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
In the transition to December, Bunker Hill observes a drop in the average high-temperature, moving from a cool 51.8°F (11°C) in November to a cold 40.8°F (4.9°C). During December, Bunker Hill records a consistent average nighttime temperature of 29.3°F (-1.5°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In Bunker Hill, Illinois, in December, it is raining for 5.1 days, with typically 0.63" (16mm) of accumulated precipitation. In Bunker Hill, Illinois, during the entire year, the rain falls for 115.4 days and collects up to 13.23" (336mm) of precipitation.Snowfall
Months with snowfall 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
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December in Bunker Hill, Illinois, sunrise is at 7:00 am and sunset at 4:37 pm. On the last day of the month, 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
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December leads to these advisories:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
How cold is December in Bunker Hill?
What is the average humidity in December in Bunker Hill?
How much does it rain in Bunker Hill in December?
How much does it snow in Bunker Hill in December?
What is the month with the shortest days in Bunker Hill?
What is the average length of the day in December in Bunker Hill?
When is the sunrise / sunset in December in Bunker Hill?
How long on average sun shines in December in Bunker Hill?
What are the months with the lowest UV index in Bunker Hill?
What is the UV index intensity in December in Bunker Hill?
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 3min
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 5min
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).
Bunker Hill, Illinois, USA
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