December weather forecast
Heidelberg, MN

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Weather in December

December, the first month of the winter in Heidelberg, is still a freezing cold month, with an average temperature fluctuating between 14.9°F (-9.5°C) and 25.9°F (-3.4°C).

Temperature

As December begins, there is a noticeable decrease in the average high-temperature, falling from an icy 41°F (5°C) in November to a freezing cold 25.9°F (-3.4°C). Heidelberg observes an average nighttime low-temperature of 14.9°F (-9.5°C) during the month of December.

Humidity

In December, the average relative humidity is 88%.

Rainfall

In Heidelberg, during December, the rain falls for 4.5 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 126.1 rainfall days, and 25.55" (649mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Heidelberg. In Heidelberg, in December, during 13.5 snowfall days, 5.35" (136mm) of snow is typically accumulated. Throughout the year, there are 63.7 snowfall days, and 27.48" (698mm) of snow is accumulated.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year in Heidelberg.
On the first day of the month, sunrise is at 7:31 am and sunset at 4:36 pm. On the last day of December, in Heidelberg, sunrise is at 7:50 am and sunset at 4:44 pm CST.

Sunshine

In December, the average sunshine is 3.5h.

UV index

In Heidelberg, Minnesota, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Heidelberg in December?

December temperatures vary between a high-temperature of 25.9°F (-3.4°C) and a low-temperature of 14.9°F (-9.5°C).

What is the average humidity in December in Heidelberg?

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

How much does it rain in Heidelberg in December?

In Heidelberg, in December, it is raining for 4.5 days, with typically 1.5" (38mm) of accumulated precipitation.

How much does it snow in Heidelberg in December?

In Heidelberg, during December, snow falls for 13.5 days and regularly aggregates up to 5.35" (136mm) of snow.

What is the month with the shortest days in Heidelberg?

With an average of 8h and 54min of daylight, December has the shortest days of the year.

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

In Heidelberg, the average day length in December is 8h and 54min.

When is the sunrise / sunset in December in Heidelberg?

In December, on the first day of the month, sunrise is at 7:31 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:44 pm CST.

How long on average sun shines in December in Heidelberg?

The average sunshine duration in December is 3.5h.

What is the UV index reading in December in Heidelberg?

In December, the average daily maximum UV index in Heidelberg, Minnesota, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Heidelberg, MN

Average temperature in December - Heidelberg, MN
  • Average high temperature in December: 25.9°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in December: 14.9°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

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Average pressure in December
Heidelberg, MN

Average pressure in December - Heidelberg, MN
  • Average pressure in December: 30.11"Hg

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Heidelberg, MN

Average wind speed in December - Heidelberg, MN
  • Average wind speed in December: 8.1mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in December
Heidelberg, MN

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

The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (72%).

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Average rainfall in December
Heidelberg, MN

Average rainfall in December - Heidelberg, MN
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in December
Heidelberg, MN

Average rainfall days in December - Heidelberg, MN
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.4 days).

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Average snowfall in December
Heidelberg, MN

Average snowfall in December - Heidelberg, MN
  • Average snowfall in December: 5.35"

The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Heidelberg, MN

Average snowfall days in December - Heidelberg, MN
  • Average snowfall days in December: 13.5 days

The month with the highest number of snowfall days is January (15.3 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
Heidelberg, MN

Average daylight in December / Average sunshine in December - Heidelberg, MN
  • 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: 3h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in December
Heidelberg, MN

Average sunshine days in December - Heidelberg, MN
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in December
Heidelberg, MN

Average UV index in December - Heidelberg, MN
  • Average UV index in December: 2

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

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Average cloud cover in December
Heidelberg, MN

Average cloud cover in December - Heidelberg, MN
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in December
Heidelberg, MN

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

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Heidelberg, Minnesota, USA

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