December weather forecastUnion Grove, WI
December
Weather in December
December, the first month of the winter in Union Grove, is also an icy month, with an average temperature ranging between min 23.7°F (-4.6°C) and max 32.7°F (0.4°C).Temperature
Stepping into December, Union Grove observes a temperature decline, with the average high falling from November's frosty 43.9°F (6.6°C) to a wintry 32.7°F (0.4°C). Union Grove's temperature during December nights registers a minor decrease to an average low of 23.7°F (-4.6°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In Union Grove, during December, the rain falls for 7.7 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 154.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Union Grove, in December, during 11 snowfall days, 2.99" (76mm) of snow is typically accumulated. In Union Grove, during the entire year, snow falls for 50 days and aggregates up to 18.66" (474mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:03 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:28 pm CST.
Sunshine
The average sunshine in December is 4h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Boost your sun resistance with garments that are densely woven yet spacious. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Union Grove, WI
- Average high temperature in December: 32.7°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 23.7°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in December
Union Grove, WI
- Average pressure in December: 30.09"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
Union Grove, WI
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Union Grove, WI
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in December
Union Grove, WI
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in December
Union Grove, WI
- Average rainfall days in December: 7.7 days
The months with the highest number of rainy days are May and July (19 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Union Grove, WI
- Average snowfall in December: 2.99"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Union Grove, WI
- Average snowfall days in December: 11 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Union Grove, 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 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Union Grove, WI
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in December
Union Grove, WI
- Average UV index in December: 1
The month with the highest UV index is August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Union Grove, WI
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Union Grove, 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).
