December weather forecastOglesby, IL
December
Weather in December
December, the first month of the winter in Oglesby, is also an icy month, with an average temperature varying between 24.6°F (-4.1°C) and 34.9°F (1.6°C).Temperature
Start of December brings a shift in the average high-temperature, falling from November's frosty 46.8°F (8.2°C) to an icy 34.9°F (1.6°C). Oglesby observes an average low-temperature of 24.6°F (-4.1°C) during December nights.Humidity
The average relative humidity in December is 82%.Rainfall
In Oglesby, in December, during 7.8 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, in Oglesby, Illinois, there are 151.4 rainfall days, and 30.67" (779mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Oglesby. In Oglesby, Illinois, in December, during 7.5 snowfall days, 2.2" (56mm) of snow is typically accumulated. Throughout the year, there are 40.5 snowfall days, and 15.16" (385mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:37 pm CST.
Sunshine
In December, the average sunshine is 4.2h.UV index
The months with the lowest UV index in Oglesby are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Oglesby, IL
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in December: 24.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in December
Oglesby, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Oglesby, IL
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Oglesby, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Oglesby, IL
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days in December
Oglesby, IL
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in December
Oglesby, IL
- Average snowfall in December: 2.2"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Oglesby, IL
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (12.1 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
Oglesby, IL
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Oglesby, IL
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in December
Oglesby, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Oglesby, IL
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in December
Oglesby, 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).
