May weather forecast
Clayton, NJ

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Weather in May

The last month of the spring, May, is a pleasant month in Clayton, New Jersey, with temperature in the range of an average low of 55.2°F (12.9°C) and an average high of 71.8°F (22.1°C).

Temperature

May brings an increase in the average high-temperature, progressing from a comfortable 61.7°F (16.5°C) in April to a pleasant 71.8°F (22.1°C). In May, Clayton experiences an average nighttime temperature of 55.2°F (12.9°C).

Humidity

In May, the average relative humidity is 77%.

Rainfall

In Clayton, in May, during 16.5 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 154.9 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Clayton aggregates 0.16" (4mm) of snow. In Clayton, during the entire year, snow falls for 17.8 days and aggregates up to 10.28" (261mm) of snow.

Daylight

In Clayton, New Jersey, the average length of the day in May is 14h and 23min.
On the first day of May, sunrise is at 5:59 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:21 pm EDT.

Sunshine

In Clayton, the average sunshine in May is 8.8h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Clayton in May?

The average high-temperature and low-temperature in Clayton during May are 71.8°F (22.1°C) and 55.2°F (12.9°C) respectively.

What is the average humidity in May?

In May, the average relative humidity is 77%.

How many days does it rain in May?

In Clayton, in May, it is raining for 16.5 days, with typically 2.52" (64mm) of accumulated precipitation.

What is the last month it snows in Clayton?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Clayton aggregates 0.16" (4mm) of snow.

How many hours of daylight does Clayton have in May?

The average day length in May is 14h and 23min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:21 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.8h.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

How high is the UV index in May?

The average daily maximum UV index in May in Clayton is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Clayton, NJ

Average temperature in May - Clayton, NJ
  • Average high temperature in May: 71.8°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in May: 55.2°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in May
Clayton, NJ

Average pressure in May - Clayton, NJ
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Clayton, NJ

Average wind speed in May - Clayton, NJ
  • Average wind speed in May: 7.1mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in May
Clayton, NJ

Average humidity in May - Clayton, NJ
  • Average humidity in May: 77%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).

Average rainfall in May
Clayton, NJ

Average rainfall in May - Clayton, NJ
  • Average rainfall in May: 2.52"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in May
Clayton, NJ

Average rainfall days in May - Clayton, NJ
  • Average rainfall days in May: 16.5 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in May
Clayton, NJ

Average snowfall in May - Clayton, NJ
  • Average snowfall in May: 0.16"

The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Clayton, NJ

Average snowfall days in May - Clayton, NJ
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Clayton, NJ

Average daylight in May / Average sunshine in May - Clayton, NJ
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • 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 54min).

Average sunshine days in May
Clayton, NJ

Average sunshine days in May - Clayton, NJ
  • Average sunshine days in May: 12.2 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in May
Clayton, NJ

Average UV index in May - Clayton, NJ
  • Average UV index in May: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Clayton, NJ

Average cloud cover in May - Clayton, NJ
  • Average cloud cover in May: 45

The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in May
Clayton, NJ

Average visibility in May - Clayton, NJ
  • 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).

Clayton, New Jersey, USA

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