Widespread showers and thunderstorms will continue to bring a flooding threat over the central and eastern Gulf Coast through Friday. Heavy rainfall is likely to persist over Florida into the weekend. Scattered strong to severe thunderstorms are expected over the Rio Grande Valley and over the Southern Appalachians Thursday afternoon and evening. Strong winds and hail will be the primary threats. Read More >
Annual Heat Index Statistics
The table below depicts the number of days each year where the heat index reached or exceeded each given threshold.
Year | >90 | >95 | >100 | >105 | >110 |
1950 | 23 | 6 | 2 | 0 | 0 |
1951 | 51 | 32 | 12 | 3 | 2 |
1952 | 69 | 43 | 29 | 13 | 3 |
1953 | 76 | 43 | 23 | 11 | 1 |
1954 | 80 | 57 | 29 | 10 | 2 |
1955 | 57 | 36 | 11 | 2 | 0 |
1956 | 58 | 25 | 13 | 6 | 0 |
1957 | 46 | 31 | 10 | 1 | 0 |
1958 | 53 | 29 | 9 | 1 | 0 |
1959 | 60 | 32 | 12 | 1 | 0 |
1960 | 58 | 27 | 11 | 3 | 0 |
1961 | 58 | 31 | 10 | 2 | 2 |
1962 | 68 | 36 | 18 | 4 | 1 |
1963 | 52 | 25 | 12 | 4 | 0 |
1964 | 67 | 40 | 24 | 6 | 1 |
1970 | 55 | 31 | 8 | 2 | 0 |
1971 | 68 | 40 | 19 | 9 | 4 |
1972 | 42 | 23 | 7 | 0 | 0 |
1973 | 70 | 35 | 8 | 1 | 0 |
1974 | 43 | 23 | 7 | 2 | 0 |
1975 | 68 | 39 | 9 | 0 | 0 |
1976 | 36 | 16 | 7 | 1 | 0 |
1977 | 65 | 42 | 26 | 11 | 5 |
1978 | 67 | 38 | 25 | 7 | 2 |
1979 | 56 | 33 | 13 | 0 | 0 |
1980 | 78 | 60 | 36 | 16 | 5 |
1981 | 56 | 36 | 18 | 10 | 1 |
1982 | 44 | 26 | 12 | 2 | 2 |
1983 | 73 | 56 | 28 | 13 | 3 |
1984 | 47 | 22 | 4 | 0 | 0 |
1985 | 48 | 25 | 8 | 0 | 0 |
1986 | 63 | 34 | 16 | 4 | 0 |
1987 | 80 | 54 | 24 | 7 | 2 |
1988 | 61 | 42 | 31 | 19 | 5 |
1989 | 57 | 38 | 21 | 5 | 0 |
1990 | 53 | 37 | 18 | 8 | 1 |
1991 | 70 | 47 | 21 | 2 | 1 |
1992 | 34 | 21 | 12 | 3 | 0 |
1993 | 65 | 53 | 34 | 14 | 4 |
1994 | 55 | 32 | 18 | 3 | 0 |
1995 | 70 | 49 | 30 | 16 | 7 |
1996 | 46 | 22 | 7 | 1 | 0 |
1997 | 42 | 27 | 9 | 5 | 1 |
1998 | 73 | 33 | 19 | 9 | 1 |
1999 | 50 | 34 | 16 | 8 | 2 |
2000 | 43 | 25 | 7 | 3 | 1 |
2001 | 53 | 31 | 15 | 4 | 0 |
2002 | 78 | 42 | 23 | 4 | 0 |
2003 | 36 | 26 | 10 | 2 | 0 |
2004 | 37 | 21 | 6 | 3 | 1 |
2005 | 67 | 34 | 11 | 5 | 0 |
2006 | 48 | 31 | 13 | 4 | 1 |
2007 | 72 | 31 | 17 | 6 | 1 |
2008 | 40 | 24 | 4 | 1 | 0 |
2009 | 31 | 17 | 7 | 1 | 0 |
2010 | 82 | 51 | 31 | 13 | 2 |
2011 | 64 | 40 | 23 | 8 | 4 |
2012 | 74 | 36 | 22 | 15 | 3 |
2013 | 46 | 27 | 9 | 1 | 0 |
2014 | 39 | 21 | 9 | 1 | 1 |
2015 | 51 | 24 | 8 | 4 | 1 |
2016 | 72 | 46 | 16 | 2 | 0 |
2017 | 46 | 18 | 6 | 2 | 0 |
2018 | 85 | 46 | 16 | 4 | 0 |
2019 | 68 | 36 | 7 | 1 | 0 |
2020 | 48 | 26 | 4 | 0 | 0 |
2021 | 55 | 34 | 10 | 2 | 0 |
2022 | 53 | 29 | 19 | 7 | 3 |
2023 | 41 | 24 | 14 | 8 | 2 |
