December weather forecastMcClellandtown, PA
December
Weather in December
December, the first month of the winter in McClellandtown, is also an icy month, with an average temperature varying between 40.1°F (4.5°C) and 29.1°F (-1.6°C).Temperature
The onset of December brings a small change in high-temperatures, falling from a frosty 49.8°F (9.9°C) in November to a cold 40.1°F (4.5°C). An average temperature of 29.1°F (-1.6°C) marks the nights in December.Humidity
In December, the average relative humidity is 83%.Rainfall
In McClellandtown, during December, the rain falls for 9.1 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 143.4 rainfall days, and 13.19" (335mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In McClellandtown, Pennsylvania, during December, snow falls for 11.4 days and regularly aggregates up to 2.44" (62mm) of snow. Throughout the year, there are 56 snowfall days, and 11.54" (293mm) of snow is accumulated.Daylight
The month with the shortest days in McClellandtown is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 4:55 pm. On the last day of December, in McClellandtown, sunrise is at 7:40 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine is 3.8h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 1 in December transforms into the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
McClellandtown, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
McClellandtown, 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
McClellandtown, PA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
McClellandtown, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in December
McClellandtown, PA
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
McClellandtown, PA
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in December
McClellandtown, PA
- Average snowfall in December: 2.44"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
McClellandtown, PA
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
McClellandtown, 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 48min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
McClellandtown, PA
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is January (9.1 days).
Average UV index in December
McClellandtown, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
McClellandtown, PA
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
McClellandtown, PA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
