December weather forecast
Potsdam, NY

Weather in December

The first month of the winter, December, is still a freezing cold month in Potsdam, New York, with an average temperature ranging between max 30.2°F (-1°C) and min 20.3°F (-6.5°C).

Temperature

In December, the average high-temperature drops from a wintry 41.9°F (5.5°C) in November to a subzero 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 in Potsdam is 86%.

Rainfall

In Potsdam, in December, it is raining for 9.8 days, with typically 2.36" (60mm) of accumulated precipitation. 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, New York, are January through May, October through December. In December, it is snowing for 14.6 days. Throughout December, 6.34" (161mm) of snow is accumulated. In Potsdam, New York, 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 53min of daylight.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:21 pm. On the last day of December, in Potsdam, sunrise is at 7:36 am and sunset at 4:29 pm EST.

Sunshine

In December, the average sunshine 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 value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Potsdam?

The average high-temperature, in December, in Potsdam, New York, is 30.2°F (-1°C), while the average low-temperature is 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, New York, in December, during 9.8 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

How many days does it snow in December in Potsdam?

In Potsdam, New York, in December, during 14.6 snowfall days, 6.34" (161mm) of snow is typically accumulated.

What is the month with the shortest days in Potsdam?

With an average of 8h and 53min of daylight, December has the shortest days of the year.

How many hours of daylight does Potsdam have in December?

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

When is the sunrise / sunset in December in Potsdam?

On the first day of December in Potsdam, sunrise is at 7:16 am and sunset at 4:21 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?

The average sunshine duration in December in Potsdam 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.

What is the UV index intensity in December in Potsdam?

In Potsdam, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from 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 53min

The month with the longest days is June (Average daylight: 15h and 31min).
The month with the shortest days is December (Average daylight: 8h and 53min).

  • 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).

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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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