May weather forecast
Mountain Lakes, NJ

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Weather in May

The last month of the spring, May, is an agreeable month in Mountain Lakes, New Jersey, with an average temperature fluctuating between 68.9°F (20.5°C) and 50.7°F (10.4°C).

Temperature

The transition to May introduces an increase in the average high-temperature, shifting from a moderate 58.3°F (14.6°C) in April to an agreeable 68.9°F (20.5°C). Throughout May, Mountain Lakes witnesses a nighttime temperature average of 50.7°F (10.4°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

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

Snowfall

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

Daylight

In May, the average length of the day in Mountain Lakes 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, 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 in Mountain Lakes, New Jersey, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 5 in May leads to these guidelines:
Be vigilant - Preventing sunburn is recommended. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. 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 average May temperature in Mountain Lakes?

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

What is the average humidity in May in Mountain Lakes?

The average relative humidity in May is 78%.

How many days does it rain in May in Mountain Lakes?

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

What is the last month it snows in Mountain Lakes?

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

What is the average length of the day in May in Mountain Lakes?

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

When is the sunrise / sunset in May in Mountain Lakes?

On the first day of May in Mountain Lakes, New Jersey, 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 many hours of sunshine does Mountain Lakes have in May?

The average sunshine duration in May in Mountain Lakes is 8.2h.

What is the UV index reading in May in Mountain Lakes?

The average daily maximum UV index in May in Mountain Lakes, New Jersey, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Mountain Lakes, NJ

Average temperature in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average pressure in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average wind speed in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average humidity in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average rainfall in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average rainfall days in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average snowfall in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average snowfall days in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average daylight in May / Average sunshine in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average sunshine days in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average UV index in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average cloud cover in May - Mountain Lakes, 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
Mountain Lakes, NJ

Average visibility in May - Mountain Lakes, 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).

Mountain Lakes, New Jersey, USA

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