December weather forecastCambridge, IL
December
Weather in December
December, the first month of the winter in Cambridge, is also an icy month, with an average temperature varying between 24.1°F (-4.4°C) and 34.7°F (1.5°C).Temperature
During the transition into December, Cambridge observes a decrease in the average high-temperature, falling from a frosty 46.9°F (8.3°C) in November to a wintry 34.7°F (1.5°C). Cambridge in December anticipates an average nighttime temperature of 24.1°F (-4.4°C).Humidity
The average relative humidity in December is 82%.Rainfall
The month with the least rainfall in Cambridge is December, when the rain falls for 6.5 days and typically collects 0.71" (18mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, in Cambridge, it is snowing for 7.4 days. Throughout December, 0.91" (23mm) of snow is accumulated. In Cambridge, Illinois, during the entire year, snow falls for 35.5 days and aggregates up to 7.95" (202mm) of snow.Daylight
December has the shortest days of the year in Cambridge, with an average of 9h and 18min of daylight.On the first day of December in Cambridge, Illinois, sunrise is at 7:07 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:41 pm CST.
Sunshine
In December, the average sunshine in Cambridge, Illinois, is 4.3h.UV index
In December, the average daily maximum UV index in Cambridge is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cambridge, IL
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Cambridge, IL
- Average pressure in December: 30.11"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
Cambridge, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Cambridge, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Cambridge, IL
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in December
Cambridge, IL
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4 days).
Average snowfall in December
Cambridge, IL
- Average snowfall in December: 0.91"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Cambridge, IL
- Average snowfall days in December: 7.4 days
The month with the highest number of snowfall days is January (10.5 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
Cambridge, 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 18min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Cambridge, IL
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in December
Cambridge, IL
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Cambridge, IL
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in December
Cambridge, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
