May weather forecast
Monmouth Junction, NJ

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Weather in May

The last month of the spring, May, is a pleasant month in Monmouth Junction, New Jersey, with an average temperature ranging between min 53.2°F (11.8°C) and max 70.5°F (21.4°C).

Temperature

Monmouth Junction's May weather shows an increase in high-temperatures, moving from April's mild 60.4°F (15.8°C) to an agreeable 70.5°F (21.4°C). The nights of May anticipate an average low-temperature of 53.2°F (11.8°C).

Humidity

In Monmouth Junction, the average relative humidity in May is 78%.

Rainfall

In Monmouth Junction, in May, during 12.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 119.3 rainfall days, and 12.72" (323mm) 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, Monmouth Junction aggregates 0.2" (5mm) of snow. In Monmouth Junction, 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 the month, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:30 am and sunset at 8:21 pm EDT.

Sunshine

In May, the average sunshine 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 moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 5 in May translates into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

In May, the average high-temperature and low-temperature are 70.5°F (21.4°C) and 53.2°F (11.8°C) respectively.

What is the average humidity in May?

In Monmouth Junction, the average relative humidity in May is 78%.

How many days does it rain in May in Monmouth Junction?

In Monmouth Junction, 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, Monmouth Junction aggregates 0.2" (5mm) of snow.

How many hours of daylight does Monmouth Junction have in May?

The average day length in May is 14h and 26min.

What time are sunrise and sunset in May?

In May, on the first day of the month, 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.

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Monmouth Junction, NJ

Average temperature in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average pressure in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average wind speed in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average humidity in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average rainfall in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average rainfall days in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average snowfall in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average snowfall days in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average daylight in May / Average sunshine in May - Monmouth Junction, 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 18min).

  • 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
Monmouth Junction, NJ

Average sunshine days in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average UV index in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average cloud cover in May - Monmouth Junction, 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
Monmouth Junction, NJ

Average visibility in May - Monmouth Junction, 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).

Monmouth Junction, New Jersey, USA

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