Total: | 3940 | 2301 | 1043 | 346 | 78 |
Avg per year | 57 | 33 | 15 | 5 | 1 |
Most in 1 Year | 85 (2018) | 60 (1980) | 36 (1980) | 19 (1988) | 7 (1995) |
Least in 1 Year | 23 (1950) | 6 (1950) | 2 (1950) | 0 (7 yrs, most recently 2020) | 0 (36 yrs, most recently 2023) |
Period of Record: January 1, 1950 - September 1, 2023
(**No heat index data for 1965-1969)
Highest Heat Index By Year
Year | Date | Heat Index |
1950 | 6/25/1950 | 104 |
1951 | 8/30/1951 | 112 |
1952 | 6/29/1952 | 114 |
1953 | 6/20/1953 | 111 |
1954 | 7/14/1954 | 115 |
1955 | 7/27/1955 7/28/1955 | 106 |
1956 | 7/27/1956 8/5/1956 | 108 |
1957 | 7/4/1957 | 106 |
1958 | 7/27/1958 | 106 |
1959 | 7/29/1959 | 106 |
1960 | 6/22/1960 8/3/1960 8/6/1960 | 106 |
1961 | 7/29/1961 | 111 |
1962 | 7/14/1962 | 110 |
1963 | 8/3/1963 | 109 |
1964 | 8/3/1964 | 112 |
1970 | 7/2/1970 | 106 |
1971 | 6/27/1971 7/8/1971 | 111 |
1972 | 8/18/1972 8/19/1972 | 103 |
1973 | 7/3/1973 | 107 |
1974 | 7/15/1974 | 106 |
1975 | 9/3/1975 | 104 |
1976 | 7/14/1976 | 106 |
1977 | 7/17/1977 | 113 |
1978 | 6/26/1978 6/27/1978 | 110 |
1979 | 8/7/1979 8/8/1979 | 103 |
1980 | 7/9/1980 7/15/1980 | 112 |
1981 | 6/9/1981 | 111 |
1982 | 8/4/1982 | 111 |
1983 | 7/20/1983 7/21/1983 | 111 |
1984 | 7/9/1984 | 104 |
1985 | 7/13/1985 | 103 |
1986 | 7/16/1986 | 106 |
1987 | 8/3/1987 | 118 |
1988 | 7/17/1988 8/16/1988 | 114 |
1989 | 8/5/1989 | 109 |
1990 | 7/8/1990 | 110 |
1991 | 6/30/1991 | 110 |
1992 | 8/9/1992 | 109 |
1993 | 7/26/1993 | 113 |
1994 | 6/21/1994 | 107 |
1995 | 8/15/1995 8/18/1995 | 113 |
1996 | 7/19/1996 | 106 |
1997 | 7/26/1997 | 112 |
1998 | 7/19/1998 | 112 |
1999 | 7/30/1999 | 114 |
2000 | 8/9/2000 | 110 |
2001 | 7/7/2001 7/8/2001 | 107 |
2002 | 7/9/2002 7/21/2002 8/4/2002 | 106 |
2003 | 8/22/2003 | 107 |
2004 | 7/22/2004 | 111 |
2005 | 7/21/2005 7/24/2005 | 109 |
2006 | 8/10/2006 | 110 |
2007 | 8/8/2007 | 110 |
2008 | 7/21/2008 | 106 |
2009 | 6/22/2009 | 106 |
2010 | 8/3/2010 | 112 |
2011 | 7/12/2011 | 116 |
2012 | 7/1/2012 7/19/2012 7/24/2012 | 110 |
2013 | 8/31/2013 | 105 |
2014 | 8/23/2014 | 110 |
2015 | 7/29/2015 | 110 |
2016 | 6/16/2016 7/23/2016 | 106 |
2017 | 7/21/2017 7/22/2017 | 106 |
2018 | 7/4/2018 | 108 |
2019 | 7/10/2019 | 106 |
2020 | 8/10/2020 | 104 |
2021 | 8/10/2021 | 106 |
2022 | 6/13/2022 7/5/2022 7/20/2022 |
110 |
2023 | 8/25/2023 | 114 |
Period of Record: January 1, 1950 - September 1, 2023
(**No heat index data for 1965-1969)
Date | Heat Index |
8/3/1987 | 118 |
7/12/2011 | 116 |
7/14/1954 | 115 |
8/25/2023 | 114 |
7/11/2011 | 114 |
7/30/1999 | 114 |
7/17/1988 | 114 |
8/16/1988 | 114 |
6/29/1952 | 114 |
7/26/1993 | 113 |
8/15/1995 | 113 |
8/18/1995 | 113 |
8/2/1987 | 113 |
8/15/1988 | 113 |
