Knoxville Weather In September
The hottest September day in Knoxville for the past 69 years was 103 degrees Fahrenheit, most recently registered on September 5, 1954, while the mean high temperature is 81. The lowest documented temperature for Knoxville for the past 69 years in September was 36 most recently registered on September 30, 1967, while the normal low measured temperature is 61.
US National Weather Service Knoxville September Weather data records that on September 29, 1967, the high temperature did not exceed 52 degrees Fahrenheit, the lowest high measured in Knoxville in the past 69 years. Weather Service records also indicate that on September 19, 1954, the low temperature for the day was not measured below 76 degrees, the highest low measured in Knoxville in the last 69 years.
National Weather Service data shows that the high temperature in Knoxville on September First averages 86 degrees Fahrenheit and the high on the final day of September averages 77 degrees. The average daily low temperature in Knoxville on September First is 66 degrees Fahrenheit and the average low on the last day of September is 55 degrees.
Knoxville receives an average of 3.04 inches of precipitation during September. The most rain recorded in a single day, as shown by September Knoxville Weather data, was 4.17 inches on September 29, 1944.