December weather forecast
Glendale, WI

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Weather in December

December, the first month of the winter in Glendale, is also a wintry month, with an average temperature fluctuating between 25°F (-3.9°C) and 32.9°F (0.5°C).

Temperature

Glendale's progression into December includes a drop in the average high-temperature, from a chilly 43.7°F (6.5°C) in November to an icy 32.9°F (0.5°C). Glendale's nighttime temperature in December experiences a slight dip from daytime highs, falling to an average of 25°F (-3.9°C).

Humidity

In December, the average relative humidity is 81%.

Rainfall

December is the month with the least rainfall. Rain falls for 5.5 days and accumulates 0.71" (18mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Glendale, in December, snow falls for 7.7 days, with typically accumulated 1.3" (33mm) of snow. Throughout the year, there are 42.5 snowfall days, and 8.23" (209mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:26 pm CST.

Sunshine

The average sunshine in December is 4h.

UV index

January 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 minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 1 during December leads to these advisories:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Glendale, records 32.9°F (0.5°C), while the low-temperature is 25°F (-3.9°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

What is the driest month?

December is the month with the least rainfall. Rain falls for 5.5 days and accumulates 0.71" (18mm) of precipitation.

How much does it rain in December?

In Glendale, during December, the rain falls for 5.5 days and regularly aggregates up to 0.71" (18mm) of precipitation.

How much does it snow in December?

In Glendale, in December, during 7.7 snowfall days, 1.3" (33mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

How many hours of daylight does Glendale have in December?

In Glendale, the average day length in December is 9h and 4min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:26 pm CST.

How long on average sun shines in December?

In Glendale, the average sunshine duration in December is 4h.

When is the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat from 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
Glendale, WI

Average temperature in December - Glendale, WI
  • Average high temperature in December: 32.9°F

The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in December: 25°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Glendale, WI

Average pressure in December - Glendale, 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 (29.92"Hg).

Average wind speed in December
Glendale, WI

Average wind speed in December - Glendale, WI
  • Average wind speed in December: 11.8mph

The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in December
Glendale, WI

Average humidity in December - Glendale, WI
  • Average humidity in December: 81%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).

Average rainfall in December
Glendale, WI

Average rainfall in December - Glendale, WI
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in December
Glendale, WI

Average rainfall days in December - Glendale, WI
  • Average rainfall days in December: 5.5 days

The months with the highest number of rainy days are May, June and July (15.2 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in December
Glendale, WI

Average snowfall in December - Glendale, WI
  • Average snowfall in December: 1.3"

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

Average snowfall days in December
Glendale, WI

Average snowfall days in December - Glendale, WI
  • Average snowfall days in December: 7.7 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).

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

Average daylight in December / Average sunshine in December - Glendale, WI
  • Average daylight in December: 9h and 1min

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 6min).

  • Average sunshine in December: 4h and 0min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in December
Glendale, WI

Average sunshine days in December - Glendale, WI
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in December
Glendale, WI

Average UV index in December - Glendale, 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 and December (UV index 1).

Average cloud cover in December
Glendale, WI

Average cloud cover in December - Glendale, WI
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in December
Glendale, WI

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

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

Glendale, Wisconsin, USA

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