December weather forecast
Sheppard, WI

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Weather in December

The first month of the winter, December, is also a subzero cold month in Sheppard, Wisconsin, with an average temperature varying between 26.4°F (-3.1°C) and 15.4°F (-9.2°C).

Temperature

During Sheppard's transition into December, the average high-temperature lessens, moving from an icy 40.6°F (4.8°C) in November to a subzero cold 26.4°F (-3.1°C). During December, the nighttime temperature in Sheppard, Wisconsin, averages of 15.4°F (-9.2°C).

Humidity

In Sheppard, Wisconsin, the average relative humidity in December is 88%.

Rainfall

In Sheppard, during December, the rain falls for 4 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Sheppard, during the entire year, the rain falls for 120.8 days and collects up to 16.34" (415mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Sheppard, in December, during 13.4 snowfall days, 2.83" (72mm) of snow is typically accumulated. In Sheppard, during the entire year, snow falls for 62.1 days and aggregates up to 13.11" (333mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:25 pm. On the last day of December, in Sheppard, sunrise is at 7:38 am and sunset at 4:34 pm CST.

Sunshine

The average sunshine in December is 3.2h.

UV index

The months with the lowest UV index in Sheppard are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 in December transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Sheppard?

In Sheppard, 26.4°F (-3.1°C) is the average high-temperature and 15.4°F (-9.2°C) is the average low-temperature during December.

What is the average humidity in December in Sheppard?

In December, the average relative humidity in Sheppard, Wisconsin, is 88%.

How many days does it rain in December in Sheppard?

In December, in Sheppard, Wisconsin, the rain falls for 4 days. Throughout December, 0.79" (20mm) of precipitation is accumulated.

How much does it snow in Sheppard in December?

In Sheppard, during December, snow falls for 13.4 days and regularly aggregates up to 2.83" (72mm) of snow.

What is the month with the shortest days in Sheppard?

The month with the shortest days in Sheppard, Wisconsin, is December, with an average of 8h and 54min of daylight.

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

In Sheppard, the average day length in December is 8h and 56min.

When are sunrise and sunset in December in Sheppard?

On the first day of December in Sheppard, sunrise is at 7:19 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:34 pm CST.

How long on average sun shines in December in Sheppard?

In Sheppard, the average sunshine duration in December is 3.2h.

When is the lowest UV index in Sheppard?

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

How high is the UV index in December in Sheppard?

In December, the average daily maximum UV index in Sheppard is 1. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
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
Sheppard, WI

Average temperature in December - Sheppard, WI
  • Average high temperature in December: 26.4°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in December: 15.4°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

Average pressure in December
Sheppard, WI

Average pressure in December - Sheppard, WI
  • Average pressure in December: 30.1"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in December
Sheppard, WI

Average wind speed in December - Sheppard, WI
  • Average wind speed in December: 8.6mph

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 (6.5mph).

Average humidity in December
Sheppard, WI

Average humidity in December - Sheppard, WI
  • Average humidity in December: 88%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December
Sheppard, WI

Average rainfall in December - Sheppard, WI
  • Average rainfall in December: 0.79"

The wettest month (with the highest rainfall) is June (2.91").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in December
Sheppard, WI

Average rainfall days in December - Sheppard, WI
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in December
Sheppard, WI

Average snowfall in December - Sheppard, WI
  • Average snowfall in December: 2.83"

The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Sheppard, WI

Average snowfall days in December - Sheppard, WI
  • Average snowfall days in December: 13.4 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Sheppard, WI
  • 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 1min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Sheppard, WI

Average sunshine days in December - Sheppard, WI
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (9.8 days).

Average UV index in December
Sheppard, WI

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in December
Sheppard, WI

Average cloud cover in December - Sheppard, WI
  • Average cloud cover in December: 67

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Sheppard, WI

Average visibility in December - Sheppard, WI
  • Average visibility in December: 5mi

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

Sheppard, Wisconsin, USA

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