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
Unionville's progression into December includes a drop in the average high-temperature, from a frosty 43.9°F (6.6°C) in November to a wintry 32.9°F (0.5°C). Unionville, during December nights, observes a steady temperature, averaging at a freezing cold 24.4°F (-4.2°C).Humidity
The average relative humidity in December is 84%.Rainfall
December is the month with the least rainfall. Rain falls for 7.5 days and accumulates 1.18" (30mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Unionville, during December, snow falls for 14 days and regularly aggregates up to 2.76" (70mm) of snow. Throughout the year, there are 65 snowfall days, and 16.26" (413mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:48 am and sunset at 4:58 pm. On the last day of December, sunrise is at 8:07 am and sunset at 5:07 pm EST.
Sunshine
In December, the average sunshine is 3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Unionville have in December?
When are sunrise and sunset in December in Unionville?
How long on average sun shines in December?
What is the month with the lowest UV index in Unionville?
What is the UV index intensity in December?
Average temperature in December
Unionville, MI
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 24.4°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in December
Unionville, MI
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Unionville, MI
- Average wind speed in December: 10.2mph
The windiest months (with the highest average wind speed) are January, February and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Unionville, MI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Unionville, MI
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days in December
Unionville, MI
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is October (15.8 days).
The month with the least rainy days is February (5 days).
Average snowfall in December
Unionville, MI
- Average snowfall in December: 2.76"
The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Unionville, MI
- Average snowfall days in December: 14 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Unionville, MI
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Unionville, MI
- Average sunshine days in December: 11.3 days
The month with the most sunshine days is September (16.7 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in December
Unionville, MI
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Unionville, MI
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Unionville, MI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Unionville, Michigan, USA
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