Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December involves a decrease in temperature, down from a chilly 44.6°F (7°C) in November to a cold 32.4°F (0.2°C). In Poplar Grove, an average nighttime temperature of 22.3°F (-5.4°C) is expected during December.Humidity
In Poplar Grove, Illinois, the average relative humidity in December is 83%.Rainfall
In Poplar Grove, in December, it is raining for 8.2 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 154 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Poplar Grove, in December, during 10.2 snowfall days, 2.6" (66mm) of snow is typically accumulated. Throughout the year, there are 45.3 snowfall days, and 17.28" (439mm) of snow is accumulated.Daylight
December has the shortest days of the year in Poplar Grove, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:23 pm. On the last day of December, in Poplar Grove, sunrise is at 7:24 am and sunset at 4:32 pm CST.
Sunshine
In December, the average sunshine in Poplar Grove 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 value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
How cold is December in Poplar Grove?
What is the average humidity in December in Poplar Grove?
How many days does it rain in December in Poplar Grove?
How many days does it snow in December in Poplar Grove?
What is the month with the shortest days in Poplar Grove?
What is the average length of the day in December in Poplar Grove?
When are sunrise and sunset in December in Poplar Grove?
How long on average sun shines in December in Poplar Grove?
When is the lowest UV index in Poplar Grove?
What is the UV index reading in December in Poplar Grove?
Average temperature in December
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, IL
- Average daylight in December: 9h and 1min
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 6min).
- 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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
Poplar Grove, 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).
Poplar Grove, Illinois, USA
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