December weather forecastHoyleton, IL
December
Weather in December
The first month of the winter, December, is still a chilly month in Hoyleton, Illinois, with temperature in the range of an average high of 42.8°F (6°C) and an average low of 30.7°F (-0.7°C).Temperature
Hoyleton's December weather features a mild decline in high-temperatures, reducing from a fresh 53.1°F (11.7°C) in November to a frosty 42.8°F (6°C). The average temperature during December nights is registered at a subzero cold 30.7°F (-0.7°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Hoyleton, Illinois, in December, during 9.2 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 166.8 rainfall days, and 37.83" (961mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September, November and December. In Hoyleton, Illinois, during December, snow falls for 4.5 days and regularly aggregates up to 1.3" (33mm) of snow. Throughout the year, in Hoyleton, there are 23.2 snowfall days, and 7.87" (200mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Hoyleton.On the first day of December, sunrise is at 6:56 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:46 pm CST.
Sunshine
The average sunshine in December in Hoyleton is 4.8h.UV index
The months with the lowest UV index in Hoyleton are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hoyleton, IL
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Hoyleton, IL
- Average pressure in December: 30.14"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
Hoyleton, IL
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Hoyleton, IL
- Average humidity in December: 78%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Hoyleton, IL
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in December
Hoyleton, IL
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is December (9.2 days).
Average snowfall in December
Hoyleton, IL
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in December
Hoyleton, IL
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Hoyleton, 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 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Hoyleton, IL
- Average sunshine days in December: 17 days
The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Hoyleton, 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 and December (UV index 2).
Average cloud cover in December
Hoyleton, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Hoyleton, 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).
