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
Sun River Terrace in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 47.3°F (8.5°C) to an icy 36.1°F (2.3°C). The month of December records an average low-temperature of 25.7°F (-3.5°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Sun River Terrace, during December, the rain falls for 7 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Sun River Terrace, Illinois, during the entire year, the rain falls for 132 days and collects up to 15.16" (385mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Sun River Terrace, in December, during 7.5 snowfall days, 0.87" (22mm) of snow is typically accumulated. Throughout the year, in Sun River Terrace, there are 36.5 snowfall days, and 5.28" (134mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:57 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:32 pm CST.
Sunshine
The average sunshine in December in Sun River Terrace is 4.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Sun River Terrace in December?
What is the average humidity in December in Sun River Terrace?
How many days does it rain in December in Sun River Terrace?
How much does it snow in Sun River Terrace in December?
What is the month with the shortest days in Sun River Terrace?
How many hours of daylight does Sun River Terrace have in December?
What time are sunrise and sunset in December in Sun River Terrace?
How many hours of sunshine does Sun River Terrace have in December?
When is the lowest UV index in Sun River Terrace?
How high is the UV index in December in Sun River Terrace?
Average temperature in December
Sun River Terrace, IL
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Sun River Terrace, 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
Sun River Terrace, IL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Sun River Terrace, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Sun River Terrace, IL
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in December
Sun River Terrace, IL
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Sun River Terrace, IL
- Average snowfall in December: 0.87"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sun River Terrace, IL
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sun River Terrace, IL
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Sun River Terrace, IL
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Sun River Terrace, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Sun River Terrace, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Sun River Terrace, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Sun River Terrace, Illinois, USA
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