December weather forecastGreenville, MI
December
Weather in December
December, the first month of the winter in Greenville, is also an icy month, with an average temperature varying between 32.7°F (0.4°C) and 24.6°F (-4.1°C).Temperature
Start of December brings a shift in the average high-temperature, falling from November's frosty 43.9°F (6.6°C) to a cold 32.7°F (0.4°C). Greenville records a consistent average nighttime temperature of 24.6°F (-4.1°C) in December, slightly lower than the daytime high.Humidity
The average relative humidity in December is 85%.Rainfall
In Greenville, in December, it is raining for 10.2 days, with typically 1.85" (47mm) of accumulated precipitation. In Greenville, during the entire year, the rain falls for 156.9 days and collects up to 26.14" (664mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Greenville, in December, during 17.7 snowfall days, 5.83" (148mm) of snow is typically accumulated. Throughout the year, in Greenville, Michigan, there are 78.4 snowfall days, and 25.91" (658mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:53 am and sunset at 5:06 pm. On the last day of December, sunrise is at 8:12 am and sunset at 5:15 pm EST.
Sunshine
In Greenville, the average sunshine in December is 3h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 1 in December leads to these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. 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, MI
- Average high temperature in December: 32.7°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 24.6°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Greenville, MI
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Greenville, MI
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Greenville, MI
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Greenville, MI
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in December
Greenville, MI
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Greenville, MI
- Average snowfall in December: 5.83"
The month with the highest snowfall is January (7.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greenville, MI
- Average snowfall days in December: 17.7 days
The month with the highest number of snowfall days is January (20.7 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, MI
- 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: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Greenville, MI
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in December
Greenville, MI
- 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, MI
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Greenville, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
