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
December's onset brings a slight change in high-temperatures, falling from a cool 51.8°F (11°C) in November to a cold 42.6°F (5.9°C). Throughout December, an average low-temperature of 30.9°F (-0.6°C) is experienced.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In Mount Sterling, in December, it is raining for 12.6 days, with typically 2.09" (53mm) of accumulated precipitation. In Mount Sterling, Indiana, during the entire year, the rain falls for 166.7 days and collects up to 26.46" (672mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Mount Sterling, during December, snow falls for 7 days and regularly aggregates up to 1.73" (44mm) of snow. Throughout the year, there are 31 snowfall days, and 7.05" (179mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:40 am and sunset at 5:18 pm. On the last day of December, sunrise is at 7:58 am and sunset at 5:28 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December in Mount Sterling?
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 Mount Sterling have in December?
When are sunrise and sunset in December in Mount Sterling?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Mount Sterling, IN
- Average high temperature in December: 42.6°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Mount Sterling, IN
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Mount Sterling, IN
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Mount Sterling, IN
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are September and October (75%).
Average rainfall in December
Mount Sterling, IN
- Average rainfall in December: 2.09"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Mount Sterling, IN
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Mount Sterling, IN
- Average snowfall in December: 1.73"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mount Sterling, IN
- Average snowfall days in December: 7 days
The month with the highest number of snowfall days is January (9 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
Mount Sterling, IN
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- 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: 4h and 6min).
Average sunshine days in December
Mount Sterling, IN
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Mount Sterling, IN
- 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
Mount Sterling, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Mount Sterling, IN
- Average visibility in December: 5mi
The months with the highest visibility are March, April, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, May, July and December (5mi).
Mount Sterling, Indiana, USA
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