December weather forecastBishop Hill, IL
December
Weather in December
December, the first month of the winter in Bishop Hill, is also a wintry month, with an average temperature ranging between max 34.7°F (1.5°C) and min 24.1°F (-4.4°C).Temperature
In Bishop Hill, the average high-temperature in December decreases from a chilly 46.9°F (8.3°C) in November to an icy 34.7°F (1.5°C). The mean low-temperature during December nights is a subzero cold 24.1°F (-4.4°C).Humidity
The average relative humidity in December in Bishop Hill is 82%.Rainfall
The month with the least rainfall in Bishop Hill is December, when the rain falls for 6.5 days and typically collects 0.71" (18mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Bishop Hill, during December, snow falls for 7.4 days and regularly aggregates up to 0.91" (23mm) of snow. Throughout the year, in Bishop Hill, there are 35.5 snowfall days, and 7.95" (202mm) 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 the month, sunrise is at 7:07 am and sunset at 4:32 pm. On the last day of December, in Bishop Hill, sunrise is at 7:25 am and sunset at 4:41 pm CST.
Sunshine
In Bishop Hill, the average sunshine in December is 4.3h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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
Bishop Hill, 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).
