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
In December, the average high-temperature decreases from a chilly 47.8°F (8.8°C) in November to a cold 37.6°F (3.1°C). Rosas's temperature in December lowers to a consistent average of 26.1°F (-3.3°C) during the nights.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 83%.Rainfall
In Rosas, in December, during 11.5 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Rosas, during the entire year, the rain falls for 150.5 days and collects up to 19.37" (492mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Rosas, in December, snow falls for 6.6 days, with typically accumulated 1.34" (34mm) of snow. In Rosas, during the entire year, snow falls for 36.1 days and aggregates up to 9.8" (249mm) of snow.Daylight
December has the shortest days of the year in Rosas, with an average of 9h and 12min of daylight.On the first day of December in Rosas, sunrise is at 7:06 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:39 pm EST.
Sunshine
The average sunshine in December in Rosas is 4.6h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rosas. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Rosas?
What are the most humid months in Rosas?
What is the average humidity in December in Rosas?
How much does it rain in Rosas in December?
How many days does it snow in December in Rosas?
What is the month with the shortest days in Rosas?
How many hours of daylight does Rosas have in December?
When are sunrise and sunset in December in Rosas?
How long on average sun shines in December in Rosas?
What is the month with the lowest UV index in Rosas?
What is the UV index reading in December in Rosas?
Average temperature in December
Rosas, PA
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Rosas, PA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Rosas, PA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Rosas, PA
- Average humidity in December: 83%
The months with the highest relative humidity are February and December (83%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in December
Rosas, PA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Rosas, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (16.7 days).
The months with the least rainy days are January and February (8.6 days).
Average snowfall in December
Rosas, PA
- Average snowfall in December: 1.34"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rosas, PA
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rosas, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Rosas, PA
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is October (17.4 days).
The months with the least sunshine days are April and May (11.8 days).
Average UV index in December
Rosas, PA
- Average UV index in December: 2
The month with the highest UV index is June (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
Rosas, PA
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Rosas, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Rosas, Pennsylvania, USA
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