December weather forecast
Potsdam, NY

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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

Potsdam's December weather comes with a decrease in average high-temperatures, moving from a wintry 41.9°F (5.5°C) in November to a subzero cold 30.2°F (-1°C). Potsdam's nighttime temperature during December is consistently averaged at 20.3°F (-6.5°C).

Humidity

The average relative humidity in December in Potsdam is 86%.

Rainfall

In Potsdam, in December, it is raining for 9.8 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 156 rainfall days, and 29.72" (755mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. 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 the month, sunrise is at 7:17 am and sunset at 4:20 pm. On the last day of December, 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

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 low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 1 in December transforms into the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is it in Potsdam in December?

Potsdam in December has an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 20.3°F (-6.5°C).

What is the average humidity in December in Potsdam?

In December, the average relative humidity in Potsdam is 86%.

How many days does it rain in December in Potsdam?

In Potsdam, during December, the rain falls for 9.8 days and regularly aggregates up to 2.36" (60mm) of precipitation.

How much does it snow in Potsdam in December?

In Potsdam, during December, snow falls for 14.6 days and regularly aggregates up to 6.34" (161mm) of snow.

What is the month with the shortest days in Potsdam?

The month with the shortest days in Potsdam, New York, is December, with an average of 8h and 54min of daylight.

What is the average length of the day in December in Potsdam?

In Potsdam, New York, the average day length in December is 8h and 53min.

When is the sunrise / sunset in December in Potsdam?

On the first day of December in Potsdam, 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.

How long on average sun shines in December in Potsdam?

In December, the average sunshine duration in Potsdam, New York, is 2.8h.

When is the lowest UV index in Potsdam?

The months with the lowest UV index in Potsdam, New York, are January and December, with an average maximum UV index of 1.

How high is the UV index in December in Potsdam?

In December, the average daily maximum UV index in Potsdam is 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Potsdam, NY

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).

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Average pressure in December
Potsdam, NY

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).

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Average wind speed in December
Potsdam, NY

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).

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Average humidity in December
Potsdam, NY

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%).

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Average rainfall in December
Potsdam, NY

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").

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Average rainfall days in December
Potsdam, NY

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).

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Average snowfall in December
Potsdam, NY

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").

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Average snowfall days in December
Potsdam, NY

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).

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Average daylight in December /
Average sunshine in December
Potsdam, NY

Average daylight in December / Average sunshine in December - Potsdam, NY
  • Average daylight in December: 8h and 5min

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 5min

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).

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Average sunshine days in December
Potsdam, NY

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).

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Average UV index in December
Potsdam, NY

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).

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Average cloud cover in December
Potsdam, NY

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).

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Average visibility in December
Potsdam, NY

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).

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Potsdam, New York, USA

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