December weather forecastBartelso, IL
December
Weather in December
The first month of the winter, December, is still a cold month in Bartelso, Illinois, with an average temperature fluctuating between 41.9°F (5.5°C) and 30°F (-1.1°C).Temperature
Stepping into December, Bartelso observes a temperature decline, with the average high falling from November's fresh 52.5°F (11.4°C) to a cold 41.9°F (5.5°C). An average minimum temperature of 30°F (-1.1°C) marks the month of December.Humidity
The average relative humidity in December is 77%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. Throughout the year, there are 157.2 rainfall days, and 36.18" (919mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In December, in Bartelso, it is snowing for 4 days. Throughout December, 1.22" (31mm) of snow is accumulated. Throughout the year, there are 22.4 snowfall days, and 7.83" (199mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:47 pm CST.
Sunshine
The average sunshine in December is 4.8h.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 rays for the average person.Note: The UV index of 2 during December leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bartelso, IL
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Bartelso, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Bartelso, IL
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Bartelso, IL
- Average humidity in December: 77%
The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Bartelso, IL
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Bartelso, IL
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Bartelso, IL
- Average snowfall in December: 1.22"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Bartelso, IL
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (7.5 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
Bartelso, IL
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Bartelso, IL
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
Bartelso, IL
- Average UV index in December: 2
The months with the highest UV index are May, 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
Bartelso, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Bartelso, 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).
