December weather forecast
Iron River, MI

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Weather in December

December, the first month of the winter in Iron River, is also a subzero cold month, with an average temperature fluctuating between 15.6°F (-9.1°C) and 24.6°F (-4.1°C).

Temperature

The transition into December indicates a reduction in the average high-temperature, down to a subzero cold 24.6°F (-4.1°C) from November's wintry 36.3°F (2.4°C). Iron River, during the December nights, maintains an average temperature of 15.6°F (-9.1°C), closely aligned with its daytime readings.

Humidity

The average relative humidity in December is 88%.

Rainfall

In Iron River, Michigan, in December, it is raining for 4.9 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 120.5 rainfall days, and 19.17" (487mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 21 days and typically aggregates up to 7.32" (186mm) of snow.

Daylight

December has the shortest days of the year in Iron River, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:10 pm. On the last day of December, in Iron River, sunrise is at 7:36 am and sunset at 4:19 pm CST.

Sunshine

In December, the average sunshine is 2.4h.

UV index

The months with the lowest UV index in Iron River are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 1 in December suggests the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

How cold is December in Iron River?

In December, the average high-temperature and low-temperature in Iron River are 24.6°F (-4.1°C) and 15.6°F (-9.1°C) respectively.

What is the average humidity in December in Iron River?

In Iron River, Michigan, the average relative humidity in December is 88%.

How many days does it rain in December in Iron River?

In Iron River, Michigan, during December, the rain falls for 4.9 days and regularly aggregates up to 1.18" (30mm) of precipitation.

What is the snowiest month in Iron River?

December is the month with the most snowfall in Iron River, Michigan. Snow falls for 21 days and accumulates 7.32" (186mm) of snow.

How many days does it snow in December in Iron River?

In Iron River, during December, snow falls for 21 days and regularly aggregates up to 7.32" (186mm) of snow.

What is the month with the shortest days in Iron River?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

How many hours of daylight does Iron River have in December?

In Iron River, the average day length in December is 8h and 42min.

When are sunrise and sunset in December in Iron River?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:10 pm. On the last day of the month, in Iron River, Michigan, sunrise is at 7:36 am and sunset at 4:19 pm CST.

How long on average sun shines in December in Iron River?

In Iron River, the average sunshine duration in December is 2.4h.

When is the lowest UV index in Iron River?

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

What is the UV index reading in December in Iron River?

In Iron River, Michigan, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Iron River, MI

Average temperature in December - Iron River, MI
  • Average high temperature in December: 24.6°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (19.6°F).

  • Average low temperature in December: 15.6°F

The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).

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Average pressure in December
Iron River, MI

Average pressure in December - Iron River, MI
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Iron River, MI

Average wind speed in December - Iron River, MI
  • Average wind speed in December: 8.2mph

The windiest months (with the highest average wind speed) are January and November (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

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Average humidity in December
Iron River, MI

Average humidity in December - Iron River, MI
  • Average humidity in December: 88%

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (71%).

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Average rainfall in December
Iron River, MI

Average rainfall in December - Iron River, MI
  • Average rainfall in December: 1.18"

The wettest months (with the highest rainfall) are May and June (2.24").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in December
Iron River, MI

Average rainfall days in December - Iron River, MI
  • Average rainfall days in December: 4.9 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in December
Iron River, MI

Average snowfall in December - Iron River, MI
  • Average snowfall in December: 7.32"

The month with the highest snowfall is December (7.32").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Iron River, MI

Average snowfall days in December - Iron River, MI
  • Average snowfall days in December: 21 days

The month with the highest number of snowfall days is January (23.9 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
Iron River, MI

Average daylight in December / Average sunshine in December - Iron River, MI
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 2h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).

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Average sunshine days in December
Iron River, MI

Average sunshine days in December - Iron River, MI
  • Average sunshine days in December: 10.3 days

The month with the most sunshine days is September (14.5 days).
The months with the least sunshine days are January and February (7.8 days).

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Average UV index in December
Iron River, MI

Average UV index in December - Iron River, 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, November and December (UV index 1).

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Average cloud cover in December
Iron River, MI

Average cloud cover in December - Iron River, MI
  • Average cloud cover in December: 76

The months with the most cloud cover are January and February (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in December
Iron River, MI

Average visibility in December - Iron River, MI
  • Average visibility in December: 5mi

The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January and February (4mi).

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Iron River, Michigan, USA

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