December weather forecastMarengo, WI
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Marengo, Wisconsin, with an average temperature fluctuating between 25.3°F (-3.7°C) and 16°F (-8.9°C).Temperature
With December's onset, the average high-temperature recedes from November's cold 37.6°F (3.1°C) to a subzero cold 25.3°F (-3.7°C). The temperature lowers to an average of 16°F (-8.9°C) during December nights.Humidity
In December, the average relative humidity is 88%.Rainfall
In December, the rain falls for 4.3 days. Throughout December, 1.54" (39mm) of precipitation is accumulated. Throughout the year, there are 121.6 rainfall days, and 21.42" (544mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 20.2 days and accumulates 7.95" (202mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:26 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:26 pm CST.
Sunshine
In Marengo, the average sunshine in December is 2.5h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Marengo, WI
- Average high temperature in December: 25.3°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in December
Marengo, WI
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Marengo, WI
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is November (9.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Marengo, WI
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Marengo, WI
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Marengo, WI
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in December
Marengo, WI
- Average snowfall in December: 7.95"
The month with the highest snowfall is December (7.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marengo, WI
- Average snowfall days in December: 20.2 days
The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marengo, WI
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Marengo, WI
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is December (9.8 days).
Average UV index in December
Marengo, 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, November and December (UV index 1).
Average cloud cover in December
Marengo, WI
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Marengo, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
