May weather forecast
Raritan, NJ

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Weather in May

The last month of the spring, May, is an agreeable month in Raritan, New Jersey, with an average temperature fluctuating between 70.2°F (21.2°C) and 52.2°F (11.2°C).

Temperature

As Raritan enters May, the average high-temperature increases from the a refreshing 59.5°F (15.3°C) of April to an agreeable 70.2°F (21.2°C). During May, Raritan's temperature averages to a cool 52.2°F (11.2°C) at night.

Humidity

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

Rainfall

In Raritan, New Jersey, during May, the rain falls for 17 days and regularly aggregates up to 2.72" (69mm) of precipitation. Throughout the year, in Raritan, there are 157.9 rainfall days, and 28.19" (716mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Raritan. May is the last month it regularly snows in Raritan. During 0.1 snowfall days, in May, Raritan aggregates 0.24" (6mm) of snow. Throughout the year, in Raritan, there are 23.8 snowfall days, and 9.53" (242mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 28min.
On the first day of May in Raritan, 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 8:22 pm EDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 5 in May transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Raritan in May?

In May, in Raritan, the average high-temperature is 70.2°F (21.2°C), and the average low-temperature is 52.2°F (11.2°C).

What is the average humidity in May in Raritan?

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

How much does it rain in Raritan in May?

In May, in Raritan, New Jersey, the rain falls for 17 days. Throughout May, 2.72" (69mm) of precipitation is accumulated.

What is the last month it snows in Raritan?

May is the last month it regularly snows in Raritan, New Jersey. During 0.1 snowfall days, in May, Raritan aggregates 0.24" (6mm) of snow.

How many hours of daylight does Raritan have in May?

In Raritan, New Jersey, the average day length in May is 14h and 28min.

When are sunrise and sunset in May in Raritan?

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 8:22 pm EDT.

How long on average sun shines in May in Raritan?

In May, the average sunshine duration in Raritan, New Jersey, is 8.5h.

What is the UV index intensity in May in Raritan?

In Raritan, New Jersey, 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
Raritan, NJ

Average temperature in May - Raritan, NJ
  • Average high temperature in May: 70.2°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in May
Raritan, NJ

Average pressure in May - Raritan, 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
Raritan, NJ

Average wind speed in May - Raritan, NJ
  • Average wind speed in May: 6.7mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in May
Raritan, NJ

Average humidity in May - Raritan, NJ
  • Average humidity in May: 78%

The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (74%).

Average rainfall in May
Raritan, NJ

Average rainfall in May - Raritan, NJ
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in May
Raritan, NJ

Average rainfall days in May - Raritan, NJ
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (9 days).

Average snowfall in May
Raritan, NJ

Average snowfall in May - Raritan, NJ
  • Average snowfall in May: 0.24"

The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Raritan, NJ

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

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Raritan, NJ
  • Average daylight in May: 14h and 3min

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 3min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in May
Raritan, NJ

Average sunshine days in May - Raritan, NJ
  • Average sunshine days in May: 12 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in May
Raritan, NJ

Average UV index in May - Raritan, 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
Raritan, NJ

Average cloud cover in May - Raritan, NJ
  • Average cloud cover in May: 47

The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in May
Raritan, NJ

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

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

Raritan, New Jersey, USA

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