December weather forecast
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees

Weather in December

The first month of the winter, December, is also a frosty month in Dover, Delaware, with an average temperature ranging between min 35.6°F (2°C) and max 46.2°F (7.9°C).

Temperature

In Dover, the average high-temperature in December slightly decreases from a fresh 54.3°F (12.4°C) in November to a frosty 46.2°F (7.9°C). In December, in Dover, the average low-temperature is 35.6°F (2°C).

Humidity

In Dover, Delaware, the average relative humidity in December is 76%.

Rainfall

In Dover, it is raining for 10.5 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, in Dover, there are 152.3 rainfall days, and 26.3" (668mm) of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall in Dover. December is the first month it typically snows in Dover. Throughout December, in the average 1.7 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 10.1 snowfall days, and 4.61" (117mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Dover, with an average of 9h and 28min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:48 pm EST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index in Dover, Delaware, are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transform into the following instructions:
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 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in December in Dover?

In December, in Dover, the average high-temperature is 46.2°F (7.9°C), and the average low-temperature is 35.6°F (2°C). in August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in December in Dover?

In Dover, Delaware, the average relative humidity in December is 76%.

How many days does it rain in December in Dover?

In Dover, in December, during 10.5 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When does it start snowing in Dover?

December is the first month it typically snows in Dover, Delaware. Throughout December, in the average 1.7 snowfall days, it receives 0.51" (13mm) of snow.

What is the month with the shortest days in Dover?

With an average of 9h and 28min of daylight, December has the shortest days of the year in Dover.

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

The average day length in December in Dover is 9h and 28min.

What time are sunrise and sunset in December in Dover?

On the first day of December in Dover, Delaware, sunrise is at 7:02 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:48 pm EST.

How long on average sun shines in December in Dover?

The average sunshine duration in December in Dover, Delaware, is 5.2h.

When is the lowest UV index in Dover?

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

How high is the UV index in December in Dover?

In December, the average daily maximum UV index in Dover is 2. A UV Index of 2, and less, symbolizes a low health threat 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, DE

Average temperature in December - Dover, DE
  • Average high temperature in December: 46.2°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in December: 35.6°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

[Resources]

Average pressure in December
Dover, DE

Average pressure in December - Dover, DE
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in December
Dover, DE

Average wind speed in December - Dover, DE
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

[Resources]

Average humidity in December
Dover, DE

Average humidity in December - Dover, DE
  • Average humidity in December: 76%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

[Resources]

Average rainfall in December
Dover, DE

Average rainfall in December - Dover, DE
  • Average rainfall in December: 2.09"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").

[Resources]

Average rainfall days in December
Dover, DE

Average rainfall days in December - Dover, DE
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).

[Resources]

Average snowfall in December
Dover, DE

Average snowfall in December - Dover, DE
  • Average snowfall in December: 0.51"

The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

[Resources]

Average snowfall days in December
Dover, DE

Average snowfall days in December - Dover, DE
  • Average snowfall days in December: 1.7 days

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Dover, DE
  • Average daylight in December: 9h and 28min

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

  • Average sunshine in December: 5h and 12min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

[Resources]

Average sunshine days in December
Dover, DE

Average sunshine days in December - Dover, DE
  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).

[Resources]

Average UV index in December
Dover, DE

Average UV index in December - Dover, DE
  • 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 and December (UV index 2).

[Resources]

Average cloud cover in December
Dover, DE

Average cloud cover in December - Dover, DE
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).

[Resources]

Average visibility in December
Dover, DE

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location