December weather forecast
Reedsburg, WI

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Weather in December

The first month of the winter, December, is also a subzero cold month in Reedsburg, Wisconsin, with an average temperature varying between 28.8°F (-1.8°C) and 18.3°F (-7.6°C).

Temperature

As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a wintry 41.7°F (5.4°C) to a subzero cold 28.8°F (-1.8°C). Throughout December, Reedsburg encounters an average temperature drop to 18.3°F (-7.6°C).

Humidity

The average relative humidity in December is 86%.

Rainfall

In December, the rain falls for 4.2 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 117.9 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Reedsburg, during December, snow falls for 10.9 days and regularly aggregates up to 2.95" (75mm) of snow. Throughout the year, there are 54.1 snowfall days, and 17.09" (434mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:33 pm CST.

Sunshine

In Reedsburg, the average sunshine in December is 3.5h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 1 transforms into these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 28.8°F (-1.8°C) and a low-temperature of 18.3°F (-7.6°C).

What is the average humidity in December?

In December, the average relative humidity is 86%.

How many days does it rain in December?

In Reedsburg, during December, the rain falls for 4.2 days and regularly aggregates up to 0.94" (24mm) of precipitation.

How much does it snow in December?

In Reedsburg, during December, snow falls for 10.9 days and regularly aggregates up to 2.95" (75mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 0min of daylight.

How many hours of daylight does Reedsburg have in December?

In Reedsburg, the average day length in December is 9h and 1min.

What time are sunrise and sunset in December in Reedsburg?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:33 pm CST.

How many hours of sunshine does Reedsburg have in December?

In Reedsburg, the average sunshine duration in December is 3.5h.

When is the lowest UV index?

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

What is the UV index reading in December?

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 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
Reedsburg, WI

Average temperature in December - Reedsburg, WI
  • Average high temperature in December: 28.8°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in December: 18.3°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

Average pressure in December
Reedsburg, WI

Average pressure in December - Reedsburg, 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).

Average wind speed in December
Reedsburg, WI

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

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in December
Reedsburg, WI

Average humidity in December - Reedsburg, WI
  • Average humidity in December: 86%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December
Reedsburg, WI

Average rainfall in December - Reedsburg, WI
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days in December
Reedsburg, WI

Average rainfall days in December - Reedsburg, WI
  • Average rainfall days in December: 4.2 days

The months with the highest number of rainy days are May and June (16.1 days).
The month with the least rainy days is February (2.5 days).

Average snowfall in December
Reedsburg, WI

Average snowfall in December - Reedsburg, WI
  • Average snowfall in December: 2.95"

The month with the highest snowfall is February (4.37").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Reedsburg, WI

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

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 3h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Reedsburg, WI

Average sunshine days in December - Reedsburg, WI
  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.5 days).

Average UV index in December
Reedsburg, WI

Average UV index in December - Reedsburg, 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, February, November and December (UV index 1).

Average cloud cover in December
Reedsburg, WI

Average cloud cover in December - Reedsburg, WI
  • Average cloud cover in December: 65

The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July, August and September (Cloud cover 36).

Average visibility in December
Reedsburg, WI

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

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

Reedsburg, Wisconsin, USA

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