Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December suggests a slight decrease in the average high-temperature, moving from a cool 50.9°F (10.5°C) in November to a cold 42.1°F (5.6°C). Dover observes an average nighttime temperature of 29.8°F (-1.2°C) during December.Humidity
In December, the average relative humidity is 79%.Rainfall
In Dover, in December, during 8.4 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 133.5 rainfall days, and 16.89" (429mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. 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 December, 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 4:52 pm EST.
Sunshine
The average sunshine in December in Dover 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. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To avoid the Sun's strongest rays, limit exposure around the mid-day period. 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. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold does it get in Dover in December?
What is the average humidity in December in Dover?
How much does it rain in Dover in December?
How much does it snow in Dover in December?
What is the month with the shortest days in Dover?
What is the average length of the day in December in Dover?
When are sunrise and sunset in December in Dover?
How long on average sun shines in December in Dover?
What is the month with the lowest UV index in Dover?
What is the UV index reading in December in Dover?
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 2min
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 5min
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).
Dover, Pennsylvania, USA
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