December weather forecastPotsdam, NY
December
Weather in December
December marks the advent of winter in Potsdam, New York, with freezing temperatures and frequent snowfalls. The weather in December is notably colder than November. The snowfall rises up to 6.34" (161mm), covering Potsdam in a blanket of snow. Despite the chill, the snow-clad landscapes and holiday decorations make Potsdam, New York a uniquely charming place to wrap up the year.Temperature
A shift in Potsdam's weather is observed as November turns into December, with the average high temperature reducing from a wintry 41.9°F (5.5°C) to a freezing cold 30.2°F (-1°C). Potsdam records an average low-temperature of 20.3°F (-6.5°C) throughout the month of December.Humidity
In Potsdam, the average relative humidity in December is 86%.Rainfall
In Potsdam, during December, the rain falls for 9.8 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Potsdam, during the entire year, the rain falls for 156 days and collects up to 29.72" (755mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Potsdam, during December, snow falls for 14.6 days and regularly aggregates up to 6.34" (161mm) of snow. In Potsdam, during the entire year, snow falls for 74.7 days and aggregates up to 37.99" (965mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:29 pm EST.
Sunshine
In Potsdam, the average sunshine in December is 2.8h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: During December, 1 as the daily maximum UV index converts into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Potsdam, NY
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Potsdam, NY
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Potsdam, NY
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Potsdam, NY
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Potsdam, NY
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.03").
The driest months (with the least rainfall) are March and September (2.01").
Average rainfall days in December
Potsdam, NY
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Potsdam, NY
- Average snowfall in December: 6.34"
The month with the highest snowfall is January (8.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Potsdam, NY
- Average snowfall days in December: 14.6 days
The month with the highest number of snowfall days is February (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Potsdam, NY
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 2h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).
Average sunshine days in December
Potsdam, NY
- Average sunshine days in December: 10.9 days
The month with the most sunshine days is November (15 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in December
Potsdam, NY
- Average UV index in December: 1
The months with the highest UV index are 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
Potsdam, NY
- Average cloud cover in December: 71
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in December
Potsdam, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
