December weather forecastOld Gilchrist, IL
December
Weather in December
The first month of the winter, December, is also a wintry month in Old Gilchrist, Illinois, with temperature in the range of an average high of 35.1°F (1.7°C) and an average low of 24.4°F (-4.2°C).Temperature
With December's arrival, Old Gilchrist's weather changes as the average high-temperature falls from a frosty 47.3°F (8.5°C) in November to an icy 35.1°F (1.7°C). In Old Gilchrist, an average temperature of 24.4°F (-4.2°C) is noted during December nights.Humidity
In December, the average relative humidity is 81%.Rainfall
December is the month with the least rainfall in Old Gilchrist. Rain falls for 5.5 days and accumulates 0.67" (17mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 6.1 days. Throughout December, 0.98" (25mm) of snow is accumulated. Throughout the year, there are 26.3 snowfall days, and 7.64" (194mm) 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 7:09 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:43 pm CST.
Sunshine
In December, the average sunshine is 4.5h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Old Gilchrist, IL
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.4°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 (16.9°F).
Average pressure in December
Old Gilchrist, 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 (29.9"Hg).
Average wind speed in December
Old Gilchrist, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Old Gilchrist, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Old Gilchrist, IL
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in December
Old Gilchrist, IL
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in December
Old Gilchrist, IL
- Average snowfall in December: 0.98"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Old Gilchrist, IL
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (7.8 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
Old Gilchrist, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Old Gilchrist, IL
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in December
Old Gilchrist, 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
Old Gilchrist, IL
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in December
Old Gilchrist, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
