Average Weather in Tompkinsville Kentucky, United States
In Tompkinsville, the summers are long, warm, and muggy; the winters are chilly; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 28°F to 86°F and is rarely below 13°F or above 93°F.
The hot season lasts for 3.9 months, from May 24 to September 21, with an average daily high temperature above 78°F. The hottest day of the year is July 21, with an average high of 86°F and low of 67°F.
The cold season lasts for 3.0 months, from November 29 to February 27, with an average daily high temperature below 53°F. The coldest day of the year is January 29, with an average low of 28°F and high of 45°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Tompkinsville, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Tompkinsville begins around June 13 and lasts for 5.0 months, ending around November 12. On September 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around November 12 and lasts for 7.0 months, ending around June 13. On January 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 58% of the time, and clear, mostly clear, or partly cloudy 42% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Tompkinsville varies throughout the year.
The wetter season lasts 4.9 months, from March 23 to August 20, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 43% on June 29.
The drier season lasts 7.1 months, from August 20 to March 23. The smallest chance of a wet day is 25% on October 12.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 43% on June 29.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Tompkinsville experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Tompkinsville. The most rain falls during the 31 days centered around May 3, with an average total accumulation of 4.8 inches.
The least rain falls around August 23, with an average total accumulation of 3.0 inches.
Average Monthly Rainfall
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. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Tompkinsville experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 3.3 months, from December 3 to March 12, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 30, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 8.7 months, from March 12 to December 3. The least snow falls around July 24, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Tompkinsville varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 39 minutes of daylight; the longest day is June 21, with 14 hours, 41 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:23 AM on June 13, and the latest sunrise is 1 hour, 46 minutes later at 7:09 AM on November 4. The earliest sunset is at 4:26 PM on December 6, and the latest sunset is 3 hours, 39 minutes later at 8:05 PM on June 28.
Daylight saving time (DST) is observed in Tompkinsville during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
Tompkinsville experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.1 months, from May 20 to September 24, during which time the comfort level is muggy, oppressive, or miserable at least 20% of the time. The muggiest day of the year is July 25, with muggy conditions 79% of the time.
The least muggy day of the year is February 6, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Tompkinsville experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.5 months, from October 27 to May 13, with average wind speeds of more than 3.2 miles per hour. The windiest day of the year is February 25, with an average hourly wind speed of 4.1 miles per hour.
The calmer time of year lasts for 5.5 months, from May 13 to October 27. The calmest day of the year is July 30, with an average hourly wind speed of 2.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Tompkinsville varies throughout the year.
The wind is most often from the west for 1.1 months, from July 3 to August 7, with a peak percentage of 36% on July 13. The wind is most often from the south for 11 months, from August 7 to July 3, with a peak percentage of 37% on January 1.
The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 4.5 months, from April 18 to September 3, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is June 18, with an average of 6.6 kWh.
The darker period of the year lasts for 3.0 months, from November 9 to February 9, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest day of the year is December 24, with an average of 2.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Tompkinsville are 36.702 deg latitude, -85.692 deg longitude, and 925 ft elevation.
The topography within 2 miles of Tompkinsville contains only modest variations in elevation, with a maximum elevation change of 295 feet and an average elevation above sea level of 928 feet. Within 10 miles contains only modest variations in elevation (630 feet). Within 50 miles contains significant variations in elevation (1,647 feet).
The area within 2 miles of Tompkinsville is covered by cropland (77%), trees (12%), and artificial surfaces (11%), within 10 miles by cropland (57%) and trees (42%), and within 50 miles by trees (48%) and cropland (48%).
This report illustrates the typical weather in Tompkinsville, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Tompkinsville.
For each station, the records are corrected for the elevation difference between that station and Tompkinsville 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 Tompkinsville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Tompkinsville and a given station.
The stations contributing to this reconstruction are: Glasgow Municipal Airport (51%, 43 kilometers, northwest); Wayne County Airport (22%, 76 kilometers, east); Crossville Memorial Airport (14%, 100 kilometers, southeast); and Smyrna Airport (13%, 107 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .