Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With December's arrival, Union, Ohio, sees a decrease in average high-temperatures, moving from a frosty 49.1°F (9.5°C) in November to a wintry 38.8°F (3.8°C). The low-temperature average for Union during December stands at a subzero cold 28.8°F (-1.8°C).Humidity
In Union, the average relative humidity in December is 82%.Rainfall
In December, in Union, the rain falls for 9.2 days. Throughout December, 0.98" (25mm) of precipitation is accumulated. In Union, Ohio, during the entire year, the rain falls for 133.9 days and collects up to 14.45" (367mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Union. In Union, during December, snow falls for 7.1 days and regularly aggregates up to 0.71" (18mm) of snow. Throughout the year, in Union, there are 30.2 snowfall days, and 3.82" (97mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Union, sunrise is at 7:40 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:22 pm EST.
Sunshine
In Union, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index in Union are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
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. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Union in December?
What is the average humidity in December in Union?
How much does it rain in Union in December?
How many days does it snow in December in Union?
What is the month with the shortest days in Union?
How many hours of daylight does Union have in December?
When is the sunrise / sunset in December in Union?
How many hours of sunshine does Union have in December?
What are the months with the lowest UV index in Union?
How high is the UV index in December in Union?
Average temperature in December
Union, OH
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in December
Union, 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
Union, OH
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Union, OH
- Average humidity in December: 82%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Union, OH
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is November (0.83").
Average rainfall days in December
Union, OH
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in December
Union, OH
- Average snowfall in December: 0.71"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Union, OH
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Union, OH
- Average daylight in December: 9h and 2min
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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Union, OH
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in December
Union, OH
- Average UV index in December: 2
The months with the highest UV index are 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
Union, OH
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Union, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Union, Ohio, USA
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