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
The arrival of December corresponds with a temperature reduction, down from November's frosty 48.6°F (9.2°C) to a wintry 39.4°F (4.1°C). December brings with it a nighttime average temperature of 28.2°F (-2.1°C) in Schuylkill Haven.Humidity
In December, the average relative humidity is 81%.Rainfall
In Schuylkill Haven, during December, the rain falls for 10.5 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Schuylkill Haven, during the entire year, the rain falls for 145.2 days and collects up to 21.1" (536mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Schuylkill Haven, during December, snow falls for 5.4 days and regularly aggregates up to 1.38" (35mm) of snow. In Schuylkill Haven, during the entire year, snow falls for 28.1 days and aggregates up to 8.94" (227mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:09 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:47 pm EST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 4.5h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Schuylkill Haven have in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Schuylkill Haven, PA
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Schuylkill Haven, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Schuylkill Haven, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Schuylkill Haven, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in December
Schuylkill Haven, PA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
Schuylkill Haven, PA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Schuylkill Haven, PA
- Average snowfall in December: 1.38"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Schuylkill Haven, PA
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Schuylkill Haven, 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: 4h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 30min).
Average sunshine days in December
Schuylkill Haven, PA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in December
Schuylkill Haven, PA
- Average UV index in December: 2
The month with the highest UV index is 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
Schuylkill Haven, PA
- Average cloud cover in December: 52
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Schuylkill Haven, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, June, July and November (6mi).
The months with the lowest visibility are February, May, August, September, October and December (5mi).
Schuylkill Haven, Pennsylvania, USA
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