December weather forecast
Troy, MI

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Weather in December

December confirms the onset of winter in Troy, Michigan. Average minimum temperatures drop to 26.2°F (-3.2°C), and snowfall increases to 1.38" (35mm). The shortened daylight hours and the increased cloud cover contribute to December's chill. Despite the cold and snow, the city gets adorned with festive decorations, adding warmth to the frigid weather. December’s winter weather combined with the holiday spirit is characteristic of this period in Troy.

Temperature

As December arrives, Troy's weather displays a decrease in high-temperatures, transitioning from November's frosty 45.5°F (7.5°C) to a wintry 34.7°F (1.5°C). Troy reports an average low-temperature of 26.2°F (-3.2°C) during the subtly cooler December nights.

Humidity

The average relative humidity in December in Troy, Michigan, is 82%.

Rainfall

In Troy, in December, it is raining for 8.2 days, with typically 0.87" (22mm) of accumulated precipitation. In Troy, during the entire year, the rain falls for 136 days and collects up to 16.57" (421mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Troy, during December, snow falls for 11.2 days and regularly aggregates up to 1.38" (35mm) of snow. Throughout the year, in Troy, there are 52.3 snowfall days, and 10.59" (269mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:43 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:09 pm EST.

Sunshine

In Troy, the average sunshine in December is 3.5h.

UV index

December is the month with the lowest UV index in Troy, 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 radiation for average individuals.
Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Troy?

During December, Troy experiences an average high-temperature of 34.7°F (1.5°C) and a low-temperature of 26.2°F (-3.2°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is calculated to be 84.2°F (29°C).

What is the average humidity in December in Troy?

In December, the average relative humidity is 82%.

How many days does it rain in December in Troy?

In Troy, Michigan, in December, it is raining for 8.2 days, with typically 0.87" (22mm) of accumulated precipitation.

How much does it snow in Troy in December?

In Troy, Michigan, in December, snow falls for 11.2 days, with typically accumulated 1.38" (35mm) of snow.

What is the month with the shortest days in Troy?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

How many hours of daylight does Troy have in December?

In Troy, Michigan, the average day length in December is 9h and 7min.

What time are sunrise and sunset in December in Troy?

On the first day of December in Troy, sunrise is at 7:43 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:09 pm EST.

How many hours of sunshine does Troy have in December?

The average sunshine duration in December in Troy, Michigan, is 3.5h.

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.

What is the UV index intensity in December in Troy?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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, MI

Average temperature in December - Troy, MI
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in December: 26.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in December
Troy, MI

Average pressure in December - Troy, MI
  • Average pressure in December: 30.07"Hg

The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Troy, MI

Average wind speed in December - Troy, MI
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in December
Troy, MI

Average humidity in December - Troy, MI
  • Average humidity in December: 82%

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (74%).

Average rainfall in December
Troy, MI

Average rainfall in December - Troy, MI
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is February (0.83").

Average rainfall days in December
Troy, MI

Average rainfall days in December - Troy, MI
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in December
Troy, MI

Average snowfall in December - Troy, MI
  • Average snowfall in December: 1.38"

The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Troy, MI

Average snowfall days in December - Troy, MI
  • Average snowfall days in December: 11.2 days

The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Troy, MI

Average daylight in December / Average sunshine in December - Troy, MI
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 3h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days in December
Troy, MI

Average sunshine days in December - Troy, MI
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in December
Troy, MI

Average UV index in December - Troy, MI
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Troy, MI

Average cloud cover in December - Troy, MI
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in December
Troy, MI

Average visibility in December - Troy, MI
  • Average visibility in December: 6mi

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

Troy, Michigan, USA

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