National Weather Service United States Department of Commerce

Arctic Outbreak Early Next Week. Be Prepared for the Frigid Cold Temperatures.

An outbreak of Arctic Air will plunge into the Tennessee Valley and southern Appalachians late this weekend and early next week. Light snow accumulations are also expected Sunday and Sunday night especially across the mountains. Be prepared for the cold weather. Read More >

                                 CHATTANOOGA TN
                            DAILY NORMALS AND RECORDS
                                    SEPTEMBER

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

 1     88    68    78     0    13    0.11   100  1957    49  1946    2.62 1950
 2     88    68    78     0    13    0.12   100  2011    53  1987    4.30 1898
 3     88    68    78     0    12    0.12   100  1954    51  1952    1.38 2003
 4     87    67    77     0    12    0.12   102  1954    51  1952    2.99 1986
 5     87    67    77     0    12    0.12   104  1925    52  1997    9.49 2011

 6     87    67    77     0    12    0.13   103  1925    53  2010    1.78 1890
 7     87    66    76     0    12    0.14   104  1925    51  2017    6.37 1977
 8     86    66    76     0    11    0.13   100  1925    52  2017    1.16 1884
 9     86    66    76     0    11    0.14   102  1925    49  1958    2.64 1997
 10    86    66    76     0    11    0.15    98  2019    50  1998    2.15 1950

 11    86    65    76     0    10    0.15    96  2010    46  1940    1.83 2017
 12    85    65    75     0    10    0.15    98  2019    40  1940    2.00 1965
 13    85    65    75     0    10    0.16   103  2019    41  1940    3.59 1973
 14    85    64    75     0    10    0.15    98  1939    42  1953    3.92 1957
 15    85    64    74     0     9    0.14    97  2019    46  1985    2.06 1977

 16    84    64    74     0     9    0.15    98  2019    47  1904    5.24 2004
 17    84    63    74     0     9    0.14   100  2019    49  1985    3.01 1971
 18    84    63    73     0     9    0.14    98  1927    47  1981    3.65 2012
 19    84    63    73     0     8    0.15   100  1925    42  1981    2.26 2021
 20    83    62    73     0     8    0.13    99  1925    40  1889    3.37 2009

 21    83    62    72     0     8    0.14    98  1955    44  1956    3.37 2009
 22    83    62    72     0     7    0.14    96  1940    41  1913    3.04 1909
 23    82    61    72     0     7    0.15    96  2024    40  1982    3.59 1975
 24    82    61    71     0     7    0.14    94  2016    41  1963    3.91 2020
 25    82    60    71     0     6    0.15    97  2016    41  1887    1.74 2002

 26    81    60    71     1     6    0.15    96  2019    42  1940    1.82 2009
 27    81    60    70     1     6    0.15    95  2019    38  1940    3.92 1979
 28    81    59    70     1     6    0.16    94  1954    39  1947    1.62 1907
 29    80    59    70     1     6    0.15    95  2019    37  1942    2.24 1989
 30    80    58    69     1     5    0.16    97  2019    36  1967    4.12 1915


 MO   84.3  63.6  73.9    7   276    4.23   104  1925    36  1967    9.49 2011

 DATE OF OCCURANCE IN MONTH                      (5,7)        (30)          (5)