December weather forecastBunker Hill, IL
December
Weather in December
The first month of the winter, December, is still a cold month in Bunker Hill, Illinois, with temperature in the range of an average high of 40.8°F (4.9°C) and an average low of 29.3°F (-1.5°C).Temperature
December's onset brings a reduction in the average high-temperature, from a fresh 51.8°F (11°C) in November to a cold 40.8°F (4.9°C). Throughout December, the average low-temperature records at a freezing cold 29.3°F (-1.5°C).Humidity
In Bunker Hill, the average relative humidity in December is 78%.Rainfall
In Bunker Hill, in December, during 5.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Bunker Hill, during the entire year, the rain falls for 115.4 days and collects up to 13.23" (336mm) of precipitation.Snowfall
Months with snowfall in Bunker Hill are January through March, November and December. In Bunker Hill, in December, snow falls for 3.3 days, with typically accumulated 0.63" (16mm) of snow. In Bunker Hill, during the entire year, snow falls for 17 days and aggregates up to 2.99" (76mm) of snow.Daylight
The month with the shortest days in Bunker Hill is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:47 pm CST.
Sunshine
The average sunshine in December in Bunker Hill is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bunker Hill, IL
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 29.3°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 (23°F).
Average pressure in December
Bunker Hill, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Bunker Hill, IL
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in December
Bunker Hill, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Bunker Hill, IL
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in December
Bunker Hill, IL
- Average rainfall days in December: 5.1 days
The months with the highest number of rainy days are May and July (13.8 days).
The month with the least rainy days is December (5.1 days).
Average snowfall in December
Bunker Hill, IL
- Average snowfall in December: 0.63"
The month with the highest snowfall is January (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Bunker Hill, IL
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (5.1 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
Bunker Hill, IL
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Bunker Hill, IL
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in December
Bunker Hill, IL
- Average UV index in December: 2
The months with the highest UV index are 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
Bunker Hill, IL
- Average cloud cover in December: 50
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 29).
Average visibility in December
Bunker Hill, 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).
