December weather forecastCossart, PA
December
Weather in December
The first month of the winter, December, is still a chilly month in Cossart, Pennsylvania, with temperature in the range of an average low of 32.7°F (0.4°C) and an average high of 43.7°F (6.5°C).Temperature
December ushers in a minute temperature change, with average high-temperatures reducing from November's fresh 52.2°F (11.2°C) to a chilly 43.7°F (6.5°C). Cossart cools down to an average low-temperature of 32.7°F (0.4°C) throughout the month of December.Humidity
In Cossart, the average relative humidity in December is 77%.Rainfall
In Cossart, during December, the rain falls for 11.5 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, in Cossart, there are 168.9 rainfall days, and 35.55" (903mm) of precipitation is accumulated.Snowfall
Months with snowfall in Cossart are January through May, October through December. In Cossart, in December, snow falls for 3.2 days, with typically accumulated 1.54" (39mm) of snow. Throughout the year, there are 21.9 snowfall days, and 12.05" (306mm) of snow is accumulated.Daylight
December has the shortest days of the year in Cossart, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:47 pm EST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cossart, PA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
Cossart, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Cossart, PA
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Cossart, PA
- Average humidity in December: 77%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Cossart, PA
- Average rainfall in December: 3.31"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").
Average rainfall days in December
Cossart, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Cossart, PA
- Average snowfall in December: 1.54"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cossart, PA
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cossart, 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Cossart, PA
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is November (18.6 days).
The months with the least sunshine days are May and July (9.8 days).
Average UV index in December
Cossart, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Cossart, PA
- Average cloud cover in December: 46
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Cossart, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
