December weather forecast
Cynthiana, OH

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Weather in December

December, the first month of the winter in Cynthiana, is also a wintry month, with an average temperature varying between 40.8°F (4.9°C) and 30°F (-1.1°C).

Temperature

The onset of December is marked by a decrease in temperature, transitioning from a cool 50.9°F (10.5°C) in November to an icy 40.8°F (4.9°C). Cynthiana usually reports an average low-temperature of 30°F (-1.1°C) during the month of December.

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 82%.

Rainfall

In December, the rain falls for 12.1 days. Throughout December, 3.03" (77mm) of precipitation is accumulated. Throughout the year, in Cynthiana, there are 174 rainfall days, and 34.72" (882mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Cynthiana, Ohio, are January through April, October through December. In December, in Cynthiana, it is snowing for 9.3 days. Throughout December, 2.99" (76mm) of snow is accumulated. Throughout the year, in Cynthiana, there are 40.1 snowfall days, and 15.04" (382mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:34 am and sunset at 5:11 pm. On the last day of December, sunrise is at 7:52 am and sunset at 5:20 pm EST.

Sunshine

The average sunshine in December in Cynthiana is 4.1h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 1 translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Frequently asked questions

How cold is December in Cynthiana?

The high-temperature in Cynthiana, Ohio, during December is 40.8°F (4.9°C) and the low-temperature is 30°F (-1.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in August is calculated to be 87.8°F (31°C).

What are the most humid months in Cynthiana?

The months with the highest humidity in Cynthiana, Ohio, are January, February and December, with an average relative humidity of 82%.

What is the average humidity in December in Cynthiana?

In Cynthiana, Ohio, the average relative humidity in December is 82%.

How many days does it rain in December in Cynthiana?

In Cynthiana, Ohio, in December, during 12.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

How much does it snow in Cynthiana in December?

In December, it is snowing for 9.3 days. Throughout December, 2.99" (76mm) of snow is accumulated.

What is the month with the shortest days in Cynthiana?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

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

In Cynthiana, the average day length in December is 9h and 28min.

When is the sunrise / sunset in December in Cynthiana?

On the first day of December in Cynthiana, Ohio, sunrise is at 7:34 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:20 pm EST.

How long on average sun shines in December in Cynthiana?

In December, the average sunshine duration in Cynthiana, Ohio, is 4.1h.

When is the lowest UV index in Cynthiana?

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

How high is the UV index in December in Cynthiana?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's 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
Cynthiana, OH

Average temperature in December - Cynthiana, OH
  • Average high temperature in December: 40.8°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 30°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 (22.8°F).

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Average pressure in December
Cynthiana, OH

Average pressure in December - Cynthiana, OH
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Cynthiana, OH

Average wind speed in December - Cynthiana, OH
  • Average wind speed in December: 8.8mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in December
Cynthiana, OH

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

The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in December
Cynthiana, OH

Average rainfall in December - Cynthiana, OH
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in December
Cynthiana, OH

Average rainfall days in December - Cynthiana, OH
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (10.3 days).

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Average snowfall in December
Cynthiana, OH

Average snowfall in December - Cynthiana, OH
  • Average snowfall in December: 2.99"

The month with the highest snowfall is February (4.06").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Cynthiana, OH

Average snowfall days in December - Cynthiana, OH
  • Average snowfall days in December: 9.3 days

The month with the highest number of snowfall days is January (11.3 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
Cynthiana, OH

Average daylight in December / Average sunshine in December - Cynthiana, OH
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in December
Cynthiana, OH

Average sunshine days in December - Cynthiana, OH
  • Average sunshine days in December: 12.2 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (8.9 days).

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Average UV index in December
Cynthiana, OH

Average UV index in December - Cynthiana, 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
Cynthiana, OH

Average cloud cover in December - Cynthiana, OH
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Cynthiana, OH

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

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

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Cynthiana, Ohio, USA

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