December weather forecastGreenville, IN
December
Weather in December
The first month of the winter, December, is still a chilly month in Greenville, Indiana, with an average temperature fluctuating between 43.7°F (6.5°C) and 31.6°F (-0.2°C).Temperature
The move into December indicates a reduction in the average high-temperature, down from November's fresh 52.9°F (11.6°C) to a chilly 43.7°F (6.5°C). In December, Greenville encounters an average low-temperature of 31.6°F (-0.2°C) during the night.Humidity
The months with the highest humidity in Greenville are February and December, with an average relative humidity of 80%.Rainfall
In Greenville, in December, it is raining for 11.9 days, with typically 2.4" (61mm) of accumulated precipitation. In Greenville, during the entire year, the rain falls for 162.5 days and collects up to 31.65" (804mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, in Greenville, Indiana, it is snowing for 5.7 days. Throughout December, 1.26" (32mm) of snow is accumulated. Throughout the year, in Greenville, there are 30 snowfall days, and 8.9" (226mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Greenville.On the first day of December in Greenville, sunrise is at 7:42 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:33 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 4.3h of sunshine.UV index
The months with the lowest UV index in Greenville are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, IN
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in December: 31.6°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
Greenville, IN
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Greenville, IN
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in December
Greenville, IN
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Greenville, IN
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Greenville, IN
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (19 days).
The months with the least rainy days are January and February (10.3 days).
Average snowfall in December
Greenville, IN
- Average snowfall in December: 1.26"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greenville, IN
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenville, IN
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in December
Greenville, IN
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Greenville, IN
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Greenville, IN
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Greenville, IN
- Average visibility in December: 5mi
The months with the highest visibility are April, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July and December (5mi).
