Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With December's arrival, Northlake sees a decrease in average high-temperatures, moving from a chilly 45.9°F (7.7°C) in November to a wintry 34.7°F (1.5°C). December witnesses an average nighttime temperature of 25.2°F (-3.8°C).Humidity
In December, the average relative humidity in Northlake 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
Months with snowfall are January through May, October through December. In Northlake, in December, during 9.9 snowfall days, 2.24" (57mm) of snow is typically accumulated. Throughout the year, in Northlake, there are 45.8 snowfall days, and 14.25" (362mm) of snow is accumulated.Daylight
The month with the shortest days in Northlake is December, with an average of 9h and 12min of daylight.On the first day of December in Northlake, sunrise is at 7:00 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:30 pm CST.
Sunshine
In Northlake, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index in Northlake, Illinois, are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
How cold is it in Northlake in December?
What is the average humidity in December in Northlake?
What is the driest month in Northlake?
How much does it rain in Northlake in December?
How many days does it snow in December in Northlake?
What is the month with the shortest days in Northlake?
What is the average length of the day in December in Northlake?
What time are sunrise and sunset in December in Northlake?
How many hours of sunshine does Northlake have in December?
What are the months with the lowest UV index in Northlake?
How high is the UV index in December in Northlake?
Average temperature in December
Northlake, IL
- Average high temperature in December: 34.7°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 (28.8°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Northlake, 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
Northlake, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Northlake, IL
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Northlake, 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
Northlake, IL
- Average rainfall days in December: 7.9 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Northlake, IL
- Average snowfall in December: 2.24"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Northlake, IL
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Northlake, 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 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Northlake, IL
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in December
Northlake, 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
Northlake, IL
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Northlake, IL
- 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).
Northlake, Illinois, USA
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