Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Keensburg's progression into December includes a drop in the average high-temperature, from a fresh 52.9°F (11.6°C) in November to a frosty 42.8°F (6°C). During December, the temperature tends to dip to an average of 31.3°F (-0.4°C) at night.Humidity
In Keensburg, the average relative humidity in December is 78%.Rainfall
In Keensburg, in December, it is raining for 10.3 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, in Keensburg, there are 155.6 rainfall days, and 34.65" (880mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Keensburg, during December, snow falls for 4.2 days and regularly aggregates up to 1.14" (29mm) of snow. Throughout the year, there are 21 snowfall days, and 5.39" (137mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December in Keensburg, sunrise is at 6:50 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:41 pm CST.
Sunshine
In Keensburg, Illinois, the average sunshine in December is 4.6h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Keensburg in December?
What is the average humidity in December in Keensburg?
How many days does it rain in December in Keensburg?
How much does it snow in Keensburg in December?
What is the month with the shortest days in Keensburg?
What is the average length of the day in December in Keensburg?
What time are sunrise and sunset in December in Keensburg?
How long on average sun shines in December in Keensburg?
What are the months with the lowest UV index in Keensburg?
How high is the UV index in December in Keensburg?
Average temperature in December
Keensburg, IL
- Average high temperature in December: 42.8°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 (37.9°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Keensburg, 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
Keensburg, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Keensburg, IL
- Average humidity in December: 78%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Keensburg, IL
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Keensburg, IL
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Keensburg, IL
- Average snowfall in December: 1.14"
The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Keensburg, IL
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Keensburg, IL
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Keensburg, IL
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Keensburg, 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, November and December (UV index 2).
Average cloud cover in December
Keensburg, IL
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in December
Keensburg, 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).
Keensburg, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
