December weather forecastGreensburg, IN
December
Weather in December
The final month of the year, December, welcomes winter back to Greensburg. The brisk and chilly climate marks a stark contrast to the rain-soaked November highs of 50°F (10°C). Having bid farewell to autumn, residents of the city prepare for the white winter ahead. In between holiday preparations and closing out the year, the town of Greensburg shares in a peaceful, communal spirit.Temperature
December brings a decrease in the average high-temperature, shifting from a fresh 50°F (10°C) in November to an icy 40.1°F (4.5°C). Greensburg records an average low of 29.3°F (-1.5°C) throughout the nights in December.Humidity
January and December, with an average relative humidity of 82%, are the most humid months in Greensburg.Rainfall
In December, in Greensburg, the rain falls for 10.7 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in Greensburg, there are 161.3 rainfall days, and 31.26" (794mm) of precipitation is accumulated.Snowfall
Months with snowfall in Greensburg are January through April, October through December. In December, it is snowing for 7.8 days. Throughout December, 1.77" (45mm) of snow is accumulated. In Greensburg, during the entire year, snow falls for 35 days and aggregates up to 10.67" (271mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:43 am and sunset at 5:19 pm. On the last day of December, in Greensburg, sunrise is at 8:01 am and sunset at 5:28 pm EST.
Sunshine
In December, the average sunshine is 4h.UV index
The month with the lowest UV index in Greensburg is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 1 in December translates into this advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Mind you! Snow reflection can increase the intensity of 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
Greensburg, IN
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Greensburg, IN
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Greensburg, IN
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in December
Greensburg, IN
- Average humidity in December: 82%
The months with the highest relative humidity are January and December (82%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Greensburg, IN
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Greensburg, IN
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in December
Greensburg, IN
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greensburg, IN
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greensburg, IN
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 0min
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 54min).
Average sunshine days in December
Greensburg, IN
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
Greensburg, IN
- 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
Greensburg, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Greensburg, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
