Excessive Rainfall in the Southern Plains, Ozarks, and Upper Midwest Thursday

Heavy thunderstorms will continue areas of excessive rainfall and locally considerable flooding over parts of the southern Plains into the mid-Mississippi River Valley through Friday. Heavy to excessive rainfall may bring flash and urban flooding, along with isolated riverine flooding to a part of the Upper Midwest Thursday. Read More >

                                  KNOXVILLE TN
                            DAILY NORMALS AND RECORDS
                                    SEPTEMBER

      MAX   MIN   AVG   HDD   CDD    PCPN    REC HIGH     REC LOW     REC PCPN

 1     86    65    76     0    11    0.10   100  1951    50  1946    1.10 1982
 2     86    65    76     0    11    0.09    98  2011    48  1987    1.72 1986
 3     86    65    75     0    10    0.10    98  2011    50  1987    5.30 1898
 4     86    65    75     0    10    0.10   101  1954    51  1952    1.09 1981
 5     86    64    75     0    10    0.10   103  1954    50  2010    5.49 2011

 6     85    64    75     0    10    0.10   101  1954    47  1984    1.33 1981
 7     85    64    74     0    10    0.11   102  1925    47  1984    2.52 1977
 8     85    64    74     0     9    0.11    96  1941    46  1984    1.28 2008
 9     85    63    74     0     9    0.12   100  1925    46  1984    1.42 1968
 10    84    63    74     0     9    0.12    97  2019    48  1924    2.27 1877

 11    84    63    73     0     9    0.13    96  1925    47  1993    1.74 2010
 12    84    63    73     0     8    0.13    94  2019    45  1940    1.10 1987
 13    84    62    73     0     8    0.14    97  2019    47  1940    1.85 1957
 14    83    62    72     0     8    0.13    96  1998    42  1902    1.30 1945
 15    83    62    72     0     8    0.12    96  1927    41  1985    3.31 1989

 16    83    61    72     0     7    0.13    96  1927    43  1985    2.46 1962
 17    82    61    72     0     7    0.12    95  1931    45  1985    2.94 2012
 18    82    61    71     0     7    0.12    98  1931    45  1903    3.16 2012
 19    82    60    71     0     6    0.12    98  1925    42  1901    1.90 1969
 20    81    60    71     1     6    0.11    97  1925    43  1889    1.75 1932

 21    81    59    70     1     6    0.11    95  1955    42  1918    2.41 2002
 22    81    59    70     1     6    0.12    96  1955    38  1983    3.16 1907
 23    80    59    70     1     5    0.11    96  1931    40  1999    3.04 2006
 24    80    58    69     1     5    0.12    93  2007    37  1983    2.22 1902
 25    80    58    69     1     5    0.11    94  2016    38  1887    2.30 2024

 26    79    58    68     1     5    0.12    89  2019    41  2001    3.04 2009
 27    79    57    68     1     4    0.13    92  2019    38  1899    2.16 1880
 28    79    57    68     2     4    0.12    93  1939    37  1985    1.78 1872
 29    78    56    67     2     4    0.12    95  2019    37  1942    4.17 1944
 30    78    56    67     2     4    0.13    95  2019    35  1888    1.99 1915


 MO   82.5  61.1  71.8   17   220    3.49   103  1954    35  1888    5.49 2011

 DATE OF OCCURANCE IN MONTH                        (5)        (30)          (5)

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