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
Shelbyville in December experiences a subtle temperature decline, with average high-temperatures reducing from a chilly 45.3°F (7.4°C) in November to a cold 34.2°F (1.2°C). Shelbyville maintains a minor drop in temperature during December nights, with averages of 26.1°F (-3.3°C).Humidity
The average relative humidity in December is 84%.Rainfall
In Shelbyville, in December, it is raining for 8 days, with typically 1.22" (31mm) of accumulated precipitation. Throughout the year, there are 137.6 rainfall days, and 19.41" (493mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Shelbyville, in December, snow falls for 14.5 days, with typically accumulated 3.11" (79mm) of snow. In Shelbyville, during the entire year, snow falls for 66.9 days and aggregates up to 16.54" (420mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:53 am and sunset at 5:10 pm. On the last day of December, sunrise is at 8:12 am and sunset at 5:19 pm EST.
Sunshine
In Shelbyville, the average sunshine in December is 3h.UV index
The months with the lowest UV index in Shelbyville are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 1 during December translates into the following directions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Shelbyville have in December?
When is the lowest UV index?
How high is the UV index in December in Shelbyville?
Average temperature in December
Shelbyville, MI
- Average high temperature in December: 34.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Shelbyville, MI
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Shelbyville, MI
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January, February and April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in December
Shelbyville, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Shelbyville, MI
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in December
Shelbyville, MI
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is October (15 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Shelbyville, MI
- Average snowfall in December: 3.11"
The month with the highest snowfall is January (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Shelbyville, MI
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shelbyville, MI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Shelbyville, MI
- Average sunshine days in December: 11.2 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (9 days).
Average UV index in December
Shelbyville, MI
- Average UV index in December: 1
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Shelbyville, MI
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Shelbyville, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Shelbyville, Michigan, USA
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