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 brings a decrease in the average high-temperature, shifting from a chilly 49.6°F (9.8°C) in November to a cold 40.1°F (4.5°C). In December, the average low-temperature in Monessen records at a subzero cold 28.8°F (-1.8°C) during the nights.Humidity
In Monessen, Pennsylvania, the average relative humidity in December is 83%.Rainfall
In Monessen, during December, the rain falls for 14 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, there are 191.3 rainfall days, and 35.24" (895mm) of precipitation is accumulated.Snowfall
Months with snowfall in Monessen, Pennsylvania, are January through May, October through December. In Monessen, Pennsylvania, during December, snow falls for 12.6 days and regularly aggregates up to 4.88" (124mm) of snow. In Monessen, during the entire year, snow falls for 60.2 days and aggregates up to 25.08" (637mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Monessen.On the first day of December in Monessen, sunrise is at 7:23 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:04 pm EST.
Sunshine
The average sunshine in December in Monessen is 3.6h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Monessen. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 1 in December translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Direct Sun exposure should be minimized especially during midday when radiation is most intense. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
Is December cold in Monessen?
What is the average humidity in December in Monessen?
How many days does it rain in December in Monessen?
How much does it snow in Monessen in December?
What is the month with the shortest days in Monessen?
How many hours of daylight does Monessen have in December?
When is the sunrise / sunset in December in Monessen?
How long on average sun shines in December in Monessen?
What is the month with the lowest UV index in Monessen?
How high is the UV index in December in Monessen?
Average temperature in December
Monessen, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Monessen, 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
Monessen, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Monessen, PA
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Monessen, PA
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in December
Monessen, PA
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is May (21.8 days).
The months with the least rainy days are January and February (11.7 days).
Average snowfall in December
Monessen, PA
- Average snowfall in December: 4.88"
The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Monessen, PA
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Monessen, 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 4min
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
Monessen, PA
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is November (14.3 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in December
Monessen, PA
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Monessen, 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
Monessen, PA
- Average visibility in December: 5mi
The months with the highest visibility are April, August and November (6mi).
The months with the lowest visibility are January and February (4mi).
Monessen, Pennsylvania, USA
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