National Weather Service United States Department of Commerce

Storms in the Plains; Heat Wave to Begin in the Northern Tier

A slow moving weather system will bring potential for scattered strong to severe storms with damaging wind and hail with areas of locally heavy rain in the South and Central Plains through Monday. A heat wave is expected to begin across the Northern Plains, Upper Midwest, and northern Great Basin with temperatures reaching over 20 degrees above normal in some areas. Read More >

                                  TRI-CITIES TN
                            DAILY NORMALS AND RECORDS
                                       MAY

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

 1     74    48    61     5     1    0.12    89  1942    32  1996    1.04 1989
 2     74    48    61     5     1    0.12    89  2010    30  1963    1.10 1950
 3     74    49    61     5     1    0.12    89  1942    32  2005    1.08 2010
 4     75    49    62     5     1    0.11    88  1938    30  1986    1.18 1948
 5     75    49    62     4     1    0.12    89  1949    30  1940    1.87 1958

 6     75    49    62     4     1    0.12    88  1949    35  1968    2.34 1958
 7     75    50    62     4     2    0.12    88  2014    32  2020    2.28 1984
 8     75    50    63     4     2    0.12    91  1940    30  1989    1.20 1975
 9     76    50    63     4     2    0.12    88  2015    30  1947    1.06 2003
 10    76    51    63     4     2    0.12    88  2015    32  2020    1.13 2011

 11    76    51    63     4     2    0.11    89  2015    33  1997    1.36 1950
 12    76    51    64     4     2    0.13    89  2000    34  2020    1.99 1950
 13    76    51    64     3     2    0.13    91  2014    34  1969    1.90 1995
 14    77    52    64     3     2    0.12    88  2018    33  1996    1.37 2012
 15    77    52    64     3     2    0.13    91  1962    35  2016    1.31 1992

 16    77    52    65     3     3    0.12    91  1962    30  1997    1.36 1963
 17    77    53    65     3     3    0.12    91  1962    34  1984    1.06 1990
 18    78    53    65     3     3    0.13    92  1962    34  1973    0.90 1993
 19    78    53    65     2     3    0.13    91  1962    35  2002    1.76 2018
 20    78    53    66     2     3    0.12    89  1962    32  2002    1.36 1942

 21    78    54    66     2     3    0.13    93  1941    37  2002    1.10 1947
 22    78    54    66     2     3    0.12    94  1941    31  2002    1.14 1972
 23    79    54    66     2     3    0.13    91  1953    37  2002    0.90 1973
 24    79    55    67     2     4    0.13    88  2019    40  2006    1.28 1938
 25    79    55    67     2     4    0.12    90  1953    40  2013    1.69 1943

 26    79    55    67     2     4    0.13    91  2012    39  1988    2.86 1997
 27    80    56    68     1     4    0.13    91  2012    38  1961    1.14 1973
 28    80    56    68     1     4    0.12    92  1941    37  1961    1.33 1990
 29    80    56    68     1     4    0.13    92  1941    44  2005    1.24 1976
 30    80    56    68     1     4    0.12    93  2011    39  1984    1.13 1972

 31    80    57    68     1     4    0.13    94  2011    38  1984    1.06 2004

 MO   77.1  52.3  64.7   91    81    3.82    94  1941    30  1963    2.86 1997
                                                 2011        1986              
                                                             1940              
                                                             1989              
                                                             1947              
                                                             1997              

 DATE OF OCCURANCE IN MONTH                    (22,31) (2,4,5,8,9,16)         (26)