December weather forecastDover, PA
December
Weather in December
December, the first month of the winter in Dover, is still a cold month, with an average temperature fluctuating between 29.8°F (-1.2°C) and 42.1°F (5.6°C).Temperature
December's onset introduces a mild reduction in the average high-temperature, from a cool 50.9°F (10.5°C) in November to a wintry 42.1°F (5.6°C). Throughout December, Dover experiences a low-temperature average of 29.8°F (-1.2°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Dover, during December, the rain falls for 8.4 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, 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, during December, snow falls for 4 days and regularly aggregates up to 1.22" (31mm) of snow. Throughout the year, there are 20 snowfall days, and 7.56" (192mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min 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 4:52 pm EST.
Sunshine
In Dover, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Dover, PA
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- 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).
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).
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).
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).
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).
