National Weather Service United States Department of Commerce

Morristown, TN Area Seasonal Climate Summary

Fall 2017 (September, October, and November)

 

All normals are based on 30 year climate period from 1981 - 2010.

Chattanooga's period of record is from 1879 - 2017.

Knoxville's period of record is from 1871 - 2017.

Tri-Cities' period of record is from 1937 - 2017.

 

Seasonal Averages/Totals and Normals

 

Chattanooga Seasonal Averages/Totals and Normals

Temperature and Precip

Average/Total Value  Value Ranking Records (Year)   Normal Value  Departure from normal

 Average Temperature

63.1° 32nd warmest 67.5° (2016) 61.7° +1.4

Total Precipitation 

11.39 in 55th wettest 29.05 in (1977)  12.32 in  -0.93

Total Snowfall

0.0 in 68th highest 6.5 in (1906) 0.0 in 0.0


 

 

Knoxville Seasonal Averages/Totals and Normals

Temperature and Precip

Average/Total Value  Value Ranking Records (Year) Normal Value Departure from normal

Average Temperature

61.0° 45th warmest 65.4° (2016) 60.2° +0.8

Total Precipitation 

10.98 in 43rd wettest 20.58 in (2011)  9.76 in +1.22

Total Snowfall 

T in 23rd highest 18.2 in (1952) 0.0 in 0.0

 

 

 

Tri-Cities Seasonal Averages/Totals and Normals

Temperature and Precip 

Average/Total Value

Value Ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

58.2°

23rd warmest

60.9° (2016)

56.7°

+1.5

Total Precipitation

6.54 in

55th wettest

14.51 in (1972)

8.19 in

-1.65

Total Snowfall

0.0 in 60th highest 18.1 in (1952) 0.3 in -0.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

September Averages/Totals and Normals

 

Chattanooga September Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

 Records (Year)

Normal Value

Departure from normal

Average Temperature

72.4°

68th warmest

82.8° (1925)

72.5°

-0.1

Total Precipitation

3.64 in

55th wettest

14.18 in (1977)

4.04 in

-0.40

Total Snowfall

N/A N/A N/A N/A N/A

 

 

 

Knoxville September Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

 Records (Year)

Normal Value

Departure from normal

Average Temperature

70.2°

89th warmest

79.7° (1925)

71.1°

-0.9

Total Precipitation

2.43 in

82nd wettest

9.19 in (1989)

3.24 in

-0.81

Total Snowfall

N/A N/A N/A N/A N/A

 

 

 

Tri-Cities September Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

 Records (Year)

Normal Value

Departure from normal

Average Temperature

67.5°

48th warmest

72.9° (1970)

67.1°

+0.4

Total Precipitation

0.99 in

74th wettest

7.09 in (1972)

2.99 in

-2.00
Total Snowfall N/A N/A N/A N/A N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

October Averages/Totals and Normals  

 

Chattanooga October Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

63.5°

34th warmest

69.7° (1919)

61.5° +2.0

Total Precipitation

6.10 in

14th wettest

11.91 in (1925)

3.28 in

+2.82

Total Snowfall

0.0 in 9th highest T in (2008) 0.0 in 0.0

 

 

 

Knoxville October Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

62.0°

34th warmest

68.9° (1919)

59.9°

+2.1

Total Precipitation

5.36 in

10th wettest

9.51 in (1925)

2.51 in

+2.85

Total Snowfall

T in 1st highest T in (2017) 0.0 in 0.0

 

 

 

Tri-Cities October Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

59.6°

17th warmest

63.6° (1984)

56.3°

+3.3

Total Precipitation

4.45 in

9th wettest

6.20 in (2014)

2.10 in

+2.35

Total Snowfall

0.0 in 17th highest 1.3 in (1993) 0.1 in -0.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

November Averages/Totals and Normals

 

Chattanooga November Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

53.4°

20th warmest

58.8° (1985)

51.2°

 +2.2

Total Precipitation

1.65 in

21st driest

0.16 in (1890)

5.00 in

-3.35

Total Snowfall

0.0 in 65th highest 6.5 in (1906) 0.0 in 0.0 

 

 

 

Knoxville November Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

50.7°

40th warmest

56.8° in (1985)

49.7°

+1.0

Total Precipitation

3.19 in

68th driest

0.17 in (1890)

