December weather forecast
Germantown, WI

Weather in December

December, the first month of the winter in Germantown, is also a subzero cold month, with an average temperature varying between 31.5°F (-0.3°C) and 22.8°F (-5.1°C).

Temperature

In December, the average high-temperature decreases from a frosty 43.3°F (6.3°C) in November to a subzero cold 31.5°F (-0.3°C). In December, in Germantown, the average low-temperature is 22.8°F (-5.1°C).

Humidity

In Germantown, the average relative humidity in December is 83%.

Rainfall

In Germantown, it is raining for 6.4 days, with typically 1.22" (31mm) of accumulated precipitation. Throughout the year, in Germantown, there are 139.2 rainfall days, and 25.28" (642mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In December, in Germantown, it is snowing for 10.9 days. Throughout December, 3.23" (82mm) of snow is accumulated. In Germantown, during the entire year, snow falls for 48.9 days and aggregates up to 15.35" (390mm) of snow.

Daylight

The month with the shortest days in Germantown is December, with an average of 9h and 2min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:26 pm CST.

Sunshine

In December, the average sunshine is 4h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from 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 Germantown?

In Germantown, Wisconsin, the average relative humidity in December is 83%.

How many days does it rain in December in Germantown?

In Germantown, in December, it is raining for 6.4 days, with typically 1.22" (31mm) of accumulated precipitation.

How many days does it snow in December in Germantown?

In Germantown, Wisconsin, during December, snow falls for 10.9 days and regularly aggregates up to 3.23" (82mm) of snow.

What is the month with the shortest days in Germantown?

The month with the shortest days is December, with an average of 9h and 2min of daylight.

How many hours of daylight does Germantown have in December?

The average day length in December in Germantown is 9h and 2min.

When is the sunrise / sunset in December in Germantown?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:18 pm. On the last day of the month, in Germantown, Wisconsin, sunrise is at 7:24 am and sunset at 4:26 pm CST.

How long on average sun shines in December in Germantown?

The average sunshine duration in December in Germantown, Wisconsin, is 4h.

What are the months with the lowest UV index in Germantown?

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

What is the UV index intensity in December in Germantown?

The average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.

Average temperature in December
Germantown, WI

Average temperature in December - Germantown, WI
  • Average high temperature in December: 31.5°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in December: 22.8°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in December
Germantown, WI

Average pressure in December - Germantown, WI
  • Average pressure in December: 30.08"Hg

The months with the highest atmospheric pressure are January, February and 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
Germantown, WI

Average wind speed in December - Germantown, WI
  • Average wind speed in December: 10.4mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in December
Germantown, WI

Average humidity in December - Germantown, WI
  • Average humidity in December: 83%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in December
Germantown, WI

Average rainfall in December - Germantown, WI
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in December
Germantown, WI

Average rainfall days in December - Germantown, WI
  • Average rainfall days in December: 6.4 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).

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Average snowfall in December
Germantown, WI

Average snowfall in December - Germantown, WI
  • Average snowfall in December: 3.23"

The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Germantown, WI

Average snowfall days in December - Germantown, WI
  • Average snowfall days in December: 10.9 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Germantown, WI

Average daylight in December / Average sunshine in December - Germantown, WI
  • Average daylight in December: 9h and 2min

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 2min).

  • Average sunshine in December: 4h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 3.6h).

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Average sunshine days in December
Germantown, WI

Average sunshine days in December - Germantown, WI
  • Average sunshine days in December: 15.9 days

The month with the most sunshine days is December (15.9 days).
The month with the least sunshine days is April (12 days).

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Average UV index in December
Germantown, WI

Average UV index in December - Germantown, WI
  • 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, November and December (UV index 1).

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Average cloud cover in December
Germantown, WI

Average cloud cover in December - Germantown, WI
  • Average cloud cover in December: 60

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in December
Germantown, WI

Average visibility in December - Germantown, WI
  • Average visibility in December: 6mi

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

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