Heat Index Climatology for Cape Girardeau, MO

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
1973	76	54	26	11	5
1974	62	46	27	14	3
1975	73	55	29	11	5
1976	44	28	13	3	0
1977	81	56	30	15	6
1978	84	51	30	10	1
1979	58	40	24	12	0
1980	75	62	42	25	15
1981	55	32	16	12	4
1982	56	34	19	11	4
1983	82	63	39	22	8
1984	66	45	24	11	2
1985	60	42	21	9	4
1986	74	51	31	15	3
1987	83	58	30	12	7
1988	68	49	33	20	10
1989	58	41	24	13	2
1990	61	44	33	18	3
1991	82	50	25	5	0
1992	43	29	14	3	1
1993	71	54	32	8	2
1994	42	23	9	1	0
1995	51	36	20	8	1
1996	64	36	14	4	1
1997	55	34	15	7	3
1998	89	58	27	15	5
1999	71	50	37	18	9
2000	58	39	17	10	0
2001	66	51	21	13	3
2002	79	46	20	7	0
2003	48	32	20	7	2
2004	49	29	12	7	1
2005	83	62	36	18	12
2006	59	43	23	9	0
2007	71	38	16	4	0
2008	49	28	11	5	0
2009	38	20	11	3	0
2010	91	65	44	27	8
2011	74	58	32	12	5
2012	81	50	30	16	1
2013	55	35	16	2	0
2014	55	31	17	7	1
2015	68	37	20	6	3
2016	83	57	32	4	1
2017	59	29	11	3	0
2018	98	56	23	4	0
2019	79	50	25	6	2
2020	70	41	21	2	0
2021	60	46	19	8	1
2022	76	53	35	24	10
2023	64	41	28	18	12
Total:	3397	2258	1224	535	166
Avg per year	67	44	24	10	3
Most in 1 year	98 (2018)	65 (2010)	44 (2010)	27 (2010)	15 (1980)
Least in 1 year	38 (2009)	20 (2009)	9 (1994)	1 (1994)	0 (14 yrs, most recently in 2020)

Period of Record: January 1, 1973 - September 1, 2023

Highest Heat Index By Year

Year	Date	Heat Index
1973	7/1/1973 7/21/1973	116
1974	7/19/1974 7/21/1974	112
1975	9/2/1975	113
1976	7/12/1976 7/24/1976 7/26/1976	105
1977	7/13/1977 7/15/1977	114
1978	6/28/1978	110
1979	7/15/1979 8/5/1979 8/8/1979	108
1980	7/2/1980	123
1981	7/12/1981	118
1982	7/4/1982	119
1983	7/24/1983	116
1984	8/29/1984	116
1985	7/13/1985	117
1986	7/26/1986	113
1987	8/3/1987	119
1988	8/15/1988	119
1989	8/24/1989 8/28/1989	112
1990	7/4/1990	114
1991	7/22/1991	108
1992	8/9/1992	110
1993	8/17/1993	111
1994	6/22/1994	105
1995	8/19/1995	114
1996	7/19/1996	110
1997	7/27/1997	112
1998	8/25/1998	116
1999	7/29/1999	119
2000	8/9/2000 8/29/2000 8/30/2000	108
2001	7/7/2001	112
2002	7/21/2002	108
2003	8/22/2003	111
2004	7/13/2004	110
2005	8/2/2005	121
2006	7/20/2006	109
2007	8/9/2007 8/15/2007	109
2008	8/1/2008	107
2009	6/26/2009	107
2010	8/3/2010	120
2011	8/3/2011	119
2012	7/19/2012	110
2013	8/31/2013	107
2014	8/23/2014	110
2015	7/28/2015	112
2016	8/5/2016	110
2017	7/21/2017 7/26/2017	107
2018	7/5/2018 7/14/2018	107
2019	8/12/2019 8/20/2019	110
2020	7/15/2020 8/10/2020	107
2021	7/29/2021	113
2022	7/20/2022	123
2023	8/25/2023	120

