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
Banner's December weather comes with a decrease in average high-temperatures, moving from a frosty 48.9°F (9.4°C) in November to a wintry 36.9°F (2.7°C). In December, the recorded average low-temperature is a freezing cold 26.2°F (-3.2°C).Humidity
In December, the average relative humidity in Banner is 79%.Rainfall
February and December are months with the least rain in Banner when the rain falls for 4 days and typically aggregates up to 0.35" (9mm) of rain.Snowfall
Months with snowfall are January through April, October through December. In Banner, in December, during 3.8 snowfall days, 0.31" (8mm) of snow is typically accumulated. Throughout the year, in Banner, Illinois, there are 19.9 snowfall days, and 3.07" (78mm) 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 December in Banner, sunrise is at 7:04 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:43 pm CST.
Sunshine
In Banner, the average sunshine in December is 4.5h.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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 2 in December transforms into this advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Banner in December?
What is the average humidity in December in Banner?
What is the driest month in Banner?
How much does it rain in Banner in December?
How much does it snow in Banner in December?
What is the month with the shortest days in Banner?
How many hours of daylight does Banner have in December?
What time are sunrise and sunset in December in Banner?
How long on average sun shines in December in Banner?
What is the month with the lowest UV index in Banner?
What is the UV index reading in December in Banner?
Average temperature in December
Banner, IL
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Banner, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Banner, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Banner, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Banner, IL
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is May (1.3").
The driest months (with the least rainfall) are February and December (0.35").
Average rainfall days in December
Banner, IL
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is June (13.2 days).
The month with the least rainy days is January (3 days).
Average snowfall in December
Banner, IL
- Average snowfall in December: 0.31"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Banner, IL
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is January (6.4 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
Banner, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 3min
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
Banner, IL
- Average sunshine days in December: 23.4 days
The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is June (14.4 days).
Average UV index in December
Banner, 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
Banner, IL
- Average cloud cover in December: 52
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
Banner, 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).
Banner, Illinois, USA
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