December weather forecastUnionville, IN
December
Weather in December
The first month of the winter, December, is also a wintry month in Unionville, Indiana, with an average temperature varying between 29.5°F (-1.4°C) and 40.8°F (4.9°C).Temperature
December's arrival coincides with a drop in the average high-temperature, decreasing from November's cool 51.3°F (10.7°C) to an icy 40.8°F (4.9°C). An average minimum temperature of 29.5°F (-1.4°C) marks the month of December.Humidity
With an average relative humidity of 82%, December is the most humid month.Rainfall
In December, the rain falls for 9.6 days. Throughout December, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Unionville, Indiana, there are 151.7 rainfall days, and 27.91" (709mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Unionville. In Unionville, Indiana, in December, during 5.6 snowfall days, 1.73" (44mm) of snow is typically accumulated. Throughout the year, there are 25.4 snowfall days, and 8.78" (223mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:46 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 5:32 pm EST.
Sunshine
In December, the average sunshine is 4.3h.UV index
The months with the lowest UV index in Unionville, Indiana, are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Unionville, IN
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Unionville, IN
- Average pressure in December: 30.13"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
Unionville, IN
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Unionville, IN
- Average humidity in December: 82%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Unionville, IN
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Unionville, IN
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is May (19.6 days).
The months with the least rainy days are January and February (8 days).
Average snowfall in December
Unionville, IN
- Average snowfall in December: 1.73"
The month with the highest snowfall is March (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Unionville, IN
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is January (6.8 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
Unionville, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Unionville, IN
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (8.6 days).
Average UV index in December
Unionville, 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, October, November and December (UV index 2).
Average cloud cover in December
Unionville, 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 30).
Average visibility in December
Unionville, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