Period of Record: January 1, 1973 - September 1, 2023

All Heat Index Readings of 110 or greater

Date	Heat Index
7/20/2022	123
7/2/1980	123
8/2/2005	121
7/14/1980	121
8/25/2023	120
8/3/2010	120
8/24/2023	119
6/30/2023	119
8/3/2011	119
7/29/1999	119
8/15/1988	119
8/3/1987	119
7/4/1982	119
8/19/1980	119
8/20/2023	118
7/22/2005	118
8/12/1999	118
8/2/1987	118
7/12/1981	118
8/21/2023	117
7/11/2011	117
7/24/1999	117
7/13/1985	117
8/22/2023	116
7/24/2022	116
7/24/2005	116
7/21/2005	116
7/30/1999	116
8/25/1998	116
7/14/1985	116
8/29/1984	116
7/24/1983	116
7/20/1982	116
7/10/1980	116
7/8/1980	116
7/6/1980	116
7/21/1973	116
7/1/1973	116
8/13/2010	115
8/4/2010	115
8/20/2005	115
8/19/2005	115
8/5/1982	115
7/9/1980	115
6/28/1980	115
7/22/2022	114
8/6/2011	114
7/12/2011	114
8/10/2010	114
8/19/1995	114
7/4/1990	114
8/16/1988	114
7/30/1985	114
7/20/1983	114
7/16/1980	114
7/15/1977	114
7/13/1977	114
8/23/2023	113
7/28/2023	113
7/27/2023	113
6/29/2023	113
7/29/2021	113
8/14/2010	113
8/26/2005	113
8/18/2005	113
7/25/2005	113
7/26/1999	113
7/25/1999	113
8/17/1988	113
8/3/1988	113
8/9/1987	113
7/26/1986	113
7/22/1983	113
7/21/1983	113
7/12/1980	113
7/5/1977	113
9/2/1975	113
6/25/2023	112
7/28/2015	112
7/10/2011	112
8/12/2010	112
8/9/2010	112
7/7/2001	112
7/23/1999	112
7/27/1997	112
8/28/1989	112
8/24/1989	112
8/18/1988	112
8/22/1987	112
7/28/1986	112
8/28/1983	112
8/24/1983	112
7/20/1981	112
7/31/1980	112
7/4/1980	112
7/21/1974	112
7/19/1974	112
7/20/1973	112
7/29/2023	111
8/8/2022	111
7/5/2022	111
6/13/2022	111
7/29/2015	111
7/27/2015	111
8/11/2010	111
7/26/2005	111
7/23/2005	111
8/22/2003	111
7/21/1999	111
7/3/1999	111
8/17/1993	111
7/8/1990	111
6/13/1990	111
7/17/1988	111
8/16/1987	111
8/1/1987	111
7/25/1986	111
7/3/1982	111
7/15/1980	111
7/11/1980	111
9/4/1975	111
9/3/1975	111
8/12/1975	111
7/23/1975	111
6/16/1973	111
7/23/2022	110
7/16/2022	110
7/7/2022	110
6/12/2022	110
8/20/2019	110
8/19/2019	110
8/5/2016	110
8/23/2014	110
7/19/2012	110
7/20/2005	110
7/13/2004	110
8/21/2003	110
7/9/2001	110
7/8/2001	110
7/21/1998	110
7/18/1998	110
7/7/1998	110
7/6/1998	110
7/28/1997	110
7/26/1997	110
7/19/1996	110
8/18/1993	110
8/9/1992	110
8/9/1988	110
7/16/1988	110
7/15/1988	110
7/14/1988	110
8/21/1987	110
7/12/1985	110
7/15/1984	110
8/5/1983	110
7/19/1983	110
7/11/1981	110
6/24/1981	110
8/1/1980	110
6/28/1978	110
7/14/1977	110
7/7/1977	110
7/6/1977	110
7/18/1974	110
7/23/1973	110

