December weather forecastGreenville, OH
December
Weather in December
The first month of the winter, December, is still a cold month in Greenville, Ohio, with an average temperature fluctuating between 27.7°F (-2.4°C) and 37.8°F (3.2°C).Temperature
December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 48.4°F (9.1°C) to a cold 37.8°F (3.2°C). In the month of December, Greenville's average low-temperature falls to a freezing cold 27.7°F (-2.4°C).Humidity
In Greenville, the average relative humidity in December is 83%.Rainfall
In Greenville, during December, the rain falls for 8.8 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Greenville, during the entire year, the rain falls for 145.2 days and collects up to 19.21" (488mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Greenville, in December, snow falls for 7.7 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, there are 35.1 snowfall days, and 6.34" (161mm) of snow is accumulated.Daylight
December has the shortest days of the year in Greenville, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:42 am and sunset at 5:13 pm. On the last day of December, sunrise is at 8:00 am and sunset at 5:23 pm EST.
Sunshine
The average sunshine in December is 3.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, OH
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Greenville, OH
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Greenville, OH
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Greenville, OH
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Greenville, OH
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in December
Greenville, OH
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in December
Greenville, OH
- Average snowfall in December: 1.26"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greenville, OH
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is January (10.5 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, OH
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 3h and 54min
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 36min).
Average sunshine days in December
Greenville, OH
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in December
Greenville, OH
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Greenville, OH
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Greenville, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
