December weather forecastHales Corners, WI
December
Weather in December
The first month of the winter, December, is also an icy month in Hales Corners, Wisconsin, with an average temperature varying between 32.4°F (0.2°C) and 23.9°F (-4.5°C).Temperature
Hales Corners's average high-temperature decreases in December, falling from a frosty 43.7°F (6.5°C) in November to a cold 32.4°F (0.2°C). Hales Corners sees a gentle drop from the daily peak temperature in December, with an average low settling at a subzero cold 23.9°F (-4.5°C).Humidity
In December, the average relative humidity is 81%.Rainfall
The month with the least rainfall is December, when the rain falls for 5.4 days and typically collects 0.79" (20mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Hales Corners, during December, snow falls for 9.3 days and regularly aggregates up to 1.97" (50mm) of snow. In Hales Corners, during the entire year, snow falls for 45.9 days and aggregates up to 12.09" (307mm) 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
The average sunshine in December is 4h.UV index
January 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 minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Minimize direct exposure to the Sun during midday when its radiation is at its peak. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hales Corners, WI
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in December
Hales Corners, WI
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Hales Corners, WI
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Hales Corners, WI
- Average humidity in December: 81%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Hales Corners, WI
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.79").
Average rainfall days in December
Hales Corners, WI
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in December
Hales Corners, WI
- Average snowfall in December: 1.97"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hales Corners, WI
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hales Corners, 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: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Hales Corners, WI
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Hales Corners, 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
Hales Corners, WI
- Average cloud cover in December: 60
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
Hales Corners, 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).
