December weather forecastGreenville, WI
December
Weather in December
December, the first month of the winter in Greenville, is still a freezing cold month, with temperature in the range of an average high of 28.2°F (-2.1°C) and an average low of 18.5°F (-7.5°C).Temperature
The shift to December brings a decrease in the average high-temperature, falling from a wintry 41.5°F (5.3°C) in November to a freezing cold 28.2°F (-2.1°C). Greenville's nights in December cool down to an average low-temperature of 18.5°F (-7.5°C).Humidity
The average relative humidity in December is 85%.Rainfall
In December, the rain falls for 6.2 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 131.1 rainfall days, and 24.45" (621mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 11.4 days. Throughout December, 4.33" (110mm) of snow is accumulated. In Greenville, during the entire year, snow falls for 56.9 days and aggregates up to 21.97" (558mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:10 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:25 pm CST.
Sunshine
In Greenville, the average sunshine in December is 3.7h.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, WI
- Average high temperature in December: 28.2°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 (21.9°F).
- Average low temperature in December: 18.5°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 (10.8°F).
Average pressure in December
Greenville, WI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Greenville, WI
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Greenville, WI
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Greenville, WI
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in December
Greenville, WI
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in December
Greenville, WI
- Average snowfall in December: 4.33"
The month with the highest snowfall is January (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greenville, WI
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenville, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Greenville, WI
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in December
Greenville, WI
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Greenville, WI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Greenville, WI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
