December weather forecast
Troy, OH

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Weather in December

December, the first month of the winter in Troy, is still a cold month, with an average temperature fluctuating between 28.2°F (-2.1°C) and 38.3°F (3.5°C).

Temperature

Onset of December comes with a temperature decline, the average high falling from a chilly 48.6°F (9.2°C) in November to a wintry 38.3°F (3.5°C). December in Troy is noted for a mean low-temperature of 28.2°F (-2.1°C).

Humidity

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

Rainfall

In Troy, in December, it is raining for 9.2 days, with typically 1.57" (40mm) of accumulated precipitation. In Troy, during the entire year, the rain falls for 149.8 days and collects up to 22.95" (583mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Troy, Ohio. In December, it is snowing for 7.5 days. Throughout December, 1.81" (46mm) of snow is accumulated. Throughout the year, in Troy, there are 34.4 snowfall days, and 8.74" (222mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:40 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:58 am and sunset at 5:21 pm EST.

Sunshine

In Troy, 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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 1 during December translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. 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 December in Troy?

Troy in December has an average high-temperature of 38.3°F (3.5°C) and an average low-temperature of 28.2°F (-2.1°C).

What are the most humid months in Troy?

January and December, with an average relative humidity of 83%, are most humid months in Troy, Ohio.

What is the average humidity in December in Troy?

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

How many days does it rain in December in Troy?

In December, in Troy, Ohio, the rain falls for 9.2 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

How many days does it snow in December in Troy?

In Troy, in December, snow falls for 7.5 days, with typically accumulated 1.81" (46mm) of snow.

What is the month with the shortest days in Troy?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Troy.

How many hours of daylight does Troy have in December?

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

When are sunrise and sunset in December in Troy?

On the first day of December in Troy, sunrise is at 7:40 am and sunset at 5:12 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 Troy?

In Troy, the average sunshine duration in December is 3.9h.

When is the lowest UV index in Troy?

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

How high is the UV index in December in Troy?

The average daily maximum UV index in December in Troy, Ohio, is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Troy, OH

Average temperature in December - Troy, 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
Troy, OH

Average pressure in December - Troy, 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
Troy, OH

Average wind speed in December - Troy, 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
Troy, OH

Average humidity in December - Troy, 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
Troy, OH

Average rainfall in December - Troy, 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
Troy, OH

Average rainfall days in December - Troy, 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
Troy, OH

Average snowfall in December - Troy, 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
Troy, OH

Average snowfall days in December - Troy, 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
Troy, OH

Average daylight in December / Average sunshine in December - Troy, 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
Troy, OH

Average sunshine days in December - Troy, 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
Troy, OH

Average UV index in December - Troy, 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
Troy, OH

Average cloud cover in December - Troy, 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
Troy, OH

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

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