December weather forecast
Spring Green, WI

Weather in December

December, the first month of the winter in Spring Green, is also a subzero cold month, with an average temperature fluctuating between 18.9°F (-7.3°C) and 29.3°F (-1.5°C).

Temperature

In Spring Green, Wisconsin, the average high-temperature in December decreases from a wintry 42.6°F (5.9°C) in November to a freezing cold 29.3°F (-1.5°C). The average low-temperature, in December, is 18.9°F (-7.3°C).

Humidity

In December, the average relative humidity in Spring Green is 85%.

Rainfall

In Spring Green, during December, the rain falls for 5.4 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, in Spring Green, Wisconsin, there are 122.9 rainfall days, and 17.76" (451mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Spring Green, Wisconsin. In December, it is snowing for 10.5 days. Throughout December, 1.77" (45mm) of snow is accumulated. Throughout the year, in Spring Green, there are 51.6 snowfall days, and 12.17" (309mm) of snow is accumulated.

Daylight

With an average of 9h and 3min of daylight, December has the shortest days of the year in Spring Green.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:34 pm CST.

Sunshine

In December, the average sunshine in Spring Green is 3.7h.

UV index

January, 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 minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 Spring Green?

In December, the average relative humidity in Spring Green is 85%.

How much does it rain in Spring Green in December?

In Spring Green, Wisconsin, in December, during 5.4 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How much does it snow in Spring Green in December?

In Spring Green, Wisconsin, in December, during 10.5 snowfall days, 1.77" (45mm) of snow is typically accumulated.

What is the month with the shortest days in Spring Green?

With an average of 9h and 3min of daylight, December has the shortest days of the year in Spring Green.

How many hours of daylight does Spring Green have in December?

In December, the average day length is 9h and 3min.

When is the sunrise / sunset in December in Spring Green?

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 4:26 pm. On the last day of the month, in Spring Green, Wisconsin, sunrise is at 7:31 am and sunset at 4:34 pm CST.

How many hours of sunshine does Spring Green have in December?

In Spring Green, Wisconsin, the average sunshine duration in December is 3.7h.

When is the lowest UV index in Spring Green?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Spring Green, Wisconsin.

What is the UV index intensity in December in Spring Green?

In Spring Green, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.

Average temperature in December
Spring Green, WI

Average temperature in December - Spring Green, WI
  • Average high temperature in December: 29.3°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in December: 18.9°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (10°F).

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Average pressure in December
Spring Green, WI

Average pressure in December - Spring Green, WI
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Spring Green, WI

Average wind speed in December - Spring Green, WI
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in December
Spring Green, WI

Average humidity in December - Spring Green, WI
  • Average humidity in December: 85%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in December
Spring Green, WI

Average rainfall in December - Spring Green, WI
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is July (2.32").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in December
Spring Green, WI

Average rainfall days in December - Spring Green, WI
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (3.2 days).

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Average snowfall in December
Spring Green, WI

Average snowfall in December - Spring Green, WI
  • Average snowfall in December: 1.77"

The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Spring Green, WI

Average snowfall days in December - Spring Green, WI
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is February (13 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
Spring Green, WI

Average daylight in December / Average sunshine in December - Spring Green, WI
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 20min).
The month with the shortest days is December (Average daylight: 9h and 3min).

  • Average sunshine in December: 3.7h

The month with the most sunshine is July (Average sunshine: 9.9h).
The month with the least sunshine is January (Average sunshine: 3.2h).

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Average sunshine days in December
Spring Green, WI

Average sunshine days in December - Spring Green, WI
  • Average sunshine days in December: 17.3 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in December
Spring Green, WI

Average UV index in December - Spring Green, WI
  • 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
Spring Green, WI

Average cloud cover in December - Spring Green, WI
  • Average cloud cover in December: 63

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in December
Spring Green, WI

Average visibility in December - Spring Green, WI
  • Average visibility in December: 6mi

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

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