Average Weather in October in Chattanooga Tennessee, United States
In Chattanooga, the month of October is characterized by rapidly falling daily high temperatures, with daily highs decreasing by 10°F, from 77°F to 67°F over the course of the month, and rarely exceeding 85°F or dropping below 56°F.
Daily low temperatures decrease by 11°F, from 57°F to 46°F, rarely falling below 35°F or exceeding 67°F.
For reference, on July 22, the hottest day of the year, temperatures in Chattanooga typically range from 71°F to 89°F, while on January 26, the coldest day of the year, they range from 33°F to 50°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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 October
The month of October in Chattanooga experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 34% to 38%.
The clearest day of the month is October 8, with clear, mostly clear, or partly cloudy conditions 67% of the time.
For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on September 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover in October
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Chattanooga, the chance of a wet day over the course of October is essentially constant, remaining around 22% throughout.
For reference, the year's highest daily chance of a wet day is 44% on July 9, and its lowest chance is 21% on October 16.
Probability of Precipitation in October
The average sliding 31-day rainfall during October in Chattanooga is essentially constant, remaining about 3.2 inches throughout, and rarely exceeding 6.5 inches or falling below 0.9 inches.
Average Monthly Rainfall in October
Over the course of October in Chattanooga, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 3 minutes, implying an average daily decrease of 2 minutes, 5 seconds, and weekly decrease of 14 minutes, 37 seconds.
The shortest day of the month is October 31, with 10 hours, 46 minutes of daylight and the longest day is October 1, with 11 hours, 49 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month in Chattanooga is 7:36 AM on October 1 and the latest sunrise is 25 minutes later at 8:01 AM on October 31.
The latest sunset is 7:24 PM on October 1 and the earliest sunset is 37 minutes earlier at 6:47 PM on October 31.
Daylight saving time is observed in Chattanooga during 2017, but it neither starts nor ends during October, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:27 AM and sets 14 hours, 31 minutes later, at 8:58 PM, while on December 21, the shortest day of the year, it rises at 7:45 AM and sets 9 hours, 48 minutes later, at 5:33 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in October
The chance that a given day will be muggy in Chattanooga is rapidly decreasing during October, falling from 17% to 2% over the course of the month.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 85% of the time, while on January 23, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
The average hourly wind speed in Chattanooga is essentially constant during October, remaining within 0.1 miles per hour of 2.3 miles per hour throughout.
For reference, on February 26, the windiest day of the year, the daily average wind speed is 3.0 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 1.8 miles per hour.
Average Wind Speed in October
Wind Direction in October
The average daily incident shortwave solar energy in Chattanooga is decreasing during October, falling by 1.2 kWh, from 4.9 kWh to 3.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Chattanooga are 35.046 deg latitude, -85.310 deg longitude, and 666 ft elevation.
The topography within 2 miles of Chattanooga contains only modest variations in elevation, with a maximum elevation change of 262 feet and an average elevation above sea level of 678 feet. Within 10 miles contains only modest variations in elevation (1,660 feet). Within 50 miles contains very significant variations in elevation (3,652 feet).
The area within 2 miles of Chattanooga is covered by artificial surfaces (94%), within 10 miles by trees (56%) and artificial surfaces (34%), and within 50 miles by trees (67%) and cropland (27%).
This report illustrates the typical weather in Chattanooga 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 Chattanooga.
For each station, the records are corrected for the elevation difference between that station and Chattanooga 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 Chattanooga is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Chattanooga and a given station.
The stations contributing to this reconstruction are: Lovell Field (87%, 10 kilometers, east); Isbell Field (4.4%, 74 kilometers, southwest); Scottsboro Municipal Airport Word Field (4.3%, 75 kilometers, southwest); Crossville Memorial Airport (2.4%, 103 kilometers, north); and Smyrna Airport (1.5%, 153 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .