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
December weather is marked by a drop in the average high-temperature, falling from a chilly 49.1°F (9.5°C) in November to an icy 39.9°F (4.4°C). During December, McDonald's temperature falls to a steady low-temperature average of 28.4°F (-2°C).Humidity
The average relative humidity in December in McDonald, Pennsylvania, is 84%.Rainfall
In McDonald, in December, it is raining for 11.5 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 170.6 rainfall days, and 25.79" (655mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 11.8 days. Throughout December, 2.6" (66mm) of snow is accumulated. In McDonald, during the entire year, snow falls for 55.6 days and aggregates up to 13.62" (346mm) of snow.Daylight
December has the shortest days of the year in McDonald, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of December, in McDonald, sunrise is at 7:43 am and sunset at 5:04 pm EST.
Sunshine
In McDonald, the average sunshine in December is 3.5h.UV index
The months with the lowest UV index in McDonald are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
Is December cold in McDonald?
What is the average humidity in December in McDonald?
How much does it rain in McDonald in December?
How much does it snow in McDonald in December?
What is the month with the shortest days in McDonald?
How many hours of daylight does McDonald have in December?
When is the sunrise / sunset in December in McDonald?
How long on average sun shines in December in McDonald?
When is the lowest UV index in McDonald?
What is the UV index intensity in December in McDonald?
Average temperature in December
McDonald, PA
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
McDonald, 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
McDonald, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
McDonald, PA
- Average humidity in December: 84%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).
Average rainfall in December
McDonald, PA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
McDonald, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
McDonald, PA
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
McDonald, PA
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
McDonald, 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 18min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
McDonald, PA
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in December
McDonald, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and 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
McDonald, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
McDonald, PA
- Average visibility in December: 5mi
The months with the highest visibility are April, August and November (6mi).
The month with the lowest visibility is February (4mi).
McDonald, Pennsylvania, USA
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