December weather forecast
Potsdam, OH

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Weather in December

The first month of the winter, December, is also a wintry month in Potsdam, Ohio, with an average temperature ranging between min 28°F (-2.2°C) and max 38.3°F (3.5°C).

Temperature

December weather is marked by a drop in the average high-temperature, falling from a chilly 48.9°F (9.4°C) in November to a wintry 38.3°F (3.5°C). In Potsdam, the average nighttime temperature during December is a freezing cold 28°F (-2.2°C).

Humidity

In December, the average relative humidity is 82%.

Rainfall

In Potsdam, during December, the rain falls for 8.7 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 148.7 rainfall days, and 22.32" (567mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Potsdam are January through April, October through December. In Potsdam, during December, snow falls for 6.4 days and regularly aggregates up to 1.34" (34mm) of snow. In Potsdam, during the entire year, snow falls for 29.5 days and aggregates up to 6.69" (170mm) of snow.

Daylight

The month with the shortest days in Potsdam, Ohio, is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:40 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:59 am and sunset at 5:22 pm EST.

Sunshine

In December, the average sunshine is 4h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a daily UV index of 1 turns into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

How cold is it in Potsdam in December?

Potsdam in December has an average high-temperature of 38.3°F (3.5°C) and an average low-temperature of 28°F (-2.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the average humidity in December in Potsdam?

The average relative humidity in December in Potsdam, Ohio, is 82%.

How much does it rain in Potsdam in December?

In Potsdam, Ohio, in December, it is raining for 8.7 days, with typically 1.5" (38mm) of accumulated precipitation.

How much does it snow in Potsdam in December?

In December, it is snowing for 6.4 days. Throughout December, 1.34" (34mm) of snow is accumulated.

What is the month with the shortest days in Potsdam?

The month with the shortest days in Potsdam is December, with an average of 9h and 24min of daylight.

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

The average day length in December is 9h and 23min.

What time are sunrise and sunset in December in Potsdam?

On the first day of December in Potsdam, sunrise is at 7:40 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 5:22 pm EST.

How many hours of sunshine does Potsdam have in December?

In Potsdam, the average sunshine duration in December is 4h.

What is the month with the lowest UV index in Potsdam?

With an average maximum UV index of 1, December is the month with the lowest UV index in Potsdam.

What is the UV index intensity in December in Potsdam?

In Potsdam, Ohio, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents 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, OH

Average temperature in December - Potsdam, OH
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in December
Potsdam, OH

Average pressure in December - Potsdam, OH
  • Average pressure in December: 30.12"Hg

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Potsdam, OH

Average wind speed in December - Potsdam, OH
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in December
Potsdam, OH

Average humidity in December - Potsdam, OH
  • Average humidity in December: 82%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in December
Potsdam, OH

Average rainfall in December - Potsdam, OH
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is February (1.3").

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Average rainfall days in December
Potsdam, OH

Average rainfall days in December - Potsdam, OH
  • Average rainfall days in December: 8.7 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (6.5 days).

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Average snowfall in December
Potsdam, OH

Average snowfall in December - Potsdam, OH
  • Average snowfall in December: 1.34"

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Potsdam, OH

Average snowfall days in December - Potsdam, OH
  • Average snowfall days in December: 6.4 days

The month with the highest number of snowfall days is January (9.4 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, OH

Average daylight in December / Average sunshine in December - Potsdam, OH
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in December
Potsdam, OH

Average sunshine days in December - Potsdam, OH
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10 days).

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Average UV index in December
Potsdam, OH

Average UV index in December - Potsdam, OH
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Potsdam, OH

Average cloud cover in December - Potsdam, OH
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Potsdam, OH

Average visibility in December - Potsdam, OH
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).

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Potsdam, Ohio, USA

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