December weather forecast
Caledonia, MN

Weather in December

The first month of the winter, December, is also a subzero cold month in Caledonia, Minnesota, with average temperature varying between 17.1°F (-8.3°C) and 27.9°F (-2.3°C).

Temperature

In December, the average high-temperature decreases, from a cold 41.9°F (5.5°C) in November, to a freezing cold 27.9°F (-2.3°C). In December, the average low-temperature is 17.1°F (-8.3°C).

Humidity

The average relative humidity in Caledonia is 87%.

Rainfall

In December, in Caledonia, the rain falls for 4.7 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Caledonia, during the entire year, the rain falls for 130.5 days and collects up to 26.5" (673mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Caledonia. In Caledonia, during December, snow falls for 11.1 days and regularly aggregates up to 4.37" (111mm) of snow. Throughout the year, there are 51.4 snowfall days, and 22.2" (564mm) of snow is accumulated.

Daylight

With an average of 9h of daylight, December has the shortest days of the year in Caledonia.

Sunshine

In Caledonia, Minnesota, the average sunshine is 3.7h.

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 value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 1 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. 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 average humidity in December in Caledonia?

In December, the average relative humidity in Caledonia, Minnesota, is 87%.

How many days does it rain in December in Caledonia?

In Caledonia, Minnesota, in December, during 4.7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

How many days does it snow in December in Caledonia?

In Caledonia, in December, during 11.1 snowfall days, 4.37" (111mm) of snow is typically accumulated.

What is the month with the shortest days in Caledonia?

With an average of 9h of daylight, December has the shortest days of the year in Caledonia, Minnesota.

What is the average length of the day in December in Caledonia?

In Caledonia, the average length of the day in December is 9h.

How long on average sun shines in December in Caledonia?

The average sunshine in December in Caledonia is 3.7h.

When is the lowest UV index in Caledonia?

Months with the lowest UV index in Caledonia, Minnesota, are January, February, November and December, with an average maximum UV index of 1.

How high is the UV index in December in Caledonia?

In December, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.

Average temperature in December
Caledonia, MN

Average temperature in December - Caledonia, MN
  • Average high temperature in December: 27.9°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (21.7°F).

  • Average low temperature in December: 17.1°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (8.8°F).

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Average pressure in December
Caledonia, MN

Average pressure in December - Caledonia, MN
  • Average pressure in December: 30.1"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is June (29.89").

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Average wind speed in December
Caledonia, MN

Average wind speed in December - Caledonia, MN
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in December
Caledonia, MN

Average humidity in December - Caledonia, MN
  • Average humidity in December: 87%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in December
Caledonia, MN

Average rainfall in December - Caledonia, MN
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is June (4.61").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in December
Caledonia, MN

Average rainfall days in December - Caledonia, MN
  • Average rainfall days in December: 4.7 days

The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (3 days).

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Average snowfall in December
Caledonia, MN

Average snowfall in December - Caledonia, MN
  • Average snowfall in December: 4.37"

The month with the highest snowfall is February (5.71").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Caledonia, MN

Average snowfall days in December - Caledonia, MN
  • Average snowfall days in December: 11.1 days

The month with the highest number of snowfall days is January (12 days).
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
Caledonia, MN

Average daylight in December / Average sunshine in December - Caledonia, MN
  • Average daylight in December: 9h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in December: 3.7h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.4h).

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Average sunshine days in December
Caledonia, MN

Average sunshine days in December - Caledonia, MN
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is June (9.8 days).

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Average UV index in December
Caledonia, MN

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

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

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Average cloud cover in December
Caledonia, MN

Average cloud cover in December - Caledonia, MN
  • Average cloud cover in December: 61

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in December
Caledonia, MN

Average visibility in December - Caledonia, MN
  • Average visibility in December: 5mi

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

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