December weather forecastGarden Prairie, IL
December
Weather in December
The first month of the winter, December, is also an icy month in Garden Prairie, Illinois, with an average temperature varying between 22.3°F (-5.4°C) and 32.4°F (0.2°C).Temperature
As November transitions to December, the average high-temperature falls from a chilly 44.6°F (7°C) to a wintry 32.4°F (0.2°C). The average nighttime temperature lowers to a subzero cold 22.3°F (-5.4°C) throughout December.Humidity
The average relative humidity in December is 83%.Rainfall
In Garden Prairie, in December, during 8.2 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Garden Prairie, during the entire year, the rain falls for 154 days and collects up to 30.47" (774mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Garden Prairie, Illinois, in December, snow falls for 10.2 days, with typically accumulated 2.6" (66mm) of snow. In Garden Prairie, during the entire year, snow falls for 45.3 days and aggregates up to 17.28" (439mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:32 pm CST.
Sunshine
The average sunshine in December is 4h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Garden Prairie, IL
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in December
Garden Prairie, IL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Garden Prairie, IL
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Garden Prairie, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Garden Prairie, IL
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is June (4.09").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in December
Garden Prairie, IL
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in December
Garden Prairie, IL
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (5.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Garden Prairie, IL
- Average snowfall days in December: 10.2 days
The month with the highest number of snowfall days is January (12.6 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
Garden Prairie, IL
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Garden Prairie, IL
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in December
Garden Prairie, IL
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Garden Prairie, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in December
Garden Prairie, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