7/17/1977 | 113 |
8/3/2010 | 112 |
8/3/2011 | 112 |
7/28/1993 | 112 |
8/25/1993 | 112 |
7/14/1995 | 112 |
7/26/1997 | 112 |
7/19/1998 | 112 |
7/29/1999 | 112 |
7/9/1980 | 112 |
7/15/1980 | 112 |
8/17/1988 | 112 |
8/18/1988 | 112 |
7/15/1977 | 112 |
7/16/1977 | 112 |
8/3/1964 | 112 |
8/30/1951 | 112 |
8/24/2023 | 111 |
7/22/2004 | 111 |
7/13/1995 | 111 |
8/19/1995 | 111 |
7/8/1980 | 111 |
6/9/1981 | 111 |
8/4/1982 | 111 |
7/20/1983 | 111 |
7/21/1983 | 111 |
6/27/1971 | 111 |
7/8/1971 | 111 |
7/8/1977 | 111 |
7/29/1961 | 111 |
8/31/1951 | 111 |
6/20/1953 | 111 |
7/20/2022 | 110 |
7/5/2022 | 110 |
6/13/2022 | 110 |
8/4/2010 | 110 |
7/20/2011 | 110 |
7/1/2012 | 110 |
7/19/2012 | 110 |
7/24/2012 | 110 |
8/23/2014 | 110 |
7/29/2015 | 110 |
8/9/2000 | 110 |
8/10/2006 | 110 |
8/8/2007 | 110 |
7/8/1990 | 110 |
6/30/1991 | 110 |
7/18/1993 | 110 |
8/12/1995 | 110 |
8/17/1995 | 110 |
7/11/1980 | 110 |
7/16/1980 | 110 |
8/5/1982 | 110 |
7/1/1983 | 110 |
6/25/1971 | 110 |
7/13/1971 | 110 |
7/18/1977 | 110 |
6/26/1978 | 110 |
6/27/1978 | 110 |
7/30/1961 | 110 |
7/14/1962 | 110 |
6/30/1952 | 110 |
7/27/1952 | 110 |
7/13/1954 | 110 |
(**No heat index data for 1965-1969)
Date | Heat Index |
8/30/1951 | 112 |
8/31/1951 | 111 |
6/29/1952 | 114 |
6/30/1952 | 110 |
7/27/1952 | 110 |
6/20/1953 | 111 |
7/13/1954 | 110 |
7/14/1954 | 115 |
7/29/1961 | 111 |
7/30/1961 | 110 |
7/14/1962 | 110 |
8/3/1964 | 112 |
6/25/1971 | 110 |
6/27/1971 | 111 |
7/8/1971 | 111 |
7/13/1971 | 110 |
7/8/1977 | 111 |
7/15/1977 | 112 |
7/16/1977 | 112 |
7/17/1977 | 113 |
7/18/1977 | 110 |
6/26/1978 | 110 |
6/27/1978 | 110 |
7/8/1980 | 111 |
7/9/1980 | 112 |
7/11/1980 | 110 |
7/15/1980 | 112 |
7/16/1980 | 110 |
6/9/1981 | 111 |
8/4/1982 | 111 |
8/5/1982 | 110 |
7/1/1983 | 110 |
7/20/1983 | 111 |
7/21/1983 | 111 |
8/2/1987 | 113 |
8/3/1987 | 118 |
7/17/1988 | 114 |
8/15/1988 | 113 |
8/16/1988 | 114 |
8/17/1988 | 112 |
8/18/1988 | 112 |
7/8/1990 | 110 |
6/30/1991 | 110 |
7/18/1993 | 110 |
7/26/1993 | 113 |
7/28/1993 | 112 |
8/25/1993 | 112 |
7/13/1995 | 111 |
7/14/1995 | 112 |
8/12/1995 | 110 |
8/15/1995 | 113 |
8/17/1995 | 110 |
8/18/1995 | 113 |
8/19/1995 | 111 |
7/26/1997 | 112 |
7/19/1998 | 112 |
7/29/1999 | 112 |
7/30/1999 | 114 |
8/9/2000 | 110 |
7/22/2004 | 111 |
8/10/2006 | 110 |
8/8/2007 | 110 |
8/3/2010 | 112 |
8/4/2010 | 110 |
7/11/2011 | 114 |
7/12/2011 | 116 |
7/20/2011 | 110 |
8/3/2011 | 112 |
7/1/2012 | 110 |
7/19/2012 | 110 |
7/24/2012 | 110 |
8/23/2014 | 110 |
7/29/2015 | 110 |
6/13/2022 | 110 |
7/5/2022 | 110 |
7/20/2022 | 110 |
8/24/2023 | 111 |
8/25/2023 | 114 |
Period of Record: January 1, 1950 - September 1, 2023
(**No heat index data for 1965-1969)