May weather forecast
Dover, NJ

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Weather in May

May, the last month of the spring in Dover, is a pleasant month, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 50.5°F (10.3°C).

Temperature

May comes with an increase, with the average high-temperature moving from a mild 57.9°F (14.4°C) in April to an agreeable 68.5°F (20.3°C). An average temperature of 50.5°F (10.3°C) is recorded during the nights in May.

Humidity

In May, the average relative humidity in Dover, New Jersey, is 79%.

Rainfall

In May, in Dover, New Jersey, the rain falls for 8.9 days. Throughout May, 0.67" (17mm) of precipitation is accumulated. In Dover, during the entire year, the rain falls for 81.9 days and collects up to 6.69" (170mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Dover aggregates 0.16" (4mm) of snow. In Dover, during the entire year, snow falls for 18.1 days and aggregates up to 2.68" (68mm) of snow.

Daylight

The average length of the day in May in Dover is 14h and 29min.
On the first day of May in Dover, sunrise is at 5:55 am and sunset at 7:55 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

In Dover, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 5 during May translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Dover in May?

The average high-temperature, in May, in Dover, is 68.5°F (20.3°C), while the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in May in Dover?

In Dover, New Jersey, the average relative humidity in May is 79%.

How many days does it rain in May in Dover?

In Dover, New Jersey, in May, during 8.9 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

What is the last month it snows in Dover?

May is the last month it regularly snows in Dover. During 0.2 snowfall days, in May, Dover aggregates 0.16" (4mm) of snow.

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

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

When is the sunrise / sunset in May in Dover?

In May, on the first day of the month, sunrise is at 5:55 am and sunset at 7:55 pm. On the last day of the month, in Dover, sunrise is at 5:28 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Dover?

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

What is the UV index intensity in May in Dover?

In May, the average daily maximum UV index in Dover, New Jersey, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's 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
Dover, NJ

Average temperature in May - Dover, NJ
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in May
Dover, NJ

Average pressure in May - Dover, 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
Dover, NJ

Average wind speed in May - Dover, NJ
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in May
Dover, NJ

Average humidity in May - Dover, NJ
  • Average humidity in May: 79%

The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (75%).

Average rainfall in May
Dover, NJ

Average rainfall in May - Dover, NJ
  • Average rainfall in May: 0.67"

The wettest month (with the highest rainfall) is July (0.79").
The driest month (with the least rainfall) is September (0.16").

Average rainfall days in May
Dover, NJ

Average rainfall days in May - Dover, NJ
  • Average rainfall days in May: 8.9 days

The month with the highest number of rainy days is July (9.5 days).
The month with the least rainy days is February (4 days).

Average snowfall in May
Dover, NJ

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

The month with the highest snowfall is March (0.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Dover, NJ

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

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Dover, 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
Dover, NJ

Average sunshine days in May - Dover, NJ
  • Average sunshine days in May: 19 days

The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (18.3 days).

Average UV index in May
Dover, NJ

Average UV index in May - Dover, NJ
  • Average UV index in May: 5

The months with the highest UV index are June and July (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
Dover, NJ

Average cloud cover in May - Dover, NJ
  • Average cloud cover in May: 50

The months with the most cloud cover are February and March (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in May
Dover, NJ

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

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

Dover, New Jersey, USA

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