May weather forecast
Denville, NJ

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Weather in May

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

Temperature

The transition to May introduces an increase in the average high-temperature, shifting from a mild 58.3°F (14.6°C) in April to an agreeable 68.9°F (20.5°C). May in Denville, New Jersey, is noted for a mean low-temperature of 50.7°F (10.4°C).

Humidity

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

Rainfall

In Denville, in May, it is raining for 17.8 days, with typically 3.35" (85mm) of accumulated precipitation. Throughout the year, there are 161.2 rainfall days, and 33.74" (857mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in May in Denville 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 8:23 pm EDT.

Sunshine

The average sunshine in May is 8.2h.

UV index

The average daily maximum UV index in May in Denville, New Jersey, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 5 in May suggests the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the average May temperature in Denville?

The average high-temperature and low-temperature in Denville during May are 68.9°F (20.5°C) and 50.7°F (10.4°C) respectively.

What is the average humidity in May in Denville?

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

How many days does it rain in May in Denville?

In May, in Denville, New Jersey, the rain falls for 17.8 days. Throughout May, 3.35" (85mm) of precipitation is accumulated.

What is the last month it snows in Denville?

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

How many hours of daylight does Denville have in May?

In May, the average day length in Denville, New Jersey, is 14h and 29min.

When are sunrise and sunset in May in Denville?

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 8:23 pm EDT.

How many hours of sunshine does Denville have in May?

In May, the average sunshine duration is 8.2h.

How high is the UV index in May in Denville?

In Denville, New Jersey, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Denville, NJ

Average temperature in May - Denville, 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).

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Average pressure in May
Denville, NJ

Average pressure in May - Denville, 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
Denville, NJ

Average wind speed in May - Denville, 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).

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Average humidity in May
Denville, NJ

Average humidity in May - Denville, 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%).

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Average rainfall in May
Denville, NJ

Average rainfall in May - Denville, 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").

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Average rainfall days in May
Denville, NJ

Average rainfall days in May - Denville, 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).

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Average snowfall in May
Denville, NJ

Average snowfall in May - Denville, 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").

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Average snowfall days in May
Denville, NJ

Average snowfall days in May - Denville, 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).

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

Average daylight in May / Average sunshine in May - Denville, 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).

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Average sunshine days in May
Denville, NJ

Average sunshine days in May - Denville, 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).

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Average UV index in May
Denville, NJ

Average UV index in May - Denville, 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
Denville, NJ

Average cloud cover in May - Denville, 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).

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Average visibility in May
Denville, NJ

Average visibility in May - Denville, 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).

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Denville, New Jersey, USA

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