December weather forecastThompsonville, IL
December
Weather in December
December, the first month of the winter in Thompsonville, is also a frosty month, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 31.5°F (-0.3°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, dropping from a cool 53.8°F (12.1°C) to a chilly 43.7°F (6.5°C). During December, Thompsonville sees a mean low-temperature of 31.5°F (-0.3°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Thompsonville, in December, during 10.3 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 167.2 rainfall days, and 37.68" (957mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Thompsonville, Illinois, in December, during 4.1 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Thompsonville, during the entire year, snow falls for 19.8 days and aggregates up to 6.57" (167mm) of snow.Daylight
The month with the shortest days in Thompsonville is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:52 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:46 pm CST.
Sunshine
In December, the average sunshine is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Thompsonville. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Thompsonville, IL
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 31.5°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Thompsonville, IL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Thompsonville, IL
- Average wind speed in December: 8.9mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Thompsonville, IL
- Average humidity in December: 78%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Thompsonville, IL
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is April (4.92").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Thompsonville, IL
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in December
Thompsonville, IL
- Average snowfall in December: 1.34"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Thompsonville, IL
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is January (6.1 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
Thompsonville, IL
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Thompsonville, IL
- Average sunshine days in December: 17 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in December
Thompsonville, IL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Thompsonville, IL
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Thompsonville, 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).
