December weather forecastBartonville, IL
December
Weather in December
December, the first month of the winter in Bartonville, is still a cold month, with an average temperature ranging between max 36.5°F (2.5°C) and min 26.1°F (-3.3°C).Temperature
With December's arrival, Bartonville's weather changes as the average high-temperature falls from a frosty 48.4°F (9.1°C) in November to a wintry 36.5°F (2.5°C). December's nights observe an average temperature of 26.1°F (-3.3°C).Humidity
In Bartonville, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 6.2 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. In Bartonville, Illinois, during the entire year, the rain falls for 129.2 days and collects up to 17.24" (438mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 5.9 days. Throughout December, 1.18" (30mm) of snow is accumulated. In Bartonville, during the entire year, snow falls for 26.7 days and aggregates up to 7.09" (180mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:41 pm CST.
Sunshine
In Bartonville, the average sunshine in December is 4.4h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In December, the UV index of 2 transforms into the following advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bartonville, IL
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Bartonville, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Bartonville, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Bartonville, IL
- Average humidity in December: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Bartonville, IL
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Bartonville, IL
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in December
Bartonville, IL
- Average snowfall in December: 1.18"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Bartonville, IL
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (9 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
Bartonville, IL
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Bartonville, IL
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Bartonville, 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
Bartonville, IL
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in December
Bartonville, 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).
