May weather forecast and climate
Commack, NY

The last month of the spring, May, is an enjoyable month in Commack, New York, with average temperature ranging between max 62.6°F (17°C) and min 54°F (12.2°C).

Temperature

In Commack, the average high-temperature rises, from a cool 53.1°F (11.7°C) in April, to an enjoyable 62.6°F (17°C). In Commack, New York, in May, the average low-temperature is 54°F (12.2°C).

Humidity

The most humid month in Commack is May, with an average relative humidity of 77%.

Rainfall

In Commack, during May, the rain falls for 16.4 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, in Commack, there are 155.9 rainfall days, and 35.94" (913mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Commack.

Daylight

In May, the average length of the day in Commack, New York, is 14.5h.

Sunshine

In May, the average sunshine is 8.9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in May in Commack?

The average high-temperature, in May, in Commack, is 62.6°F (17°C), while the average low-temperature is 54°F (12.2°C).

What is the most humid month in Commack?

May is the most humid month in Commack, with an average relative humidity of 77%.

What is the average humidity in May in Commack?

In May, the average relative humidity in Commack, New York, is 77%.

How many days does it rain in May in Commack?

In Commack, New York, in May, during 16.4 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

When it does not snow in Commack?

April through October are months without snowfall in Commack, New York.

How many hours of daylight does Commack have in May?

In Commack, the average length of the day in May is 14.5h.

How long on average sun shines in May in Commack?

In May, the average sunshine in Commack is 8.9h.

What is the UV index reading in May in Commack?

In Commack, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in May - Commack, NY
  • Average high temperature in May: 62.6°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°F

The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).

Average pressure in May - Commack, NY
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in May - Commack, NY
  • Average wind speed in May: 9.3mph

The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

Average humidity in May - Commack, 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 - Commack, NY
  • Average rainfall in May: 2.99"

The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is January (2.2").

Average rainfall days in May - Commack, NY
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in May - Commack, NY
  • Average snowfall in May: 0"

The month with the highest snowfall is March (1.85").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May - Commack, NY
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (4.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Commack, NY
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 8.9h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in May - Commack, NY
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (11.4 days).

Average UV index in May - Commack, NY
  • Average UV index in May: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March and December (UV index 2).

Average cloud cover in May - Commack, 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 28).

Average visibility in May - Commack, NY
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).