May weather forecast
Glassboro, NJ

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Weather in May

May, the last month of the spring in Glassboro, is an agreeable month, with an average temperature ranging between min 55.2°F (12.9°C) and max 71.8°F (22.1°C).

Temperature

The arrival of May sees a shift in the average high-temperature, moving from a comfortable 61.7°F (16.5°C) in April to a pleasant 71.8°F (22.1°C). In the month of May, the average low-temperature usually rests at a fresh 55.2°F (12.9°C).

Humidity

The average relative humidity in May in Glassboro is 77%.

Rainfall

In Glassboro, during May, the rain falls for 16.5 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 154.9 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Glassboro are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Glassboro aggregates 0.16" (4mm) of snow. In Glassboro, during the entire year, snow falls for 17.8 days and aggregates up to 10.28" (261mm) of snow.

Daylight

In Glassboro, New Jersey, the average length of the day in May is 14h and 23min.
On the first day of the month, sunrise is at 5:59 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:21 pm EDT.

Sunshine

In May, the average sunshine is 8.8h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Glassboro. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 6 in May suggests the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Stay sun-safe with clothing that is both closely woven and worn loosely. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Glassboro?

An average high-temperature, in May, in Glassboro, is 71.8°F (22.1°C) and the average low-temperature is 55.2°F (12.9°C).

What is the average humidity in May in Glassboro?

The average relative humidity in May in Glassboro is 77%.

How much does it rain in Glassboro in May?

In Glassboro, in May, it is raining for 16.5 days, with typically 2.52" (64mm) of accumulated precipitation.

What is the last month it snows in Glassboro?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Glassboro aggregates 0.16" (4mm) of snow.

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

In May, the average day length is 14h and 23min.

When are sunrise and sunset in May in Glassboro?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:21 pm EDT.

How many hours of sunshine does Glassboro have in May?

In Glassboro, New Jersey, the average sunshine duration in May is 8.8h.

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

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

What is the UV index intensity in May in Glassboro?

The average daily maximum UV index in May in Glassboro, New Jersey, is 6. A UV Index reading of 6 to 7 represents a high 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
Glassboro, NJ

Average temperature in May - Glassboro, NJ
  • Average high temperature in May: 71.8°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in May: 55.2°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in May
Glassboro, NJ

Average pressure in May - Glassboro, NJ
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Glassboro, NJ

Average wind speed in May - Glassboro, NJ
  • Average wind speed in May: 7.1mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in May
Glassboro, NJ

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

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).

Average rainfall in May
Glassboro, NJ

Average rainfall in May - Glassboro, NJ
  • Average rainfall in May: 2.52"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in May
Glassboro, NJ

Average rainfall days in May - Glassboro, NJ
  • Average rainfall days in May: 16.5 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in May
Glassboro, NJ

Average snowfall in May - Glassboro, NJ
  • Average snowfall in May: 0.16"

The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Glassboro, NJ

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

The month with the highest number of snowfall days is January (5.5 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
Glassboro, NJ

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in May
Glassboro, NJ

Average sunshine days in May - Glassboro, NJ
  • Average sunshine days in May: 12.2 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in May
Glassboro, NJ

Average UV index in May - Glassboro, 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, November and December (UV index 2).

Average cloud cover in May
Glassboro, NJ

Average cloud cover in May - Glassboro, NJ
  • Average cloud cover in May: 45

The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in May
Glassboro, NJ

Average visibility in May - Glassboro, NJ
  • Average visibility in May: 6mi

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

Glassboro, New Jersey, USA

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