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 Ulysses, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 43.7°F (6.5°C) to a cold 34.2°F (1.2°C). Ulysses encounters a steady low-temperature average of 24.1°F (-4.4°C) throughout the month of December.Humidity
In Ulysses, Pennsylvania, the average relative humidity in December is 86%.Rainfall
In Ulysses, in December, during 11.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 174 rainfall days, and 30.83" (783mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Ulysses, in December, during 18 snowfall days, 7.95" (202mm) of snow is typically accumulated. Throughout the year, there are 86.8 snowfall days, and 41.54" (1055mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:19 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:50 pm EST.
Sunshine
January and December, with an average of 2.9h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Boost your sun resistance with garments that are densely woven yet spacious. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Ulysses?
What is the average length of the day in December?
When 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 in Ulysses?
Average temperature in December
Ulysses, PA
- Average high temperature in December: 34.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Ulysses, PA
- Average pressure in December: 30.09"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
Ulysses, PA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Ulysses, PA
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in December
Ulysses, PA
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Ulysses, PA
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in December
Ulysses, PA
- Average snowfall in December: 7.95"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ulysses, PA
- Average snowfall days in December: 18 days
The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ulysses, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and December (Average sunshine: 2h and 54min).
Average sunshine days in December
Ulysses, PA
- Average sunshine days in December: 7 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (5.9 days).
Average UV index in December
Ulysses, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Ulysses, PA
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 41).
Average visibility in December
Ulysses, PA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February and September (4mi).
Ulysses, Pennsylvania, USA
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