December weather forecastSykesville, PA
December
Weather in December
The first month of the winter, December, is still a cold month in Sykesville, Pennsylvania, with an average temperature fluctuating between 25.5°F (-3.6°C) and 36.1°F (2.3°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, from a frosty 45.7°F (7.6°C) to a wintry 36.1°F (2.3°C). In December, the average low-temperature is a subzero cold 25.5°F (-3.6°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Sykesville, in December, during 12.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, there are 177 rainfall days, and 34.29" (871mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Sykesville, in December, during 16.5 snowfall days, 7.44" (189mm) of snow is typically accumulated. Throughout the year, there are 79.7 snowfall days, and 36.38" (924mm) of snow is accumulated.Daylight
The month with the shortest days in Sykesville is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:57 pm EST.
Sunshine
The average sunshine in December is 2.8h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sykesville, PA
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Sykesville, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Sykesville, PA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Sykesville, PA
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in December
Sykesville, PA
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in December
Sykesville, PA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in December
Sykesville, PA
- Average snowfall in December: 7.44"
The month with the highest snowfall is January (9.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sykesville, PA
- Average snowfall days in December: 16.5 days
The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sykesville, PA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 2h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Sykesville, PA
- Average sunshine days in December: 7.9 days
The month with the most sunshine days is September (13.3 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in December
Sykesville, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Sykesville, PA
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in December
Sykesville, PA
- Average visibility in December: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February and December (4mi).
