Dover
Delaware, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees
The first month of the winter, December, is also a frosty month in Dover, Delaware, with average temperature fluctuating between 46.4°F (8°C) and 28.4°F (-2°C).

Temperature

In December, the average high-temperature drops, from a moderate 59°F (15°C) in November, to a chilly 46.4°F (8°C). In December, in Dover, the average low-temperature is 28.4°F (-2°C).

Rainfall

In Dover, during 10 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. In Dover, Delaware, during the entire year, the rain falls for 115 days and collects up to 43.5" (1105mm) of precipitation.

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year in Dover.

Sunshine

January and December, with an average of 5h of sunshine, are months with the least sunshine in Dover.

UV index

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Dover. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for 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.

What is the temperature in December in Dover?

In December, in Dover, the average high-temperature is 46.4°F (8°C), and the average low-temperature is 28.4°F (-2°C).

How many days does it rain in December in Dover?

In December, in Dover, the rain falls for 10 days. Throughout December, 3.5" (89mm) of precipitation is accumulated.

What is the month with the shortest days in Dover?

With an average of 9.5h of daylight, December has the shortest days of the year in Dover.

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

In Dover, the average length of the day in December is 9.5h.

What is the month with the least sunshine in Dover?

January and December, with an average of 5h of sunshine, are months with the least sunshine in Dover, Delaware.

How long on average sun shines in December in Dover?

The average sunshine in December in Dover, Delaware, is 5h.

What are the months with the lowest UV index in Dover?

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

What is the UV index intensity in December in Dover?

The average daily maximum UV index in December in Dover is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Dover, DE
  • Average high temperature in December: 46°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average rainfall in December - Dover, DE
  • Average rainfall in December: 3.5"

The wettest month (with the highest rainfall) is August (4.3").
The driest month (with the lowest rainfall) is February (3").

Average rainfall days in December - Dover, DE
  • Average rainfall days in December: 10 days

The month with the highest number of rainy days is July (11 days).
The month with the lowest number of rainy days is October (7 days).

Average daylight in December / Average sunshine in December - Dover, DE
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5h

Months with most sunshine are June and July (Average sunshine: 9h).
Months with least sunshine are January and December (Average sunshine: 5).

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

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).