Average Weather in December in Campbellsville Kentucky, United States
In Campbellsville, the month of December is characterized by falling daily high temperatures, with daily highs decreasing by 7°F, from 51°F to 44°F over the course of the month, and rarely exceeding 65°F or dropping below 29°F.
Daily low temperatures decrease by 5°F, from 35°F to 30°F, rarely falling below 14°F or exceeding 50°F.
For reference, on July 21, the hottest day of the year, temperatures in Campbellsville typically range from 67°F to 87°F, while on January 29, the coldest day of the year, they range from 28°F to 43°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in December
The month of December in Campbellsville experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 52% to 57%.
The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 48% of the time.
For reference, on January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on September 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Campbellsville, the chance of a wet day over the course of December is essentially constant, remaining around 30% throughout.
For reference, the year's highest daily chance of a wet day is 41% on June 30, and its lowest chance is 25% on October 12.
Over the course of December in Campbellsville, the chance of a day with only rain decreases from 28% to 24%, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Campbellsville is decreasing, starting the month at 4.1 inches, when it rarely exceeds 6.7 inches or falls below 1.8 inches, and ending the month at 3.4 inches, when it rarely exceeds 5.6 inches or falls below 1.3 inches.
The highest average 31-day accumulation is 4.1 inches on December 3.
Average Monthly Rainfall in December
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during December in Campbellsville is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.7 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Campbellsville, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 35 minutes of daylight and the longest day is December 1, with 9 hours, 47 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Campbellsville is 7:37 AM on December 1 and the latest sunrise is 18 minutes later at 7:55 AM on December 31.
The earliest sunset is 5:23 PM on December 6 and the latest sunset is 10 minutes later at 5:33 PM on December 31.
Daylight saving time is observed in Campbellsville during 2017, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:21 AM and sets 14 hours, 44 minutes later, at 9:05 PM, while on December 21, the shortest day of the year, it rises at 7:52 AM and sets 9 hours, 35 minutes later, at 5:27 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Campbellsville is essentially constant during December, remaining around 0% throughout.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 74% of the time, while on November 30, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
The average hourly wind speed in Campbellsville is gradually increasing during December, increasing from 7.3 miles per hour to 7.8 miles per hour over the course of the month.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 8.3 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.
Average Wind Speed in December
Wind Direction in December
The average daily incident shortwave solar energy in Campbellsville is essentially constant during December, remaining within 0.1 kWh of 2.2 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 2.0 kWh on December 25.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Campbellsville are 37.343 deg latitude, -85.342 deg longitude, and 840 ft elevation.
The topography within 2 miles of Campbellsville contains only modest variations in elevation, with a maximum elevation change of 217 feet and an average elevation above sea level of 836 feet. Within 10 miles contains only modest variations in elevation (591 feet). Within 50 miles contains significant variations in elevation (1,391 feet).
The area within 2 miles of Campbellsville is covered by cropland (59%) and artificial surfaces (41%), within 10 miles by cropland (64%) and trees (30%), and within 50 miles by cropland (56%) and trees (41%).
This report illustrates the typical weather in Campbellsville year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Campbellsville.
For each station, the records are corrected for the elevation difference between that station and Campbellsville according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Campbellsville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Campbellsville and a given station.
The stations contributing to this reconstruction are: Stuart Powell Field (26%, 57 kilometers, northeast); Glasgow Municipal Airport (22%, 64 kilometers, southwest); Wayne County Airport (19%, 69 kilometers, southeast); Lake Cumberland Regional Airport (18%, 72 kilometers, southeast); and Godman Army Airfield (15%, 83 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .