May weather forecastIslandia, NY
May
Weather in May
The last month of the spring, May, is an enjoyable month in Islandia, New York, with an average temperature ranging between max 61.2°F (16.2°C) and min 54.3°F (12.4°C).Temperature
May brings a slight rise in Islandia's average high-temperature, moving from a fresh 52.3°F (11.3°C) in April to an enjoyable 61.2°F (16.2°C). Throughout May, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 54.3°F (12.4°C).Humidity
The months with the highest humidity are May and June, with an average relative humidity of 78%.Rainfall
In May, the rain falls for 16.1 days. Throughout May, 2.91" (74mm) of precipitation is accumulated. Throughout the year, there are 155.3 rainfall days, and 34.84" (885mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, May, October and December. May is the first month it typically snows. Throughout May, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. In Islandia, during the entire year, snow falls for 14.7 days and aggregates up to 6.14" (156mm) of snow.Daylight
The average length of the day in May in Islandia is 14h and 29min.On the first day of May in Islandia, New York, sunrise is at 5:49 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 8:17 pm EDT.
Sunshine
In Islandia, the average sunshine in May is 8.9h.UV index
In Islandia, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in May translates into this advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Islandia, NY
- Average high temperature in May: 61.2°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in May: 54.3°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in May
Islandia, NY
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Islandia, NY
- Average wind speed in May: 10.1mph
The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).
Average humidity in May
Islandia, NY
- Average humidity in May: 78%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in May
Islandia, NY
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in May
Islandia, NY
- Average rainfall days in May: 16.1 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Islandia, NY
- Average snowfall in May: 0.16"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, June, July, August, September and November (0").
Average snowfall days in May
Islandia, NY
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Islandia, NY
- Average daylight in May: 14h 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 May: 8h and 54min
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
Islandia, NY
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in May
Islandia, 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
Islandia, 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
Islandia, 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).
