December weather forecast
Rochester Hills, MI

Weather in December

December, the first month of the winter in Rochester Hills, is still a cold month, with an average temperature varying between 25.9°F (-3.4°C) and 34.3°F (1.3°C).

Temperature

In December, the average high-temperature drops from a frosty 45.1°F (7.3°C) in November to a cold 34.3°F (1.3°C). In Rochester Hills, the average low-temperature is 25.9°F (-3.4°C).

Humidity

The average relative humidity in December in Rochester Hills is 82%.

Rainfall

February and December are months with the least rain when the rain falls for 8.8 days and typically aggregates up to 1.02" (26mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Rochester Hills, during December, snow falls for 13.9 days and regularly aggregates up to 2.4" (61mm) of snow. Throughout the year, there are 62.5 snowfall days, and 14.09" (358mm) of snow is accumulated.

Daylight

With an average of 9h and 7min of daylight, December has the shortest days of the year in Rochester Hills.
On the first day of the month, sunrise is at 7:42 am and sunset at 5:00 pm. On the last day of December, in Rochester Hills, sunrise is at 8:02 am and sunset at 5:08 pm EST.

Sunshine

In December, the average sunshine is 3.4h.

UV index

The month with the lowest UV index in Rochester Hills is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Rochester Hills?

The average high-temperature, in December, in Rochester Hills, Michigan, is 34.3°F (1.3°C), while the average low-temperature is 25.9°F (-3.4°C).

What is the average humidity in December in Rochester Hills?

The average relative humidity in December is 82%.

What is the driest month in Rochester Hills?

February and December are months with the least rain in Rochester Hills when the rain falls for 8.8 days and typically aggregates up to 1.02" (26mm) of rain.

How many days does it rain in December in Rochester Hills?

In December, the rain falls for 8.8 days. Throughout December, 1.02" (26mm) of precipitation is accumulated.

How much does it snow in Rochester Hills in December?

In Rochester Hills, Michigan, in December, during 13.9 snowfall days, 2.4" (61mm) of snow is typically accumulated.

What is the month with the shortest days in Rochester Hills?

With an average of 9h and 7min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Rochester Hills?

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

When is the sunrise / sunset in December in Rochester Hills?

In December, on the first day of the month, sunrise is at 7:42 am and sunset at 5:00 pm. On the last day of the month, in Rochester Hills, Michigan, sunrise is at 8:02 am and sunset at 5:08 pm EST.

How many hours of sunshine does Rochester Hills have in December?

In December, the average sunshine duration in Rochester Hills is 3.4h.

When is the lowest UV index in Rochester Hills?

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

What is the UV index reading in December in Rochester Hills?

The average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health threat 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
Rochester Hills, MI

Average temperature in December - Rochester Hills, MI
  • Average high temperature in December: 34.3°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

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Average pressure in December
Rochester Hills, MI

Average pressure in December - Rochester Hills, 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).

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Average wind speed in December
Rochester Hills, MI

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

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in December
Rochester Hills, MI

Average humidity in December - Rochester Hills, MI
  • Average humidity in December: 82%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, May, July and August (75%).

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Average rainfall in December
Rochester Hills, MI

Average rainfall in December - Rochester Hills, MI
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are February and December (1.02").

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Average rainfall days in December
Rochester Hills, MI

Average rainfall days in December - Rochester Hills, MI
  • Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.4 days).

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Average snowfall in December
Rochester Hills, MI

Average snowfall in December - Rochester Hills, MI
  • Average snowfall in December: 2.4"

The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Rochester Hills, MI

Average snowfall days in December - Rochester Hills, MI
  • Average snowfall days in December: 13.9 days

The month with the highest number of snowfall days is January (15.7 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
Rochester Hills, MI

Average daylight in December / Average sunshine in December - Rochester Hills, MI
  • Average daylight in December: 9h and 7min

The month with the longest days is June (Average daylight: 15h and 16min).
The month with the shortest days is December (Average daylight: 9h and 7min).

  • Average sunshine in December: 3h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in December
Rochester Hills, MI

Average sunshine days in December - Rochester Hills, MI
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is February (9.8 days).

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Average UV index in December
Rochester Hills, MI

Average UV index in December - Rochester Hills, MI
  • Average UV index in December: 1

The months with the highest UV index are 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
Rochester Hills, MI

Average cloud cover in December - Rochester Hills, 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).

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Average visibility in December
Rochester Hills, MI

Average visibility in December - Rochester Hills, MI
  • Average visibility in December: 6mi

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

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