December weather forecastPlainville, IL
December
Weather in December
The first month of the winter, December, is also an icy month in Plainville, Illinois, with temperature in the range of an average low of 27.1°F (-2.7°C) and an average high of 39.6°F (4.2°C).Temperature
As Plainville, Illinois, enters December, the average high-temperature decreases from the a fresh 51.4°F (10.8°C) of November to a wintry 39.6°F (4.2°C). In the month of December, an average of 27.1°F (-2.7°C) marks the low-temperature in Plainville.Humidity
In December, the average relative humidity in Plainville is 77%.Rainfall
In Plainville, Illinois, in December, it is raining for 6.9 days, with typically 1.34" (34mm) of accumulated precipitation. In Plainville, Illinois, during the entire year, the rain falls for 136 days and collects up to 25" (635mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Plainville, Illinois, in December, snow falls for 4.2 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, in Plainville, there are 20 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Plainville, Illinois.On the first day of December, sunrise is at 7:07 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:50 pm CST.
Sunshine
In December, the average sunshine is 4.9h.UV index
The months with the lowest UV index in Plainville are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To cut down UV radiation exposure by about half, sport a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Plainville, IL
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Plainville, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Plainville, IL
- Average wind speed in December: 9.5mph
The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in December
Plainville, IL
- Average humidity in December: 77%
The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Plainville, IL
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in December
Plainville, IL
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Plainville, IL
- Average snowfall in December: 1.26"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Plainville, IL
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.2 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
Plainville, IL
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Plainville, IL
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in December
Plainville, 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
Plainville, IL
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Plainville, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
