December weather forecast
Casstown, OH

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Weather in December

The first month of the winter, December, is also an icy month in Casstown, Ohio, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 28.2°F (-2.1°C).

Temperature

The onset of December introduces a moderate change in Casstown's weather, with average high-temperatures falling from November's chilly 48.6°F (9.2°C) to an icy 38.3°F (3.5°C). Casstown experiences a mean temperature of 28.2°F (-2.1°C) during December nights.

Humidity

The months with the highest humidity in Casstown, Ohio, are January and December, with an average relative humidity of 83%.

Rainfall

In December, in Casstown, the rain falls for 9.2 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, in Casstown, there are 149.8 rainfall days, and 22.95" (583mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Casstown, in December, during 7.5 snowfall days, 1.81" (46mm) of snow is typically accumulated. In Casstown, during the entire year, snow falls for 34.4 days and aggregates up to 8.74" (222mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December in Casstown, sunrise is at 7:39 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:21 pm EST.

Sunshine

The average sunshine in December is 3.9h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 1 suggests this advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

How cold is it in Casstown in December?

The high-temperature, in December, in Casstown, is 38.3°F (3.5°C), while the low-temperature averages to 28.2°F (-2.1°C).

What are the most humid months in Casstown?

The months with the highest humidity in Casstown, Ohio, are January and December, with an average relative humidity of 83%.

What is the average humidity in December in Casstown?

In Casstown, the average relative humidity in December is 83%.

How much does it rain in Casstown in December?

In Casstown, Ohio, in December, during 9.2 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

How much does it snow in Casstown in December?

In Casstown, during December, snow falls for 7.5 days and regularly aggregates up to 1.81" (46mm) of snow.

What is the month with the shortest days in Casstown?

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

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

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

When is the sunrise / sunset in December in Casstown?

On the first day of December in Casstown, sunrise is at 7:39 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:21 pm EST.

How long on average sun shines in December in Casstown?

The average sunshine duration in December is 3.9h.

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

The month with the lowest UV index in Casstown, Ohio, is December, with an average maximum UV index of 1.

How high is the UV index in December in Casstown?

The average daily maximum UV index in December in Casstown, Ohio, is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
Casstown, OH

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

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in December: 28.2°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in December
Casstown, OH

Average pressure in December - Casstown, 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
Casstown, OH

Average wind speed in December - Casstown, 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
Casstown, OH

Average humidity in December - Casstown, OH
  • Average humidity in December: 83%

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

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Average rainfall in December
Casstown, OH

Average rainfall in December - Casstown, OH
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is November (1.26").

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Average rainfall days in December
Casstown, OH

Average rainfall days in December - Casstown, OH
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (7 days).

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Average snowfall in December
Casstown, OH

Average snowfall in December - Casstown, OH
  • Average snowfall in December: 1.81"

The month with the highest snowfall is February (2.24").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Casstown, OH

Average snowfall days in December - Casstown, OH
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is January (9.8 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
Casstown, OH

Average daylight in December / Average sunshine in December - Casstown, 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: 3h and 5min

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
Casstown, OH

Average sunshine days in December - Casstown, OH
  • Average sunshine days in December: 15.8 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.1 days).

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Average UV index in December
Casstown, OH

Average UV index in December - Casstown, 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
Casstown, OH

Average cloud cover in December - Casstown, OH
  • Average cloud cover in December: 60

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Casstown, OH

Average visibility in December - Casstown, 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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Casstown, Ohio, USA

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