4.01 in

-0.82

Total Snowfall

0.0 in 81st highest 18.2 in (1952) 0.0 in 0.0

 

 

 

Tri-Cities November Averages/Totals and Normals

Temperature and Precip

Average/Total Value

Value Ranking

Records (Year)

Normal Value

Departure from normal

Average Temperature

47.6°

31st warmest

55.3° (1985)

46.6°

+1.0

Total Preciptiation

1.10 in

36th driest 0.50 in (2001) 3.10 in -2.00

Total Snowfall

0.0 in 56th highest 18.1 in (1952) 0.2 in -0.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 RECORDS:

Chattanooga:

September 7, 2017: Record low temperature of 51 degrees breaks the old record of 52 degrees set in 1984.

September 8, 2017: Record low temperature of 52 degrees ties the old record of 52 degrees set in 1953.

September 11, 2017: Record lowest high temperature of 65 degrees breaks the old record of 66 degrees set in 1944.

September 12, 2017: Record lowest high temperature of 66 degrees ties the old record of 66 degrees set in 1891.

September 13, 2017: Record lowest high temperature of 64 degrees breaks the old record of 65 degrees set in 1902.

October 8, 2017: Record highest rainfall of 3.11 inches breaks the old record of 2.18 inches set in 1977.

October 9, 2017: Record highest low temperature of 71 degrees breaks the old record of 69 degrees set in 1982.

October 10, 2017: Record high temperature of 88 degrees ties the old record of 88 degrees set in 2010.

October 10, 2017: Record highest low temperature of 75 degrees breaks the old record of 70 degrees set in 1919.

October 11, 2017: Record highest low temperature of 71 degrees breaks the old record of 67 degrees set in 1884.

October 29, 2017: Record lowest high temperature of 45 degrees ties the old record of 45 degrees set in 1910.

November 7, 2017: Record highest low temperature of 67 degrees breaks the old record of 63 degrees set in 1938.

 

 

 Knoxville:

September 2, 2017: Record lowest high temperature of 67 degrees breaks the old record of 71 degrees set in 1928.

September 11, 2017: Record lowest high temperature of 62 degrees breaks the old record of 64 degrees set in 1880.

October 9, 2017: Record highest low temperature of 72 degrees breaks the old record of 69 degrees set in 1982.

October 10, 2017: Record highest low temperature of 72 degrees breaks the old record of 69 degrees set in 1982.

October 11, 2017: Record highest low temperature of 71 degrees breaks the old record of 66 degrees set in 1898.

October 23, 2017: Record highest rainfall of 1.56 inches breaks the old record of 1.33 inches set in 1981.

October 29, 2017: Record lowest high temperature of 41 degrees ties the old record of 41 degrees set in 1910.

November 4, 2017: Record highest low temperature of 61 degrees breaks the old record of 59 degrees set in 1977.

November 7, 2017: Record highest rainfall of 2.25 inches breaks the old record of 1.97 inches set in 1885.

 

 

Tri-Cities:

September 2, 2017: Record lowest high temperature of 67 degrees breaks the old record of 70 degrees set in 1986.

September 7, 2017: Record low temperature of 45 degrees breaks the old record of 47 degrees set in 1988.

September 8, 2017: Record low temperature of 44 degrees breaks the old record of 47 degrees set in 1951.

September 11, 2017: Record lowest high temperature of 62 degrees breaks the old record of 66 degrees set in 1968.

September 26, 2017: Record high temperature of 89 degrees ties the old record of 89 degrees set in 1998.

September 27, 2017: Record high temperature of 90 degrees breaks the old record of 89 degrees set in 1998.

October 9, 2017: Record highest low temperature of 69 degrees breaks the old record of 67 degrees set in 1970.

October 10, 2017: Record high temperature of 86 degrees breaks the old record of 85 degrees set in 1949.

October 10, 2017: Record highest low temperature of 67 degrees breaks the old record of 63 degrees set in 1999.

October 11, 2017: Record highest low temperature of 69 degrees breaks the old record of 62 degrees set in 2002.

October 12, 2017: Record high temperature of 86 degrees breaks the old record of 85 degrees set in 1970.

October 23, 2017: Record highest rainfall of 1.58 inches breaks the old record of 0.95 inches set in 1981.

November 7, 2017: Record highest low temperature of 58 degrees ties the old record of 58 degrees set in 1938.