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
Welcoming December, Dunbar observes a shift in the average high-temperature, falling from November's chilly 49.3°F (9.6°C) to a wintry 39.7°F (4.3°C). The average nighttime temperature lowers to a freezing cold 27.9°F (-2.3°C) throughout December.Humidity
In Dunbar, the average relative humidity in December is 84%.Rainfall
In December, the rain falls for 9.4 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Dunbar, during the entire year, the rain falls for 150.7 days and collects up to 16.65" (423mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Dunbar, in December, snow falls for 11.5 days, with typically accumulated 3.74" (95mm) of snow. In Dunbar, during the entire year, snow falls for 58.2 days and aggregates up to 17.44" (443mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Dunbar, Pennsylvania, sunrise is at 7:21 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:03 pm EST.
Sunshine
In December, the average sunshine is 3.5h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Dunbar have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Dunbar have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Dunbar, PA
- Average high temperature in December: 39.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Dunbar, 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 (29.95"Hg).
Average wind speed in December
Dunbar, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Dunbar, PA
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in December
Dunbar, PA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (1.97").
The driest months (with the least rainfall) are September and November (0.91").
Average rainfall days in December
Dunbar, PA
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in December
Dunbar, PA
- Average snowfall in December: 3.74"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Dunbar, PA
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Dunbar, 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: 3h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Dunbar, PA
- Average sunshine days in December: 12.1 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is January (8.6 days).
Average UV index in December
Dunbar, PA
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Dunbar, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Dunbar, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).
Dunbar, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location