December weather forecast and climate
Potsdam, NY

Weather in December

December, the first month of the winter, in Potsdam, is also a subzero cold month, with temperature in the range of an average low of 20.3°F (-6.5°C) and an average high of 30.2°F (-1°C).

Temperature

In Potsdam, the average high-temperature in December drops, from a wintry 41.9°F (5.5°C) in November, to a freezing cold 30.2°F (-1°C). In Potsdam, the average low-temperature is 20.3°F (-6.5°C).

Humidity

In December, the average relative humidity is 86%.

Rainfall

In Potsdam, during 9.8 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Potsdam, during the entire year, the rain falls for 156 days and collects up to 29.72" (755mm) of precipitation.

Snowfall

Months with snowfall in Potsdam are January through May, October through December. In Potsdam, in December, during 14.6 snowfall days, 6.34" (161mm) of snow is typically accumulated. In Potsdam, during the entire year, snow falls for 74.7 days, and aggregates up to 37.99" (965mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8.9h of daylight.

Sunshine

In December, the average sunshine in Potsdam 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 health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 1 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Potsdam?

In Potsdam, in December, the average high-temperature is 30.2°F (-1°C), and the average low-temperature is 20.3°F (-6.5°C).

What is the average humidity in December in Potsdam?

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

How many days does it rain in December in Potsdam?

In Potsdam, New York, in December, it is raining for 9.8 days, with typically 2.36" (60mm) of accumulated precipitation.

How many days does it snow in December in Potsdam?

In December, it is snowing for 14.6 days. Throughout December, 6.34" (161mm) of snow is accumulated.

What is the month with the shortest days in Potsdam?

With an average of 8.9h of daylight, December has the shortest days of the year in Potsdam, New York.

How many hours of daylight does Potsdam have in December?

The average length of the day in December is 8.9h.

How long on average sun shines in December in Potsdam?

The average sunshine in December in Potsdam, New York, is 2.8h.

What are the months with the lowest UV index in Potsdam?

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

How high is the UV index in December in Potsdam?

The average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.

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"

The month with the highest atmospheric pressure is November (30.07").
The month with the lowest atmospheric pressure is June (29.91").

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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%

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").
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).
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: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 2.8h

The month with the most sunshine is July (Average sunshine: 10.1h).
Months with the least sunshine are January and February (Average sunshine: 2.6).

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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

Months with the highest UV index are June, July and August (UV index 5).
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

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

Months with the highest visibility are April, May, June, July, September and October (6mi).
Months with the lowest visibility are January and February (4mi).

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