December weather forecast
Winslow, IL

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Weather in December

The first month of the winter, December, is also a subzero cold month in Winslow, Illinois, with temperature in the range of an average low of 21.4°F (-5.9°C) and an average high of 31.6°F (-0.2°C).

Temperature

As Winslow, Illinois, enters December, the average high-temperature decreases from the a frosty 43.9°F (6.6°C) of November to a subzero cold 31.6°F (-0.2°C). In Winslow, the expected average low-temperature for December is a still freezing cold 21.4°F (-5.9°C).

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Winslow, in December, it is raining for 7.4 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, in Winslow, there are 145.9 rainfall days, and 22.8" (579mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Winslow, in December, snow falls for 11.3 days, with typically accumulated 2.52" (64mm) of snow. Throughout the year, in Winslow, Illinois, there are 50.1 snowfall days, and 13.62" (346mm) of snow is accumulated.

Daylight

The month with the shortest days in Winslow, Illinois, is December, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:36 pm CST.

Sunshine

In Winslow, 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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Winslow?

Winslow in December has an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 21.4°F (-5.9°C).

What is the average humidity in December in Winslow?

The average relative humidity in December is 83%.

How many days does it rain in December in Winslow?

In December, the rain falls for 7.4 days. Throughout December, 1.1" (28mm) of precipitation is accumulated.

How many days does it snow in December in Winslow?

In December, in Winslow, it is snowing for 11.3 days. Throughout December, 2.52" (64mm) of snow is accumulated.

What is the month with the shortest days in Winslow?

The month with the shortest days in Winslow is December, with an average of 9h and 6min of daylight.

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

The average day length in December in Winslow, Illinois, is 9h and 8min.

When are sunrise and sunset in December in Winslow?

On the first day of December in Winslow, Illinois, sunrise is at 7:09 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:36 pm CST.

How long on average sun shines in December in Winslow?

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

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

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

How high is the UV index in December in Winslow?

In December, the average daily maximum UV index in Winslow is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Winslow, IL

Average temperature in December - Winslow, IL
  • Average high temperature in December: 31.6°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 (24.8°F).

  • Average low temperature in December: 21.4°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

Average pressure in December
Winslow, IL

Average pressure in December - Winslow, IL
  • 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 (29.91"Hg).

Average wind speed in December
Winslow, IL

Average wind speed in December - Winslow, IL
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in December
Winslow, IL

Average humidity in December - Winslow, IL
  • Average humidity in December: 83%

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

Average rainfall in December
Winslow, IL

Average rainfall in December - Winslow, IL
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in December
Winslow, IL

Average rainfall days in December - Winslow, IL
  • Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (5.3 days).

Average snowfall in December
Winslow, IL

Average snowfall in December - Winslow, IL
  • Average snowfall in December: 2.52"

The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Winslow, IL

Average snowfall days in December - Winslow, IL
  • Average snowfall days in December: 11.3 days

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Winslow, IL

Average daylight in December / Average sunshine in December - Winslow, IL
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
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: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in December
Winslow, IL

Average sunshine days in December - Winslow, IL
  • Average sunshine days in December: 15.3 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in December
Winslow, IL

Average UV index in December - Winslow, IL
  • 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 and December (UV index 1).

Average cloud cover in December
Winslow, IL

Average cloud cover in December - Winslow, IL
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in December
Winslow, IL

Average visibility in December - Winslow, IL
  • Average visibility in December: 6mi

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

Winslow, Illinois, USA

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