December weather forecastAtwood, IL
December
Weather in December
The first month of the winter, December, is still a cold month in Atwood, Illinois, with an average temperature varying between 28.2°F (-2.1°C) and 38.5°F (3.6°C).Temperature
December indicates a shift in the average high-temperature, from November's frosty 49.6°F (9.8°C) to a wintry 38.5°F (3.6°C). The temperature in Atwood lowers to an average of 28.2°F (-2.1°C) during December nights.Humidity
In Atwood, the average relative humidity in December is 79%.Rainfall
In Atwood, Illinois, in December, it is raining for 8.5 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, in Atwood, there are 144.2 rainfall days, and 22.4" (569mm) of precipitation is accumulated.Snowfall
Months with snowfall in Atwood are January through April, November and December. In Atwood, in December, during 5.5 snowfall days, 1.5" (38mm) of snow is typically accumulated. Throughout the year, there are 25.8 snowfall days, and 6.38" (162mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:29 pm. On the last day of December, in Atwood, sunrise is at 7:14 am and sunset at 4:39 pm CST.
Sunshine
The average sunshine in December in Atwood is 4.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Atwood. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Atwood, IL
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Atwood, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Atwood, IL
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Atwood, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Atwood, IL
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is April (2.72").
The driest months (with the least rainfall) are February and September (1.26").
Average rainfall days in December
Atwood, IL
- Average rainfall days in December: 8.5 days
The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Atwood, IL
- Average snowfall in December: 1.5"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Atwood, IL
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (8.2 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
Atwood, 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 36min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Atwood, IL
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Atwood, 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
Atwood, IL
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Atwood, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
