December weather forecast
Dover, PA

Weather in December

The first month of the winter, December, is still a cold month in Dover, Pennsylvania, with an average temperature varying between 29.8°F (-1.2°C) and 42.1°F (5.6°C).

Temperature

In December, the average high-temperature slightly decreases from a cool 50.9°F (10.5°C) in November to a cold 42.1°F (5.6°C). In December, in Dover, the average low-temperature is 29.8°F (-1.2°C).

Humidity

The average relative humidity in December is 79%.

Rainfall

In Dover, Pennsylvania, in December, it is raining for 8.4 days, with typically 1.22" (31mm) of accumulated precipitation. Throughout the year, in Dover, there are 133.5 rainfall days, and 16.89" (429mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Dover, in December, snow falls for 4 days, with typically accumulated 1.22" (31mm) of snow. In Dover, during the entire year, snow falls for 20 days and aggregates up to 7.56" (192mm) of snow.

Daylight

The month with the shortest days in Dover is December, with an average of 9h and 23min of daylight.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:51 pm EST.

Sunshine

In Dover, the average sunshine in December is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Dover. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Dover?

In December, the average relative humidity is 79%.

How much does it rain in Dover in December?

In Dover, in December, it is raining for 8.4 days, with typically 1.22" (31mm) of accumulated precipitation.

How much does it snow in Dover in December?

In Dover, Pennsylvania, in December, snow falls for 4 days, with typically accumulated 1.22" (31mm) of snow.

What is the month with the shortest days in Dover?

The month with the shortest days in Dover is December, with an average of 9h and 23min of daylight.

How many hours of daylight does Dover have in December?

In December, the average day length in Dover, Pennsylvania, is 9h and 23min.

When are sunrise and sunset in December in Dover?

On the first day of December in Dover, sunrise is at 7:10 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:51 pm EST.

How long on average sun shines in December in Dover?

In Dover, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Dover?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Dover, Pennsylvania.

What is the UV index reading in December in Dover?

The average daily maximum UV index in December in Dover is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Dover, PA

Average temperature in December - Dover, PA
  • Average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in December: 29.8°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure in December
Dover, PA

Average pressure in December - Dover, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Dover, PA

Average wind speed in December - Dover, PA
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in December
Dover, PA

Average humidity in December - Dover, PA
  • Average humidity in December: 79%

The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in December
Dover, PA

Average rainfall in December - Dover, PA
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (1.02").

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Average rainfall days in December
Dover, PA

Average rainfall days in December - Dover, PA
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in December
Dover, PA

Average snowfall in December - Dover, PA
  • Average snowfall in December: 1.22"

The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Dover, PA

Average snowfall days in December - Dover, PA
  • Average snowfall days in December: 4 days

The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Dover, PA

Average daylight in December / Average sunshine in December - Dover, PA
  • Average daylight in December: 9h and 23min

The month with the longest days is June (Average daylight: 14h and 58min).
The month with the shortest days is December (Average daylight: 9h and 23min).

  • Average sunshine in December: 4h and 54min

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

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Average sunshine days in December
Dover, PA

Average sunshine days in December - Dover, PA
  • Average sunshine days in December: 19.8 days

The month with the most sunshine days is November (20.8 days).
The months with the least sunshine days are May and July (12.7 days).

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Average UV index in December
Dover, PA

Average UV index in December - Dover, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Dover, PA

Average cloud cover in December - Dover, PA
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Dover, PA

Average visibility in December - Dover, PA
  • Average visibility in December: 6mi

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

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