Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
An escalation in the average high-temperature is seen with the onset of May, moving from a fresh 54.7°F (12.6°C) in April to a refreshing 64.6°F (18.1°C). During May, the average low-temperature is recorded at a fresh 54.1°F (12.3°C).Humidity
With an average relative humidity of 77%, May is the most humid month.Rainfall
In South Valley Stream, New York, in May, during 14.3 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In South Valley Stream, during the entire year, the rain falls for 135.3 days and collects up to 18.62" (473mm) of precipitation.Snowfall
April through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 28min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:51 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:19 pm EDT.
Sunshine
In South Valley Stream, New York, the average sunshine in May is 8.9h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In May, a daily UV index of 5 turns into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
How many hours of daylight does South Valley Stream have in May?
When is the sunrise / sunset in May in South Valley Stream?
How many hours of sunshine does South Valley Stream have in May?
What is the UV index intensity in May?
Average temperature in May
South Valley Stream, NY
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in May
South Valley Stream, 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 Valley Stream, NY
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in May
South Valley Stream, 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 (72%).
Average rainfall in May
South Valley Stream, NY
- Average rainfall in May: 1.65"
The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
South Valley Stream, NY
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in May
South Valley Stream, NY
- Average snowfall in May: 0"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in May
South Valley Stream, NY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.6 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 Valley Stream, NY
- Average daylight in May: 14h 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 May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
South Valley Stream, NY
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in May
South Valley Stream, 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, November and December (UV index 2).
Average cloud cover in May
South Valley Stream, NY
- Average cloud cover in May: 42
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
South Valley Stream, 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).
South Valley Stream, New York, USA
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