May weather forecast
Boonton, NJ

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Weather in May

May, the last month of the spring in Boonton, is a pleasant month, with an average temperature ranging between min 50.7°F (10.4°C) and max 68.9°F (20.5°C).

Temperature

As April gives way to May, the average high-temperature displays an increase, moving from a moderate 58.3°F (14.6°C) to an agreeable 68.9°F (20.5°C). The nights of May anticipate an average low-temperature of 50.7°F (10.4°C).

Humidity

The average relative humidity in May in Boonton is 78%.

Rainfall

In May, in Boonton, the rain falls for 17.8 days. Throughout May, 3.35" (85mm) of precipitation is accumulated. In Boonton, New Jersey, during the entire year, the rain falls for 161.2 days and collects up to 33.74" (857mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Boonton. During 0.2 snowfall days, in May, Boonton aggregates 0.31" (8mm) of snow. Throughout the year, there are 30.9 snowfall days, and 15.79" (401mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 29min.
On the first day of the month, sunrise is at 5:54 am and sunset at 7:54 pm. On the last day of May, in Boonton, sunrise is at 5:28 am and sunset at 8:22 pm EDT.

Sunshine

The average sunshine in May is 8.2h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 5 in May translates into the following recommendations:
Take precautions - Protection against sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Boonton?

In May, the average high-temperature and low-temperature are 68.9°F (20.5°C) and 50.7°F (10.4°C) respectively.

What is the average humidity in May in Boonton?

The average relative humidity in May is 78%.

How many days does it rain in May in Boonton?

In Boonton, New Jersey, in May, during 17.8 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

What is the last month it snows in Boonton?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Boonton aggregates 0.31" (8mm) of snow.

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

In May, the average day length in Boonton is 14h and 29min.

When are sunrise and sunset in May in Boonton?

In May, on the first day of the month, sunrise is at 5:54 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:22 pm EDT.

How long on average sun shines in May in Boonton?

In Boonton, New Jersey, the average sunshine duration in May is 8.2h.

What is the UV index reading in May in Boonton?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to 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
Boonton, NJ

Average temperature in May - Boonton, NJ
  • Average high temperature in May: 68.9°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in May: 50.7°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in May
Boonton, NJ

Average pressure in May - Boonton, 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
Boonton, NJ

Average wind speed in May - Boonton, NJ
  • Average wind speed in May: 6.4mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in May
Boonton, NJ

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

The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (74%).

Average rainfall in May
Boonton, NJ

Average rainfall in May - Boonton, NJ
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in May
Boonton, NJ

Average rainfall days in May - Boonton, NJ
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in May
Boonton, NJ

Average snowfall in May - Boonton, NJ
  • Average snowfall in May: 0.31"

The month with the highest snowfall is March (4.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Boonton, NJ

Average snowfall days in May - Boonton, NJ
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in May
Boonton, NJ

Average sunshine days in May - Boonton, NJ
  • Average sunshine days in May: 11.4 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is April (11.2 days).

Average UV index in May
Boonton, NJ

Average UV index in May - Boonton, 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
Boonton, NJ

Average cloud cover in May - Boonton, NJ
  • Average cloud cover in May: 49

The months with the most cloud cover are February, March and December (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 35).

Average visibility in May
Boonton, NJ

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

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

Boonton, New Jersey, USA

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