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
The arrival of December indicates a decrease in the average high-temperature, moving from a frosty 43.2°F (6.2°C) in November to a freezing cold 30.2°F (-1°C). During the month of December, the temperature generally drops to a low average of 19.9°F (-6.7°C).Humidity
In December, the average relative humidity in Lancaster is 84%.Rainfall
In Lancaster, in December, it is raining for 5.5 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 134.2 rainfall days, and 27.32" (694mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Lancaster, during December, snow falls for 9.4 days and regularly aggregates up to 3.54" (90mm) of snow. Throughout the year, there are 46.7 snowfall days, and 19.49" (495mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:14 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:38 pm CST.
Sunshine
In Lancaster, the average sunshine in December is 4h.UV index
January, November 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 low health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 1 during December translates into the following guidance:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December in Lancaster?
How much does it rain in December?
How many days does it snow in December in Lancaster?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Lancaster have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Lancaster, WI
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in December: 19.9°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in December
Lancaster, WI
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Lancaster, WI
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Lancaster, WI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Lancaster, WI
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Lancaster, WI
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (18.5 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in December
Lancaster, WI
- Average snowfall in December: 3.54"
The month with the highest snowfall is January (4.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lancaster, WI
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is January (12.3 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
Lancaster, WI
- Average daylight in December: 9h and 1min
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: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Lancaster, WI
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10 days).
Average UV index in December
Lancaster, WI
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Lancaster, WI
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Lancaster, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Lancaster, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location