National Weather Service United States Department of Commerce

Central U.S. Severe Storms and Heavy Rain; Western Fire Weather Threats

A strong system will produce a swath of impacts. Severe storms with large hail, damaging winds, and a couple of tornadoes will be possible in the south and central Plains. Heavy rain could cause flash flooding in the Mid Mississippi Valley. Mountain snow will develop in the Rockies. Critical fire weather threats are expected across northern California and the Southwest. Read More >

                                  TRI-CITIES TN
                            DAILY NORMALS AND RECORDS
                                     AUGUST

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

 1     86    65    75     0    10    0.15    95  1953    51  1997    1.60 1948
 2     86    65    75     0    10    0.14    96  2006    55  1997    1.53 2003
 3     86    65    75     0    10    0.15    97  1944    52  1998    1.60 1947
 4     86    64    75     0    10    0.15    96  2010    52  1976    0.73 1948
 5     86    64    75     0    10    0.15    96  2011    51  1950    1.85 1942

 6     86    64    75     0    10    0.15    94  1955    51  2004    1.18 1990
 7     86    64    75     0    10    0.14    94  1944    47  2004    3.50 2003
 8     86    64    75     0    10    0.15    96  1987    48  1989    1.97 1938
 9     86    64    75     0    10    0.13    97  1980    47  1989    1.12 1982
 10    86    64    75     0    10    0.14    98  1980    52  1989    0.93 1968

 11    86    64    75     0    10    0.13    95  1980    51  1962    2.38 1957
 12    86    64    75     0    10    0.12    96  2016    51  2008    1.17 2004
 13    86    64    75     0    10    0.12    96  2016    51  1964    1.57 2013
 14    86    64    75     0    10    0.12    97  1988    51  1967    2.47 1940
 15    86    64    75     0    10    0.12    98  1995    50  1964    2.24 2017

 16    86    63    75     0    10    0.11    98  1995    47  1979    1.93 2003
 17    86    63    75     0    10    0.11   100  1988    49  1979    1.39 1985
 18    86    63    75     0    10    0.12   101  1988    53  1943    2.04 2015
 19    86    63    74     0    10    0.11    96  2007    52  1943    2.14 1960
 20    86    63    74     0     9    0.12    94  2007    51  1943    2.00 1963

 21    86    63    74     0     9    0.11    98  1983    53  2012    1.36 2016
 22    86    63    74     0     9    0.11    96  1983    47  1956    1.59 2010
 23    86    63    74     0     9    0.11    99  2007    49  1997    1.49 1970
 24    86    62    74     0     9    0.10    97  2007    48  1997    1.80 2000
 25    85    62    74     0     9    0.11    96  1943    50  1942    0.73 2002

 26    85    62    74     0     9    0.10    95  1959    50  1942    1.48 2008
 27    85    62    74     0     9    0.11    95  2016    46  1945    1.17 1983
 28    85    62    73     0     8    0.10    94  1953    48  1986    0.85 1949
 29    85    62    73     0     8    0.09    96  1953    43  1986    0.79 1950
 30    85    61    73     0     8    0.10    95  1953    46  1986    2.26 1940

 31    85    61    73     0     8    0.09    98  1953    47  1946    2.07 2006

 MO   85.8  63.2  74.5    1   295    3.76   101  1988    43  1986    3.50 2003

 DATE OF OCCURANCE IN MONTH                       (18)        (29)          (7)