December weather forecast
South Branch, MI

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Weather in December

December, the first month of the winter in South Branch, is also a subzero cold month, with an average temperature fluctuating between 30.6°F (-0.8°C) and 22.6°F (-5.2°C).

Temperature

With the onset of December, South Branch experiences a modest temperature adjustment, with the average high-temperature receding from a cold 41.9°F (5.5°C) in November to a subzero cold 30.6°F (-0.8°C). During December, the nighttime temperatures align closely with the daytime averages, measuring 22.6°F (-5.2°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In South Branch, in December, during 7.8 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 136.5 rainfall days, and 21.38" (543mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In South Branch, in December, during 16.8 snowfall days, 5.24" (133mm) of snow is typically accumulated. Throughout the year, there are 83.9 snowfall days, and 28.27" (718mm) of snow is accumulated.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:52 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:05 pm EST.

Sunshine

The average sunshine in December is 2.7h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 1 during December, leads to the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The average high-temperature, in December, in South Branch, is 30.6°F (-0.8°C), while the average low-temperature is 22.6°F (-5.2°C).

What is the average humidity in December?

The average relative humidity in December is 85%.

How much does it rain in December?

In South Branch, during December, the rain falls for 7.8 days and regularly aggregates up to 1.46" (37mm) of precipitation.

How many days does it snow in December?

In South Branch, during December, snow falls for 16.8 days and regularly aggregates up to 5.24" (133mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 54min of daylight.

How many hours of daylight does South Branch have in December?

The average day length in December is 8h and 54min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:52 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:05 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 2.7h.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

How high is the UV index in December?

In December, the average daily maximum UV index in South Branch is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
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
South Branch, MI

Average temperature in December - South Branch, MI
  • Average high temperature in December: 30.6°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in December: 22.6°F

The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure in December
South Branch, MI

Average pressure in December - South Branch, MI
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
South Branch, MI

Average wind speed in December - South Branch, MI
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in December
South Branch, MI

Average humidity in December - South Branch, MI
  • Average humidity in December: 85%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is May (72%).

Average rainfall in December
South Branch, MI

Average rainfall in December - South Branch, MI
  • Average rainfall in December: 1.46"

The wettest months (with the highest rainfall) are May and October (2.68").
The driest month (with the least rainfall) is September (0.98").

Average rainfall days in December
South Branch, MI

Average rainfall days in December - South Branch, MI
  • Average rainfall days in December: 7.8 days

The month with the highest number of rainy days is October (16.3 days).
The month with the least rainy days is February (4.4 days).

Average snowfall in December
South Branch, MI

Average snowfall in December - South Branch, MI
  • Average snowfall in December: 5.24"

The month with the highest snowfall is January (8.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
South Branch, MI

Average snowfall days in December - South Branch, MI
  • Average snowfall days in December: 16.8 days

The month with the highest number of snowfall days is January (21 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
South Branch, MI

Average daylight in December / Average sunshine in December - South Branch, MI
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 2h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).

Average sunshine days in December
South Branch, MI

Average sunshine days in December - South Branch, MI
  • Average sunshine days in December: 10.6 days

The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in December
South Branch, MI

Average UV index in December - South Branch, MI
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in December
South Branch, MI

Average cloud cover in December - South Branch, MI
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
South Branch, MI

Average visibility in December - South Branch, MI
  • Average visibility in December: 5mi

The months with the highest visibility are April, May, June, July, October and November (6mi).
The month with the lowest visibility is January (4mi).

South Branch, Michigan, USA

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