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
Mount Sterling in December undergoes a mild reduction in the average high-temperature, shifting from November's cool 50°F (10°C) to an icy 38.5°F (3.6°C). December nights are marked by an average low-temperature of 26.8°F (-2.9°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In December, the rain falls for 6.4 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, in Mount Sterling, Illinois, there are 132 rainfall days, and 22.17" (563mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Mount Sterling, Illinois, in December, snow falls for 4.7 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 23.8 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
December has the shortest days of the year in Mount Sterling, with an average of 9h and 24min of daylight.On the first day of December in Mount Sterling, sunrise is at 7:06 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:48 pm CST.
Sunshine
In Mount Sterling, the average sunshine in December is 4.6h.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 minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Mount Sterling?
What is the average humidity in December in Mount Sterling?
How much does it rain in Mount Sterling in December?
How much does it snow in Mount Sterling in December?
What is the month with the shortest days in Mount Sterling?
How many hours of daylight does Mount Sterling have in December?
When are sunrise and sunset in December in Mount Sterling?
How many hours of sunshine does Mount Sterling have in December?
What is the month with the lowest UV index in Mount Sterling?
What is the UV index intensity in December in Mount Sterling?
Average temperature in December
Mount Sterling, IL
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Mount Sterling, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Mount Sterling, IL
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in December
Mount Sterling, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Mount Sterling, IL
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Mount Sterling, IL
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is May (16.9 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall in December
Mount Sterling, IL
- Average snowfall in December: 1.18"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mount Sterling, IL
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is January (7.8 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, IL
- 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 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Mount Sterling, IL
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in December
Mount Sterling, IL
- 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, IL
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in December
Mount Sterling, IL
- 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).
Mount Sterling, Illinois, USA
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