December weather forecast
Ironton, MN

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Weather in December

The first month of the winter, December, is still a freezing cold month in Ironton, Minnesota, with an average temperature varying between 11.1°F (-11.6°C) and 22.3°F (-5.4°C).

Temperature

December comes with a drop in the average high-temperature, falling from November's wintry 36.3°F (2.4°C) to a freezing cold 22.3°F (-5.4°C). Ironton throughout December, experiences an average nighttime temperature of 11.1°F (-11.6°C).

Humidity

The average relative humidity in December is 88%.

Rainfall

In Ironton, in December, during 2.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Ironton, during the entire year, the rain falls for 108 days and collects up to 19.88" (505mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 18.7 days and typically aggregates up to 8.58" (218mm) of snow.

Daylight

The month with the shortest days in Ironton is December, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:30 pm. On the last day of December, in Ironton, sunrise is at 7:59 am and sunset at 4:38 pm CST.

Sunshine

In Ironton, 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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, a daily UV index of 1 turns into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

How cold is December in Ironton?

The average high-temperature and low-temperature during December are 22.3°F (-5.4°C) and 11.1°F (-11.6°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 84.2°F (29°C).

What is the average humidity in December in Ironton?

In December, the average relative humidity in Ironton, Minnesota, is 88%.

How many days does it rain in December in Ironton?

In Ironton, during December, the rain falls for 2.8 days and regularly aggregates up to 1.22" (31mm) of precipitation.

When does it snow the most in Ironton?

The month with the most snowfall in Ironton is December, when snow falls for 18.7 days and typically aggregates up to 8.58" (218mm) of snow.

How many days does it snow in December in Ironton?

In Ironton, Minnesota, during December, snow falls for 18.7 days and regularly aggregates up to 8.58" (218mm) of snow.

What is the month with the shortest days in Ironton?

December has the shortest days of the year in Ironton, with an average of 8h and 42min of daylight.

How many hours of daylight does Ironton have in December?

In Ironton, the average day length in December is 8h and 40min.

When is the sunrise / sunset in December in Ironton?

In December, on the first day of the month, sunrise is at 7:39 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 4:38 pm CST.

How long on average sun shines in December in Ironton?

In December, the average sunshine duration in Ironton, Minnesota, is 2.7h.

When is the lowest UV index in Ironton?

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

How high is the UV index in December in Ironton?

In Ironton, 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 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
Ironton, MN

Average temperature in December - Ironton, MN
  • Average high temperature in December: 22.3°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (17.6°F).

  • Average low temperature in December: 11.1°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (3.6°F).

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Average pressure in December
Ironton, MN

Average pressure in December - Ironton, MN
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Ironton, MN

Average wind speed in December - Ironton, MN
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in December
Ironton, MN

Average humidity in December - Ironton, MN
  • Average humidity in December: 88%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (70%).

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Average rainfall in December
Ironton, MN

Average rainfall in December - Ironton, MN
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.71").

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Average rainfall days in December
Ironton, MN

Average rainfall days in December - Ironton, MN
  • Average rainfall days in December: 2.8 days

The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.2 days).

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Average snowfall in December
Ironton, MN

Average snowfall in December - Ironton, MN
  • Average snowfall in December: 8.58"

The month with the highest snowfall is December (8.58").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Ironton, MN

Average snowfall days in December - Ironton, MN
  • Average snowfall days in December: 18.7 days

The month with the highest number of snowfall days is January (20.6 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
Ironton, MN

Average daylight in December / Average sunshine in December - Ironton, MN
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 2h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in December
Ironton, MN

Average sunshine days in December - Ironton, MN
  • Average sunshine days in December: 11.8 days

The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is February (10.1 days).

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Average UV index in December
Ironton, MN

Average UV index in December - Ironton, MN
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in December
Ironton, MN

Average cloud cover in December - Ironton, MN
  • Average cloud cover in December: 73

The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in December
Ironton, MN

Average visibility in December - Ironton, MN
  • Average visibility in December: 4mi

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

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Ironton, Minnesota, USA

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