December weather forecastMount Palatine, IL
December
Weather in December
The first month of the winter, December, is still a cold month in Mount Palatine, Illinois, with an average temperature varying between 35.6°F (2°C) and 25.3°F (-3.7°C).Temperature
The transition into December indicates a reduction in the average high-temperature, down to an icy 35.6°F (2°C) from November's frosty 47.3°F (8.5°C). Mount Palatine's average low-temperature in the month of December is recorded at a subzero cold 25.3°F (-3.7°C).Humidity
In December, the average relative humidity is 81%.Rainfall
The months with the least rainfall in Mount Palatine, Illinois, are January and December Rain falls for 7.5 days and accumulates 1.57" (40mm) of rain.Snowfall
January through April, October through December are months with snowfall in Mount Palatine. In December, in Mount Palatine, it is snowing for 7 days. Throughout December, 2.28" (58mm) of snow is accumulated. Throughout the year, there are 36.7 snowfall days, and 14.09" (358mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:37 pm CST.
Sunshine
In Mount Palatine, the average sunshine in December is 4.2h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. 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
Mount Palatine, IL
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in December
Mount Palatine, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Mount Palatine, IL
- Average wind speed in December: 9.7mph
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
Mount Palatine, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Mount Palatine, IL
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days in December
Mount Palatine, IL
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Mount Palatine, IL
- Average snowfall in December: 2.28"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mount Palatine, IL
- Average snowfall days in December: 7 days
The month with the highest number of snowfall days is January (11.2 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
Mount Palatine, IL
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Mount Palatine, IL
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Mount Palatine, IL
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Mount Palatine, IL
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in December
Mount Palatine, IL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
