December weather forecastMellingertown, PA
December
Weather in December
The first month of the winter, December, is also a wintry month in Mellingertown, Pennsylvania, with an average temperature ranging between max 39.2°F (4°C) and min 27.7°F (-2.4°C).Temperature
December brings a minor decrease, with the average high-temperature reducing from a frosty 48.9°F (9.4°C) in November to a wintry 39.2°F (4°C). In Mellingertown, the average low-temperature during the month of December is a subzero cold 27.7°F (-2.4°C).Humidity
In Mellingertown, Pennsylvania, the average relative humidity in December is 84%.Rainfall
In December, in Mellingertown, Pennsylvania, the rain falls for 13.1 days. Throughout December, 3.03" (77mm) of precipitation is accumulated. In Mellingertown, Pennsylvania, during the entire year, the rain falls for 185.4 days and collects up to 34.02" (864mm) of precipitation.Snowfall
Months with snowfall in Mellingertown are January through May, October through December. In December, in Mellingertown, Pennsylvania, it is snowing for 12.8 days. Throughout December, 6.1" (155mm) of snow is accumulated. In Mellingertown, during the entire year, snow falls for 63.2 days and aggregates up to 29.02" (737mm) 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 Mellingertown, sunrise is at 7:21 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:02 pm EST.
Sunshine
In Mellingertown, the average sunshine in December is 3.6h.UV index
The months with the lowest UV index in Mellingertown are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mellingertown, PA
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Mellingertown, 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
Mellingertown, PA
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Mellingertown, 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 April, July and August (77%).
Average rainfall in December
Mellingertown, PA
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in December
Mellingertown, PA
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is May (22 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in December
Mellingertown, PA
- Average snowfall in December: 6.1"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mellingertown, PA
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mellingertown, 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: 3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Mellingertown, PA
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in December
Mellingertown, PA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Mellingertown, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Mellingertown, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
