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
The arrival of December signals a shift in temperature, down from a frosty 49.1°F (9.5°C) in November to a cold 37.6°F (3.1°C). Sidney, during the month of December, experiences an average low-temperature of 27.7°F (-2.4°C).Humidity
In December, the average relative humidity in Sidney is 80%.Rainfall
In Sidney, Illinois, in December, it is raining for 7 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, in Sidney, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Sidney, Illinois, in December, snow falls for 5.9 days, with typically accumulated 1.1" (28mm) of snow. In Sidney, during the entire year, snow falls for 27.1 days and aggregates up to 5.91" (150mm) of snow.Daylight
The month with the shortest days in Sidney, Illinois, is December, with an average of 9h and 24min of daylight.On the first day of December in Sidney, sunrise is at 6:55 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:37 pm CST.
Sunshine
The average sunshine in December is 4.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
How cold does it get in Sidney in December?
What is the average humidity in December in Sidney?
How many days does it rain in December in Sidney?
How much does it snow in Sidney in December?
What is the month with the shortest days in Sidney?
What is the average length of the day in December in Sidney?
When are sunrise and sunset in December in Sidney?
How many hours of sunshine does Sidney have in December?
What is the month with the lowest UV index in Sidney?
How high is the UV index in December in Sidney?
Average temperature in December
Sidney, IL
- Average high temperature in December: 37.6°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 (31.8°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Sidney, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Sidney, IL
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Sidney, IL
- Average humidity in December: 80%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Sidney, IL
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in December
Sidney, IL
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).
Average snowfall in December
Sidney, IL
- Average snowfall in December: 1.1"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sidney, IL
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (8.7 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
Sidney, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Sidney, IL
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Sidney, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Sidney, IL
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in December
Sidney, 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).
Sidney, Illinois, USA
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