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
A subtle decrease in the average high-temperature marks December, falling from November's chilly 47.3°F (8.5°C) to a wintry 36.3°F (2.4°C). Shelby records a mean low-temperature of 26.4°F (-3.1°C) in December.Humidity
In December, the average relative humidity is 81%.Rainfall
In December, the rain falls for 9.1 days. Throughout December, 1.34" (34mm) of precipitation is accumulated. In Shelby, during the entire year, the rain falls for 153.9 days and collects up to 23.46" (596mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Shelby, Indiana, in December, snow falls for 9.3 days, with typically accumulated 2.13" (54mm) of snow. Throughout the year, there are 44.8 snowfall days, and 12.4" (315mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 6:56 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:30 pm CST.
Sunshine
In December, the average sunshine is 4.1h.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 health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Shelby in December?
What is the average humidity in December?
How many days 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 Shelby have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Shelby, IN
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Shelby, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Shelby, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Shelby, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Shelby, IN
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Shelby, IN
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Shelby, IN
- Average snowfall in December: 2.13"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Shelby, IN
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (13.2 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
Shelby, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Shelby, IN
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are June and July (10.3 days).
Average UV index in December
Shelby, IN
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Shelby, IN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Shelby, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Shelby, Indiana, USA
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