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's arrival corresponds with a decrease in average high-temperatures, from November's frosty 46.9°F (8.3°C) to a wintry 37°F (2.8°C). In Clarence, an average nighttime temperature of 26.4°F (-3.1°C) is expected during December.Humidity
February and December, with an average relative humidity of 84%, are the most humid months.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 1.81" (46mm) of precipitation is accumulated. In Clarence, during the entire year, the rain falls for 158.7 days and collects up to 23.74" (603mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 9 days. Throughout December, 2.99" (76mm) of snow is accumulated. In Clarence, during the entire year, snow falls for 47.4 days and aggregates up to 17.13" (435mm) 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 in Clarence, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:53 pm EST.
Sunshine
In Clarence, the average sunshine in December is 3.6h.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 exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the most humid month?
What is the average humidity in December in Clarence?
How much 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 Clarence have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Clarence have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Clarence, PA
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Clarence, 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 (29.95"Hg).
Average wind speed in December
Clarence, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Clarence, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Clarence, PA
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in December
Clarence, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are January and February (8.3 days).
Average snowfall in December
Clarence, PA
- Average snowfall in December: 2.99"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Clarence, PA
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Clarence, PA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Clarence, PA
- Average sunshine days in December: 14.2 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in December
Clarence, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Clarence, PA
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Clarence, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Clarence, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location