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

What is the temperature in December in Dover?

The average high-temperature, in December, in Dover, Delaware, is 46.4°F (8°C), while the average low-temperature is 28.4°F (-2°C).
Average temperature in December - Dover, DE
  • Average high temperature in December: 8°C

The warmest month (with the highest average high temperature) is July (31°C).
The month with the lowest average high temperature is January (5°C).

  • Average low temperature in December: -2°C

The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (-4°C).

Average rainfall in December - Dover, DE
  • Average rainfall in December: 89mm

The wettest month (with the highest rainfall) is August (110mm).
The driest month (with the lowest rainfall) is February (76mm).

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).

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