KNOXVILLE & EAST TENNESSEE WEATHER TRIVIA
Historical observations for temperature and precipitation in Knoxville date back to what year?
Observations began in 1871 with the U.S. Signal Corp in Knoxville before becoming the U.S. Weather Bureau which is now the National Weather, Service. Observations were taken in downtown Knoxville until 1937 when operations were moved to the new administrative building at McGhee Tyson Airport, where it remains today.
What is the highest 1-day snowfall for the official Knoxville observation site?
The highest one-day total snowfall accumulation of 17.5 inches occurred on February 13, 1960. The highest 3-day event snowfall total is 22.6 inches from December 4 through December 6, 1886.
What is the highest 1-day rainfall total for the official Knoxville observation site?
The highest one-day total rainfall accumulation of 6.14 inches occurred on July 16, 1917. The highest 3-day event rainfall total is 9 inches from July 14 through July 16, 1917.
What is the hottest temperature recorded at the official Knoxville observation site?
The all-time max temperature record of 105°F was set on June 30, 2012, and July 1, 2012. This broke the old record of 104°F set in 1930, 1952, and 1954. The all-time max temperature for East Tennessee was 107°F at the official Chattanooga observation site on July 1, 2012.
What is the coldest temperature recorded at the official Knoxville observation site?
The all-time minimum temperature record of -24°F was set on January 21, 1985, as a large area arctic high pressure airmass moved into the region. On this morning, Knoxville was the coldest site in the Contiguous U.S.
What is the largest diameter hail stone reported in East Tennessee?
The largest hail stone reported in East Tennessee is 4.25 inches on June 15, 2007, in Campbell County and on April 9, 2011, in Hawkins County. Multiple reports of 4 inch hail have been recorded in Loudon, Rhea, and Hamilton counties. Most large hail is produced by rotating thunderstorms.
4.25” diameter hail