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
Somonauk experiences a temperature shift at the start of December, with average high-temperatures adjusting from a frosty 45.5°F (7.5°C) in November to a cold 34.2°F (1.2°C). In December, Somonauk encounters an average low-temperature of 23.9°F (-4.5°C) during the night.Humidity
The average relative humidity in December in Somonauk is 82%.Rainfall
In December, in Somonauk, the rain falls for 8 days. Throughout December, 1.77" (45mm) of precipitation is accumulated. Throughout the year, in Somonauk, Illinois, there are 162.1 rainfall days, and 33.54" (852mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Somonauk, in December, during 8.9 snowfall days, 2.6" (66mm) of snow is typically accumulated. In Somonauk, during the entire year, snow falls for 43.6 days and aggregates up to 16.73" (425mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:25 pm. On the last day of December, in Somonauk, sunrise is at 7:21 am and sunset at 4:34 pm CST.
Sunshine
In Somonauk, the average sunshine in December is 4.1h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is December in Somonauk?
What is the average humidity in December in Somonauk?
How much does it rain in Somonauk in December?
How much does it snow in Somonauk in December?
What is the month with the shortest days in Somonauk?
What is the average length of the day in December in Somonauk?
When are sunrise and sunset in December in Somonauk?
How many hours of sunshine does Somonauk have in December?
What are the months with the lowest UV index in Somonauk?
What is the UV index intensity in December in Somonauk?
Average temperature in December
Somonauk, IL
- Average high temperature in December: 34.2°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in December
Somonauk, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Somonauk, IL
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Somonauk, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Somonauk, IL
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in December
Somonauk, IL
- Average rainfall days in December: 8 days
The months with the highest number of rainy days are June and July (19.3 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in December
Somonauk, IL
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Somonauk, IL
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Somonauk, IL
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
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 June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Somonauk, IL
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in December
Somonauk, IL
- Average UV index in December: 1
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Somonauk, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in December
Somonauk, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Somonauk, Illinois, USA
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