December weather forecastMansfield, IL
December
Weather in December
December, the first month of the winter in Mansfield, is also a wintry month, with an average temperature ranging between max 37.6°F (3.1°C) and min 27.5°F (-2.5°C).Temperature
The onset of December comes with a shift in the average high-temperature, falling from a frosty 49.1°F (9.5°C) in November to a wintry 37.6°F (3.1°C). Nighttime temperature in Mansfield, Illinois, lowers to an average of 27.5°F (-2.5°C) in December.Humidity
The average relative humidity in December in Mansfield is 80%.Rainfall
The month with the least rainfall is December, when the rain falls for 8.4 days and typically collects 1.65" (42mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Mansfield. In Mansfield, in December, during 7.1 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Mansfield, during the entire year, snow falls for 33.9 days and aggregates up to 11.81" (300mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Mansfield.On the first day of the month, sunrise is at 6:57 am and sunset at 4:28 pm. On the last day of December, in Mansfield, sunrise is at 7:16 am and sunset at 4:38 pm CST.
Sunshine
In Mansfield, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index in Mansfield, Illinois, 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 hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be vigilant! The reflective nature of snow can increase 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
Mansfield, 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 (31.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Mansfield, 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
Mansfield, IL
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Mansfield, 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
Mansfield, IL
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in December
Mansfield, IL
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Mansfield, IL
- Average snowfall in December: 2.09"
The month with the highest snowfall is January (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mansfield, IL
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is January (11.4 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
Mansfield, IL
- Average daylight in December: 9h and 24min
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 30min
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
Mansfield, IL
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in December
Mansfield, 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
Mansfield, 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
Mansfield, 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).
