May weather forecastTrenton, NJ
May
Weather in May
As May rolls in, so does a marked rise in temperatures. It is the transition phase between spring and summer that brings unmistakably warmer weather. The humidity increases to 77%, signifying the shift towards muggy conditions. Interestingly, May records a peak rainfall of 2.91in. However, the charm of Trenton's natural parks and beautiful landscapes is heightened under the abundant 14.4 hours of daylight.Temperature
May's onset witnesses a shift in the average high-temperature, moving from a moderate 60.6°F (15.9°C) in April to an agreeable 70.9°F (21.6°C). May in Trenton witnesses an average low-temperature hovering around a fresh 53.6°F (12°C).Humidity
In Trenton, the average relative humidity in May is 77%.Rainfall
In Trenton, in May, it is raining for 17.2 days, with typically 2.91" (74mm) of accumulated precipitation. In Trenton, during the entire year, the rain falls for 156.8 days and collects up to 31.81" (808mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Trenton aggregates 0.28" (7mm) of snow. In Trenton, during the entire year, snow falls for 16.6 days and aggregates up to 8.86" (225mm) of snow.Daylight
In May, the average length of the day is 14h and 26min.On the first day of the month, sunrise is at 5:57 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:31 am and sunset at 8:22 pm EDT.
Sunshine
In Trenton, the average sunshine in May is 8.7h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, the maximum UV index of 6 transforms into these recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in May
Trenton, NJ
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
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).
Average humidity in May
Trenton, NJ
- Average humidity in May: 77%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
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").
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).
Average snowfall in May
Trenton, NJ
- Average snowfall in May: 0.28"
The month with the highest snowfall is March (2.72").
The months with the least snowfall are June, July, August and September (0").
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).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Trenton, NJ
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
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).
Average UV index in May
Trenton, 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, March, November and December (UV index 2).
Average cloud cover in May
Trenton, NJ
- Average cloud cover in May: 46
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in May
Trenton, NJ
- Average visibility in May: 5mi
The 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).
