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
As November transitions into December, Berwick sees a drop in the average high-temperature, transitioning from a chilly 47.5°F (8.6°C) to a cold 35.8°F (2.1°C). Berwick throughout December, records an average low-temperature of 25°F (-3.9°C).Humidity
In Berwick, the average relative humidity in December is 81%.Rainfall
January and December are months with the least rain in Berwick when the rain falls for 6.8 days and typically aggregates up to 0.59" (15mm) of rain.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 7.1 days. Throughout December, 0.75" (19mm) of snow is accumulated. In Berwick, Illinois, during the entire year, snow falls for 32.2 days and aggregates up to 4.8" (122mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Berwick, Illinois.On the first day of the month, sunrise is at 7:07 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:44 pm CST.
Sunshine
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 in Berwick. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Berwick?
What is the average humidity in December in Berwick?
What is the driest month in Berwick?
How much does it rain in Berwick in December?
How much does it snow in Berwick in December?
What is the month with the shortest days in Berwick?
What is the average length of the day in December in Berwick?
When are sunrise and sunset in December in Berwick?
How many hours of sunshine does Berwick have in December?
When is the lowest UV index in Berwick?
How high is the UV index in December in Berwick?
Average temperature in December
Berwick, IL
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 25°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 (17.8°F).
Average pressure in December
Berwick, 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
Berwick, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Berwick, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Berwick, IL
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.59").
Average rainfall days in December
Berwick, IL
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
Berwick, IL
- Average snowfall in December: 0.75"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Berwick, IL
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is January (10.3 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
Berwick, IL
- Average daylight in December: 9h and 2min
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 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 6min).
Average sunshine days in December
Berwick, IL
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in December
Berwick, 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
Berwick, IL
- Average cloud cover in December: 53
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
Berwick, 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).
Berwick, Illinois, USA
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