December weather forecastMonona, WI
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Monona, Wisconsin, with temperature in the range of an average high of 30.4°F (-0.9°C) and an average low of 20.3°F (-6.5°C).Temperature
Onset of December comes with a temperature decline, the average high falling from a cold 42.4°F (5.8°C) in November to a subzero cold 30.4°F (-0.9°C). Monona, in the month of December, anticipates a consistent average low-temperature of 20.3°F (-6.5°C).Humidity
In December, the average relative humidity is 84%.Rainfall
January, March, November and December are months with the least rain when the rain falls for 2 days and typically aggregates up to 0.24" (6mm) of rain.Snowfall
January through April, October through December are months with snowfall in Monona. In Monona, Wisconsin, during December, snow falls for 4.9 days and regularly aggregates up to 0.16" (4mm) of snow. In Monona, during the entire year, snow falls for 22.6 days and aggregates up to 2.83" (72mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:32 pm CST.
Sunshine
The average sunshine in December is 3.9h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Monona, WI
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Monona, WI
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Monona, WI
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Monona, WI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Monona, WI
- Average rainfall in December: 0.24"
The wettest month (with the highest rainfall) is July (0.63").
The driest months (with the least rainfall) are January, March, November and December (0.24").
Average rainfall days in December
Monona, WI
- Average rainfall days in December: 2 days
The month with the highest number of rainy days is June (6.7 days).
The month with the least rainy days is January (1.1 days).
Average snowfall in December
Monona, WI
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Monona, WI
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Monona, 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 month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Monona, WI
- Average sunshine days in December: 27 days
The month with the most sunshine days is December (27 days).
The month with the least sunshine days is June (19.8 days).
Average UV index in December
Monona, 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
Monona, WI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Monona, WI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
