December weather forecastBay City, WI
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Bay City, Wisconsin, with an average temperature fluctuating between 15.1°F (-9.4°C) and 25.7°F (-3.5°C).Temperature
December signals a clear temperature drop, with average high-temperatures decreasing from November's icy 40.5°F (4.7°C) to a freezing cold 25.7°F (-3.5°C). During December, the nighttime temperature averages of 15.1°F (-9.4°C).Humidity
In Bay City, the average relative humidity in December is 88%.Rainfall
In Bay City, Wisconsin, during December, the rain falls for 3.5 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 108.7 rainfall days, and 14.17" (360mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Bay City, in December, snow falls for 12.2 days, with typically accumulated 1.57" (40mm) of snow. Throughout the year, there are 57.1 snowfall days, and 9.21" (234mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:46 am and sunset at 4:39 pm CST.
Sunshine
The average sunshine in December is 3.3h.UV index
The months with the lowest UV index are January, February, 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 unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests this advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bay City, WI
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in December
Bay City, WI
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Bay City, WI
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Bay City, WI
- Average humidity in December: 88%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in December
Bay City, WI
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Bay City, WI
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (14.9 days).
The month with the least rainy days is February (2.2 days).
Average snowfall in December
Bay City, WI
- Average snowfall in December: 1.57"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bay City, WI
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bay City, WI
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Bay City, WI
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in December
Bay City, 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
Bay City, WI
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Bay City, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
