May weather forecast
Plainsboro Center, NJ

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Weather in May

The last month of the spring, May, is an agreeable month in Plainsboro Center, New Jersey, with an average temperature fluctuating between 70.5°F (21.4°C) and 53.2°F (11.8°C).

Temperature

Plainsboro Center sees an increase in average high-temperatures during May, moving from a mild 60.4°F (15.8°C) in April to an agreeable 70.5°F (21.4°C). Throughout May, an average nighttime temperature of 53.2°F (11.8°C) is experienced in Plainsboro Center.

Humidity

In May, the average relative humidity is 78%.

Rainfall

In May, the rain falls for 12.6 days. Throughout May, 1.22" (31mm) of precipitation is accumulated. Throughout the year, there are 119.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Plainsboro Center aggregates 0.2" (5mm) of snow. In Plainsboro Center, during the entire year, snow falls for 16.4 days and aggregates up to 4.41" (112mm) of snow.

Daylight

In May, the average length of the day is 14h and 26min.
On the first day of May, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:21 pm EDT.

Sunshine

In Plainsboro Center, the average sunshine in May is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

In May, in Plainsboro Center, the average high-temperature is 70.5°F (21.4°C), and the average low-temperature is 53.2°F (11.8°C).

What is the average humidity in May?

In Plainsboro Center, the average relative humidity in May is 78%.

How much does it rain in May?

In Plainsboro Center, in May, it is raining for 12.6 days, with typically 1.22" (31mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Plainsboro Center aggregates 0.2" (5mm) of snow.

How many hours of daylight does Plainsboro Center have in May?

In Plainsboro Center, the average day length in May is 14h and 26min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:21 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.6h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
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
Plainsboro Center, NJ

Average temperature in May - Plainsboro Center, NJ
  • Average high temperature in May: 70.5°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in May: 53.2°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in May
Plainsboro Center, NJ

Average pressure in May - Plainsboro Center, 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
Plainsboro Center, NJ

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

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in May
Plainsboro Center, NJ

Average humidity in May - Plainsboro Center, NJ
  • Average humidity in May: 78%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in May
Plainsboro Center, NJ

Average rainfall in May - Plainsboro Center, NJ
  • Average rainfall in May: 1.22"

The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days in May
Plainsboro Center, NJ

Average rainfall days in May - Plainsboro Center, NJ
  • Average rainfall days in May: 12.6 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).

Average snowfall in May
Plainsboro Center, NJ

Average snowfall in May - Plainsboro Center, NJ
  • Average snowfall in May: 0.2"

The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Plainsboro Center, NJ

Average snowfall days in May - Plainsboro Center, NJ
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (4.6 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
Plainsboro Center, NJ

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

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 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in May
Plainsboro Center, NJ

Average sunshine days in May - Plainsboro Center, NJ
  • Average sunshine days in May: 15 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in May
Plainsboro Center, NJ

Average UV index in May - Plainsboro Center, NJ
  • 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, November and December (UV index 2).

Average cloud cover in May
Plainsboro Center, NJ

Average cloud cover in May - Plainsboro Center, 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 33).

Average visibility in May
Plainsboro Center, NJ

Average visibility in May - Plainsboro Center, 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).

Plainsboro Center, New Jersey, USA

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