May weather forecast
Islandia, NY

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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.
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Frequently asked questions

What is the temperature in May in Islandia?

The average high-temperature, in May, in Islandia, is 61.2°F (16.2°C), while the average low-temperature is 54.3°F (12.4°C).

What is the most humid month in Islandia?

The months with the highest humidity in Islandia, New York, are May and June, with an average relative humidity of 78%.

What is the average humidity in May in Islandia?

The average relative humidity in May in Islandia, New York, is 78%.

How much does it rain in Islandia in May?

In Islandia, New York, in May, during 16.1 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When does it start to snow in Islandia?

May is the first month it typically snows in Islandia. Throughout May, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow.

How many hours of daylight does Islandia have in May?

In May, the average day length in Islandia, New York, is 14h and 29min.

When is the sunrise / sunset in May in Islandia?

On the first day of May in Islandia, 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.

How long on average sun shines in May in Islandia?

The average sunshine duration in May in Islandia, New York, is 8.9h.

What is the UV index intensity in May in Islandia?

In Islandia, New York, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Islandia, NY

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).

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Average pressure in May
Islandia, NY

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).

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Average wind speed in May
Islandia, NY

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).

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Average humidity in May
Islandia, NY

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%).

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Average rainfall in May
Islandia, NY

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").

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Average rainfall days in May
Islandia, NY

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).

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Average snowfall in May
Islandia, NY

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").

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Average snowfall days in May
Islandia, NY

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).

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Average daylight in May /
Average sunshine in May
Islandia, NY

Average daylight in May / Average sunshine in May - Islandia, NY
  • Average daylight in May: 14h and 3min

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 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).

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Average sunshine days in May
Islandia, NY

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).

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Average UV index in May
Islandia, NY

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).

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Average cloud cover in May
Islandia, NY

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).

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Average visibility in May
Islandia, NY

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).

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Islandia, New York, USA

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