May weather forecast and climate
Trenton, NJ

A full aerial view of Trenton, New Jersey, with the George Washington statue
A full aerial view of Trenton, New Jersey, with the George Washington statue

Weather in May

May, the last month of the spring, in Trenton, is a pleasant month, with average temperature ranging between max 70.9°F (21.6°C) and min 53.6°F (12°C).

Temperature

In May, the average high-temperature rises, from a moderate 60.6°F (15.9°C) in April, to an agreeable 70.9°F (21.6°C). The average low-temperature, is 53.6°F (12°C).

Humidity

In Trenton, the average relative humidity in May is 77%.

Rainfall

In May, in Trenton, New Jersey, the rain falls for 17.2 days. Throughout May, 2.91" (74mm) of precipitation is accumulated. In Trenton, during the entire year, the rain falls for 156.8 days and collects up to 31.81" (808mm) of precipitation.

Snowfall

Months with snowfall in Trenton are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, Trenton aggregates 0.28" (7mm) of snow. Throughout the year, there are 16.6 snowfall days, and 8.86" (225mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14.4h.

Sunshine

In Trenton, the average sunshine is 8.7h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in May in Trenton?

In Trenton, New Jersey, in May, the average high-temperature is 70.9°F (21.6°C), and the average low-temperature is 53.6°F (12°C).

What is the average humidity in May in Trenton?

The average relative humidity in May is 77%.

How much does it rain in Trenton in May?

In Trenton, New Jersey, during May, the rain falls for 17.2 days and regularly aggregates up to 2.91" (74mm) of precipitation.

What is the last month it snows in Trenton?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Trenton aggregates 0.28" (7mm) of snow.

What is the average length of the day in May in Trenton?

In Trenton, New Jersey, the average length of the day in May is 14.4h.

How many hours of sunshine does Trenton have in May?

The average sunshine in May in Trenton, New Jersey, is 8.7h.

What are the months with the highest UV index in Trenton?

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

What is the UV index intensity in May in Trenton?

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.

Average temperature in May
Trenton, NJ

Average temperature in May - Trenton, NJ
  • Average high temperature in May: 70.9°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in May: 53.6°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

[Resources]

Average pressure in May
Trenton, NJ

Average pressure in May - Trenton, NJ
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

[Resources]

Average wind speed in May
Trenton, NJ

Average wind speed in May - Trenton, NJ
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

[Resources]

Average humidity in May
Trenton, NJ

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

Months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall in May
Trenton, NJ

Average rainfall in May - Trenton, NJ
  • Average rainfall in May: 2.91"

The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is January (1.85").

[Resources]

Average rainfall days in May
Trenton, NJ

Average rainfall days in May - Trenton, NJ
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (7.9 days).

[Resources]

Average snowfall in May
Trenton, NJ

Average snowfall in May - Trenton, NJ
  • Average snowfall in May: 0.28"

The month with the highest snowfall is March (2.72").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in May
Trenton, NJ

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

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

[Resources]

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

Average daylight in May / Average sunshine in May - Trenton, NJ
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 8.7h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

[Resources]

Average sunshine days in May
Trenton, NJ

Average sunshine days in May - Trenton, NJ
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.3 days).

[Resources]

Average UV index in May
Trenton, NJ

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

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

[Resources]

Average cloud cover in May
Trenton, NJ

Average cloud cover in May - Trenton, NJ
  • Average cloud cover in May: 46

Months with the most cloud cover are February, March and December (Cloud cover 47).
Months with the least cloud cover are July and August (Cloud cover 32).

[Resources]

Average visibility in May
Trenton, NJ

Average visibility in May - Trenton, NJ
  • Average visibility in May: 5mi

Months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

[Resources]