May: 77%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in May
South Hempstead, NY
- Average rainfall in May: 0.83"
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 May
South Hempstead, NY
- Average rainfall days in May: 11.7 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 May
South Hempstead, NY
- Average snowfall in May: 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 May
South Hempstead, NY
- Average snowfall days in May: 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 May /
Average sunshine in May
South Hempstead, NY
- Average daylight in May: 14h and 30min
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 May: 8h and 54min
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 May
South Hempstead, NY
- Average sunshine days in May: 17.4 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 May
South Hempstead, NY
- Average UV index in May: 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 May
South Hempstead, NY
- Average cloud cover in May: 42
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 May
South Hempstead, NY
- Average visibility in May: 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).
