December weather forecast
Medinah, IL

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Weather in December

December, the first month of the winter in Medinah, is still a cold month, with an average temperature varying between 23.9°F (-4.5°C) and 34°F (1.1°C).

Temperature

A shift in Medinah's weather is observed as November turns into December, with the average high temperature reducing from a chilly 45.5°F (7.5°C) to an icy 34°F (1.1°C). Medinah's nighttime temperature during December is consistently averaged at a freezing cold 23.9°F (-4.5°C).

Humidity

In Medinah, Illinois, the average relative humidity in December is 81%.

Rainfall

The month with the least rainfall is December, when the rain falls for 7.9 days and typically collects 1.14" (29mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Medinah, in December, during 11.1 snowfall days, 2.52" (64mm) of snow is typically accumulated. In Medinah, during the entire year, snow falls for 48.9 days and aggregates up to 15.47" (393mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:01 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:31 pm CST.

Sunshine

The average sunshine in December is 4h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 1 in December leads to these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The average high-temperature and low-temperature during December are 34°F (1.1°C) and 23.9°F (-4.5°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the average humidity in December?

In Medinah, the average relative humidity in December is 81%.

What is the driest month?

December is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.14" (29mm) of precipitation.

How much does it rain in December?

In Medinah, during December, the rain falls for 7.9 days and regularly aggregates up to 1.14" (29mm) of precipitation.

How much does it snow in December?

In Medinah, during December, snow falls for 11.1 days and regularly aggregates up to 2.52" (64mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 11min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:01 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:31 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration is 4h.

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

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

How high is the UV index in December?

In Medinah, Illinois, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Medinah, IL

Average temperature in December - Medinah, IL
  • Average high temperature in December: 34°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in December
Medinah, IL

Average pressure in December - Medinah, IL
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Medinah, IL

Average wind speed in December - Medinah, IL
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in December
Medinah, IL

Average humidity in December - Medinah, IL
  • Average humidity in December: 81%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in December
Medinah, IL

Average rainfall in December - Medinah, IL
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").

Average rainfall days in December
Medinah, IL

Average rainfall days in December - Medinah, IL
  • Average rainfall days in December: 7.9 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).

Average snowfall in December
Medinah, IL

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

The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Medinah, IL

Average snowfall days in December - Medinah, IL
  • Average snowfall days in December: 11.1 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
Medinah, IL

Average daylight in December / Average sunshine in December - Medinah, 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 12min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in December
Medinah, IL

Average sunshine days in December - Medinah, IL
  • Average sunshine days in December: 14.8 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (10.2 days).

Average UV index in December
Medinah, IL

Average UV index in December - Medinah, IL
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Medinah, IL

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

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 33).

Average visibility in December
Medinah, IL

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

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

Medinah, Illinois, USA

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