December weather forecastSublette, IL
December
Weather in December
The first month of the winter, December, is still a cold month in Sublette, Illinois, with an average temperature ranging between min 23.5°F (-4.7°C) and max 34°F (1.1°C).Temperature
Sublette's transition into December involves a shift in temperature, receding from a frosty 45.5°F (7.5°C) in November to an icy 34°F (1.1°C). In December, the nighttime temperature in Sublette, Illinois, lowers to an average of 23.5°F (-4.7°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Sublette, in December, during 5.9 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Sublette, during the entire year, the rain falls for 129.4 days and collects up to 16.65" (423mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Sublette, Illinois, in December, snow falls for 8 days, with typically accumulated 1.1" (28mm) of snow. In Sublette, during the entire year, snow falls for 36.1 days and aggregates up to 6.97" (177mm) of snow.Daylight
The month with the shortest days in Sublette is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:36 pm CST.
Sunshine
The average sunshine in December in Sublette is 4.1h.UV index
The months with the lowest UV index in Sublette are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In December, the UV index of 1 transforms into the following advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sublette, IL
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in December: 23.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Sublette, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Sublette, IL
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Sublette, IL
- Average humidity in December: 83%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Sublette, IL
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in December
Sublette, IL
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in December
Sublette, IL
- Average snowfall in December: 1.1"
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sublette, IL
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (10.4 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
Sublette, IL
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 6min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Sublette, IL
- Average sunshine days in December: 18.8 days
The months with the most sunshine days are November and December (18.8 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Sublette, IL
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Sublette, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in December
Sublette, IL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
