May weather forecast and climate
Dover, NJ

Weather in May

The last month of the spring, May, is a pleasant month in Dover, New Jersey, with average temperature varying between 50.5°F (10.3°C) and 68.5°F (20.3°C).

Temperature

In May, the average high-temperature rises, from a mild 57.9°F (14.4°C) in April, to a pleasant 68.5°F (20.3°C). The average low-temperature, in May, is 50.5°F (10.3°C).

Humidity

The average relative humidity in May is 79%.

Rainfall

In Dover, during May, the rain falls for 8.9 days and regularly aggregates up to 0.67" (17mm) of precipitation. Throughout the year, there are 81.9 rainfall days, and 6.69" (170mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Dover. 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

In Dover, the average length of the day in May is 14.5h.

Sunshine

In May, the average sunshine is 8.2h.

UV index

In Dover, New Jersey, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Dover?

The average relative humidity in May in Dover 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. During 0.2 snowfall days, in May, Dover aggregates 0.16" (4mm) of snow.

How many hours of daylight does Dover have in May?

In May, the average length of the day in Dover is 14.5h.

How long on average sun shines in May in Dover?

The average sunshine in May in Dover is 8.2h.

What is the UV index reading in May in Dover?

The average daily maximum UV index in May in Dover is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

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).

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Average pressure in May
Dover, NJ

Average pressure in May - Dover, NJ
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

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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).

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Average humidity in May
Dover, NJ

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

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

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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").

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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).

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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").
Months with the least snowfall are June, July, August and September (0").

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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).
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
Dover, NJ

Average daylight in May / Average sunshine in May - Dover, NJ
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 8.2h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.4h).

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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).

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Average UV index in May
Dover, NJ

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

Months with the highest UV index are June and July (UV index 6).
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
Dover, NJ

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

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

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Average visibility in May
Dover, NJ

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

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

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