December weather forecastNew Berlin, WI
December
Weather in December
December in New Berlin, Wisconsin, welcomes the winter season with a delightfully festive atmosphere and a drop in temperature. The white snow offers a stark contrast to the preceding months, creating a typical winter landscape. The snowfall levels increase to 1.54" (39mm) from its predecessor November, making it the second-highest of the year. While it is significantly colder than November, December announces the holiday season, allowing residents to enjoy the winter charm just in time for Christmas and New Year. The winter wonderland effect brings an enchanting close to the year, making for picturesque views and a cozy environment.Temperature
With the onset of December, New Berlin experiences a modest temperature adjustment, with the average high-temperature receding from a frosty 43.7°F (6.5°C) in November to a cold 32°F (0°C). New Berlin reports an average low temperature of 23.2°F (-4.9°C) in December, a minor decrease from the day's highs.Humidity
In December, the average relative humidity is 82%.Rainfall
The month with the least rainfall is December, when the rain falls for 5.6 days and typically collects 0.75" (19mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In New Berlin, Wisconsin, in December, during 9.6 snowfall days, 1.54" (39mm) of snow is typically accumulated. In New Berlin, during the entire year, snow falls for 46 days and aggregates up to 9.72" (247mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:27 pm CST.
Sunshine
In New Berlin, the average sunshine in December is 3.9h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
New Berlin, WI
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
New Berlin, WI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
New Berlin, WI
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
New Berlin, WI
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in December
New Berlin, WI
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is July (2.48").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
New Berlin, WI
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
New Berlin, WI
- Average snowfall in December: 1.54"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
New Berlin, WI
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
New Berlin, WI
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
New Berlin, WI
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
New Berlin, WI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
New Berlin, WI
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in December
New Berlin, WI
- 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).
