May weather forecast
Cedar Knolls, NJ

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Weather in May

May, the last month of the spring in Cedar Knolls, is a pleasant month, with an average temperature varying between 51.3°F (10.7°C) and 68.9°F (20.5°C).

Temperature

May's arrival coincides with a rise in the average high-temperature, moving from April's moderate 58.3°F (14.6°C) to a pleasant 68.9°F (20.5°C). In May, Cedar Knolls's temperature tends to fall to an average low of 51.3°F (10.7°C) during the night.

Humidity

The average relative humidity in May in Cedar Knolls is 77%.

Rainfall

In Cedar Knolls, New Jersey, in May, during 18.3 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. In Cedar Knolls, during the entire year, the rain falls for 157.9 days and collects up to 27.05" (687mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. May is the last month it regularly snows in Cedar Knolls. During 0.1 snowfall days, in May, Cedar Knolls aggregates 0.2" (5mm) of snow. In Cedar Knolls, during the entire year, snow falls for 24 days and aggregates up to 9.72" (247mm) of snow.

Daylight

The average length of the day in May is 14h and 29min.
On the first day of May, sunrise is at 5:55 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.

Sunshine

In May, the average sunshine in Cedar Knolls is 8.4h.

UV index

In Cedar Knolls, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In May, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What are the temperatures in Cedar Knolls in May?

In May, in Cedar Knolls, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 51.3°F (10.7°C).

What is the average humidity in May in Cedar Knolls?

In May, the average relative humidity in Cedar Knolls is 77%.

How much does it rain in Cedar Knolls in May?

In Cedar Knolls, during May, the rain falls for 18.3 days and regularly aggregates up to 2.83" (72mm) of precipitation.

What is the last month it snows in Cedar Knolls?

May is the last month it regularly snows in Cedar Knolls. During 0.1 snowfall days, in May, Cedar Knolls aggregates 0.2" (5mm) of snow.

What is the average length of the day in May in Cedar Knolls?

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

What time are sunrise and sunset in May in Cedar Knolls?

In May, on the first day of the month, sunrise is at 5:55 am and sunset at 7:54 pm. On the last day of the month, in Cedar Knolls, sunrise is at 5:28 am and sunset at 8:22 pm EDT.

How long on average sun shines in May in Cedar Knolls?

In Cedar Knolls, New Jersey, the average sunshine duration in May is 8.4h.

What is the UV index reading in May in Cedar Knolls?

In May, the average daily maximum UV index in Cedar Knolls, New Jersey, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Cedar Knolls, NJ

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

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in May
Cedar Knolls, NJ

Average pressure in May - Cedar Knolls, 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).

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Average wind speed in May
Cedar Knolls, NJ

Average wind speed in May - Cedar Knolls, NJ
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in May
Cedar Knolls, NJ

Average humidity in May - Cedar Knolls, NJ
  • Average humidity in May: 77%

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

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Average rainfall in May
Cedar Knolls, NJ

Average rainfall in May - Cedar Knolls, NJ
  • Average rainfall in May: 2.83"

The wettest month (with the highest rainfall) is July (3.19").
The driest months (with the least rainfall) are January, February and September (1.57").

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Average rainfall days in May
Cedar Knolls, NJ

Average rainfall days in May - Cedar Knolls, NJ
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in May
Cedar Knolls, NJ

Average snowfall in May - Cedar Knolls, NJ
  • Average snowfall in May: 0.2"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Cedar Knolls, NJ

Average snowfall days in May - Cedar Knolls, NJ
  • Average snowfall days in May: 0.1 days

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

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Average daylight in May /
Average sunshine in May
Cedar Knolls, NJ

Average daylight in May / Average sunshine in May - Cedar Knolls, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
Cedar Knolls, NJ

Average sunshine days in May - Cedar Knolls, NJ
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (10.9 days).

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Average UV index in May
Cedar Knolls, NJ

Average UV index in May - Cedar Knolls, 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).

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Average cloud cover in May
Cedar Knolls, NJ

Average cloud cover in May - Cedar Knolls, NJ
  • Average cloud cover in May: 48

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

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Average visibility in May
Cedar Knolls, NJ

Average visibility in May - Cedar Knolls, NJ
  • Average visibility in May: 5mi

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

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Cedar Knolls, New Jersey, USA

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