December weather forecast
Ashippun, WI

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Weather in December

The first month of the winter, December, is also a subzero cold month in Ashippun, Wisconsin, with an average temperature fluctuating between 30.7°F (-0.7°C) and 20.8°F (-6.2°C).

Temperature

The move into December indicates a reduction in the average high-temperature, down from November's frosty 43.2°F (6.2°C) to a freezing cold 30.7°F (-0.7°C). Ashippun observes an average nighttime low-temperature of 20.8°F (-6.2°C) during the month of December.

Humidity

The average relative humidity in December is 84%.

Rainfall

The months with the least rainfall in Ashippun are February and December Rain falls for 6.2 days and accumulates 0.59" (15mm) of rain.

Snowfall

January through April, October through December are months with snowfall. In Ashippun, Wisconsin, in December, snow falls for 10.6 days, with typically accumulated 1.18" (30mm) of snow. In Ashippun, during the entire year, snow falls for 47.6 days and aggregates up to 7.4" (188mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:06 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:28 pm CST.

Sunshine

In Ashippun, Wisconsin, the average sunshine in December is 3.8h.

UV index

January, 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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 1 in December leads to these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. When the Sun is at its strongest around midday, find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

How cold is it in Ashippun in December?

An average high-temperature, in December, in Ashippun, is 30.7°F (-0.7°C) and the average low-temperature is 20.8°F (-6.2°C).

What is the average humidity in December in Ashippun?

In Ashippun, Wisconsin, the average relative humidity in December is 84%.

What is the driest month in Ashippun?

February and December are months with the least rain in Ashippun, Wisconsin, when the rain falls for 6.2 days and typically aggregates up to 0.59" (15mm) of rain.

How much does it rain in Ashippun in December?

In December, in Ashippun, Wisconsin, the rain falls for 6.2 days. Throughout December, 0.59" (15mm) of precipitation is accumulated.

How much does it snow in Ashippun in December?

In Ashippun, in December, snow falls for 10.6 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days in Ashippun?

The month with the shortest days in Ashippun, Wisconsin, is December, with an average of 9h and 0min of daylight.

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

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

What time are sunrise and sunset in December in Ashippun?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:19 pm. On the last day of the month, in Ashippun, Wisconsin, sunrise is at 7:25 am and sunset at 4:28 pm CST.

How long on average sun shines in December in Ashippun?

In Ashippun, the average sunshine duration in December is 3.8h.

What is the month with the lowest UV index in Ashippun?

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

What is the UV index intensity in December in Ashippun?

The average daily maximum UV index in December in Ashippun is 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Ashippun, WI

Average temperature in December - Ashippun, WI
  • Average high temperature in December: 30.7°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 20.8°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

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Average pressure in December
Ashippun, WI

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

The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Ashippun, WI

Average wind speed in December - Ashippun, WI
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in December
Ashippun, WI

Average humidity in December - Ashippun, WI
  • Average humidity in December: 84%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in December
Ashippun, WI

Average rainfall in December - Ashippun, WI
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is July (1.85").
The driest months (with the least rainfall) are February and December (0.59").

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Average rainfall days in December
Ashippun, WI

Average rainfall days in December - Ashippun, WI
  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (2.8 days).

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Average snowfall in December
Ashippun, WI

Average snowfall in December - Ashippun, WI
  • Average snowfall in December: 1.18"

The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Ashippun, WI

Average snowfall days in December - Ashippun, WI
  • Average snowfall days in December: 10.6 days

The month with the highest number of snowfall days is January (12.8 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
Ashippun, WI

Average daylight in December / Average sunshine in December - Ashippun, WI
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

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Average sunshine days in December
Ashippun, WI

Average sunshine days in December - Ashippun, WI
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (11.7 days).

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Average UV index in December
Ashippun, WI

Average UV index in December - Ashippun, WI
  • Average UV index in December: 1

The month with the highest UV index is June (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
Ashippun, WI

Average cloud cover in December - Ashippun, WI
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July, August and September (Cloud cover 34).

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Average visibility in December
Ashippun, WI

Average visibility in December - Ashippun, 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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Ashippun, Wisconsin, USA

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