December weather forecastNorma, WI
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Norma, Wisconsin, with an average temperature varying between 24.8°F (-4°C) and 13.8°F (-10.1°C).Temperature
Norma's transition into December marks a considerable drop in the average high-temperature, moving down from a cold 39.4°F (4.1°C) in November to a subzero cold 24.8°F (-4°C). In Norma, an average nighttime temperature of 13.8°F (-10.1°C) is expected during December.Humidity
In December, the average relative humidity is 89%.Rainfall
In Norma, during December, the rain falls for 4.3 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Norma, Wisconsin, during the entire year, the rain falls for 127.8 days and collects up to 25.67" (652mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Norma, in December, snow falls for 13.4 days, with typically accumulated 4.96" (126mm) of snow. In Norma, during the entire year, snow falls for 68.2 days and aggregates up to 25.35" (644mm) of snow.Daylight
December has the shortest days of the year in Norma, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 4:25 pm. On the last day of December, in Norma, sunrise is at 7:43 am and sunset at 4:34 pm CST.
Sunshine
The average sunshine in December is 3h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Norma. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 1 during December translates into the following guidance:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. 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
Norma, WI
- Average high temperature in December: 24.8°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 (19.4°F).
- Average low temperature in December: 13.8°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in December
Norma, 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 (29.89"Hg).
Average wind speed in December
Norma, WI
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Norma, WI
- Average humidity in December: 89%
The month with the highest relative humidity is February (92%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in December
Norma, WI
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Norma, WI
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in December
Norma, WI
- Average snowfall in December: 4.96"
The month with the highest snowfall is February (6.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Norma, WI
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Norma, WI
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 54min).
Average sunshine days in December
Norma, WI
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in December
Norma, 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, February, November and December (UV index 1).
Average cloud cover in December
Norma, WI
- Average cloud cover in December: 69
The months with the most cloud cover are January and February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Norma, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
