National Weather Service Weather Forecast Office

- With the aid of several heavy rain days, the total rainfall for October was above normal at all three sites. In fact, all three sites ranked in the top 25 for October rainfall. In addition, Tri-Cities set a new daily rainfall record.

 

• Chattanooga received 7.03 inches of rain in October, which was 3.77 inches above normal. It ranked as the 5th wettest October on record at Chattanooga. Measurable rain fell on seventeen days, and eight of those days had more than one-quarter of an inch. In addition, more than an inch fell on two seperate days. The heaviest rain fell on the 31st when 1.23 inches was recorded. The wettest October of the 131 years of observations taken at Chattanooga was back in 1925, when only 11.91 inches of rain was recorded.

   

• Knoxville received 4.28 inches of rain in October, which was 1.63 inches above normal. It ranked as the 22nd wettest October on record at Knoxville. Measurable rainfall occurred on fifteen days, and eight of those days had more than one-quarter of an inch. The heaviest rain fell on the 14th when 0.76 inches was recorded. The wettest October of the 139 years of observations taken in Knoxville was back in 1925, when 9.51 inches of rain was recorded.

   

• Tri-Cities received 4.02 inches of rain in October, which was 1.72 inches above normal. It ranked as the 9th wettest October on record at Tri-Cities. Measurable rain occurred on eighteen days, and six of those days had more than one-quarter of an inch. The heaviest rain fell on the 27th when 0.88 inches of rain was reported, which also broke the old daily rainfall record of 0.82 inches set back in 2006. The wettest October of the 72 years of observations taken at Tri-Cities was back in 1959, when only 5.65 inches of rain was recorded.

- With the variations in daily temperatures, the monthly-averaged temperartures for October ended up above normal at Tri-Cities, while Chattanooga and Knoxville were both below normal. No daily temperature records were broken.

 

• The monthly-averaged temperature for October at Chattanooga was 59.6 degrees, which was 0.8 degrees below normal. It tied with 1907, 1909, and 1925 as the 40th coolest October on record at Chattanooga. The coolest October at Chattanooga was back in 1917, when the average temperature was 54.6 degrees.

   

• The monthly-averaged temperature for October at Knoxville was 58.0 degrees, which was 0.8 degree below normal. It tied with 1908 as the 44th coolest October on record at Knoxville. The coolest October at Knoxville was back in 1875, when the average temperature was 51.9 degrees.

   

• The monthly-averaged temperature for October at Tri-Cities was 55.6 degrees, which was 0.6 degrees above normal. It ranked as the 24th coolest October on record at Tri-Cities. The coolest October at Tri-Cities was back in 1988, when the average temperature was 50.2 degrees.