December weather forecast and climate
Munising, MI

Weather in December

December, the first month of the winter, in Munising, is also a subzero cold month, with average temperature varying between 23°F (-5°C) and 29.3°F (-1.5°C).

Temperature

In December, the average high-temperature decreases, from a cold 39.4°F (4.1°C) in November, to a freezing cold 29.3°F (-1.5°C). The average low-temperature, in Munising, Michigan, is 23°F (-5°C).

Humidity

In December, the average relative humidity in Munising is 84%.

Rainfall

In December, the rain falls for 7 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 122.5 rainfall days, and 21.89" (556mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Munising. December is the month with the most snowfall. Snow falls for 18.4 days and accumulates 6.14" (156mm) of snow.

Ocean temperature

In December, the average ocean temperature in Munising is 39.9°F (4.4°C).
Note: For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

Daylight

With an average of 8.7h of daylight, December has the shortest days of the year in Munising.

Sunshine

In Munising, Michigan, the average sunshine is 2.2h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Munising?

In Munising, the average relative humidity in December is 84%.

How much does it rain in Munising in December?

In Munising, in December, it is raining for 7 days, with typically 1.57" (40mm) of accumulated precipitation.

What is the snowiest month in Munising?

December is the month with the most snowfall. Snow falls for 18.4 days and accumulates 6.14" (156mm) of snow.

How many days does it snow in December in Munising?

In December, in Munising, it is snowing for 18.4 days. Throughout December, 6.14" (156mm) of snow is accumulated.

What is the ocean temperature in December in Munising?

In Munising, Michigan, the average seawater temperature in December is 39.9°F (4.4°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the month with the shortest days in Munising?

With an average of 8.7h of daylight, December has the shortest days of the year in Munising, Michigan.

How many hours of daylight does Munising have in December?

In December, the average length of the day in Munising, Michigan, is 8.7h.

How many hours of sunshine does Munising have in December?

In Munising, Michigan, the average sunshine in December is 2.2h.

What is the month with the lowest UV index in Munising?

Months with the lowest UV index in Munising, Michigan, are January through March, November and December, with an average maximum UV index of 1.

What is the UV index reading in December in Munising?

In December, the average daily maximum UV index in Munising is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in December
Munising, MI

Average temperature in December - Munising, MI
  • Average high temperature in December: 29.3°F

The warmest month (with the highest average high temperature) is August (69.1°F).
The month with the lowest average high temperature is January (23.7°F).

  • Average low temperature in December: 23°F

The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).

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Average pressure in December
Munising, MI

Average pressure in December - Munising, MI
  • Average pressure in December: 30.02"

The month with the highest atmospheric pressure is March (30.08").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in December
Munising, MI

Average wind speed in December - Munising, MI
  • Average wind speed in December: 12.4mph

The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in December
Munising, MI

Average humidity in December - Munising, MI
  • Average humidity in December: 84%

Months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in December
Munising, MI

Average rainfall in December - Munising, MI
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is October (2.56").
The driest month (with the least rainfall) is January (1.26").

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Average rainfall days in December
Munising, MI

Average rainfall days in December - Munising, MI
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is October (14.6 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in December
Munising, MI

Average snowfall in December - Munising, MI
  • Average snowfall in December: 6.14"

The month with the highest snowfall is December (6.14").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Munising, MI

Average snowfall days in December - Munising, MI
  • Average snowfall days in December: 18.4 days

The month with the highest number of snowfall days is January (20.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Munising, MI

Average sea temperature in December - Munising, MI
  • Average sea temperature in December: 40°F

The best month for swimming (with the highest average sea temperature) is August (64.3°F).
The coldest months (with the lowest average sea temperature) are February and March (33.8°F).

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

Average daylight in December / Average sunshine in December - Munising, MI
  • Average daylight in December: 8.7h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in December: 2.2h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 1.8h).

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Average sunshine days in December
Munising, MI

Average sunshine days in December - Munising, MI
  • Average sunshine days in December: 6.9 days

The month with the most sunshine days is August (16.3 days).
The month with the least sunshine days is January (6.4 days).

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Average UV index in December
Munising, MI

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

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

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Average cloud cover in December
Munising, MI

Average cloud cover in December - Munising, MI
  • Average cloud cover in December: 76

The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in December
Munising, MI

Average visibility in December - Munising, MI
  • Average visibility in December: 5mi

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

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