Period of Record: January 1, 1973 - September 1, 2023

All Heat Index Readings of 110 or greater by Year

Date	Heat Index
6/16/1973	111
7/1/1973	116
7/20/1973	112
7/21/1973	116
7/23/1973	110
7/18/1974	110
7/19/1974	112
7/21/1974	112
7/23/1975	111
8/12/1975	111
9/2/1975	113
9/3/1975	111
9/4/1975	111
7/5/1977	113
7/6/1977	110
7/7/1977	110
7/13/1977	114
7/14/1977	110
7/15/1977	114
6/28/1978	110
6/28/1980	115
7/2/1980	123
7/4/1980	112
7/6/1980	116
7/8/1980	116
7/9/1980	115
7/10/1980	116
7/11/1980	111
7/12/1980	113
7/14/1980	121
7/15/1980	111
7/16/1980	114
7/31/1980	112
8/1/1980	110
8/19/1980	119
6/24/1981	110
7/11/1981	110
7/12/1981	118
7/20/1981	112
7/3/1982	111
7/4/1982	119
7/20/1982	116
8/5/1982	115
7/19/1983	110
7/20/1983	114
7/21/1983	113
7/22/1983	113
7/24/1983	116
8/5/1983	110
8/24/1983	112
8/28/1983	112
7/15/1984	110
8/29/1984	116
7/12/1985	110
7/13/1985	117
7/14/1985	116
7/30/1985	114
7/25/1986	111
7/26/1986	113
7/28/1986	112
8/1/1987	111
8/2/1987	118
8/3/1987	119
8/9/1987	113
8/16/1987	111
8/21/1987	110
8/22/1987	112
7/14/1988	110
7/15/1988	110
7/16/1988	110
7/17/1988	111
8/3/1988	113
8/9/1988	110
8/15/1988	119
8/16/1988	114
8/17/1988	113
8/18/1988	112
8/24/1989	112
8/28/1989	112
6/13/1990	111
7/4/1990	114
7/8/1990	111
8/9/1992	110
8/17/1993	111
8/18/1993	110
8/19/1995	114
7/19/1996	110
7/26/1997	110
7/27/1997	112
7/28/1997	110
7/6/1998	110
7/7/1998	110
7/18/1998	110
7/21/1998	110
8/25/1998	116
7/3/1999	111
7/21/1999	111
7/23/1999	112
7/24/1999	117
7/25/1999	113
7/26/1999	113
7/29/1999	119
7/30/1999	116
8/12/1999	118
7/7/2001	112
7/8/2001	110
7/9/2001	110
8/21/2003	110
8/22/2003	111
7/13/2004	110
7/20/2005	110
7/21/2005	116
7/22/2005	118
7/23/2005	111
7/24/2005	116
7/25/2005	113
7/26/2005	111
8/2/2005	121
8/18/2005	113
8/19/2005	115
8/20/2005	115
8/26/2005	113
8/3/2010	120
8/4/2010	115
8/9/2010	112
8/10/2010	114
8/11/2010	111
8/12/2010	112
8/13/2010	115
8/14/2010	113
7/10/2011	112
7/11/2011	117
7/12/2011	114
8/3/2011	119
8/6/2011	114
7/19/2012	110
8/23/2014	110
7/27/2015	111
7/28/2015	112
7/29/2015	111
8/5/2016	110
8/12/2019	110
8/20/2019	110
7/29/2021	113
6/12/2022	110
6/13/2022	111
7/5/2022	111
7/7/2022	110
7/16/2022	110
7/20/2022	123
7/22/2022	114
7/23/2022	110
7/24/2022	116
8/8/2022	111
6/25/2023	112
6/29/2023	113
6/30/2023	119
7/27/2023	113
7/28/2023	113
7/29/2023	111
8/20/2023	118
8/21/2023	117
8/22/2023	116
8/23/2023	113
8/24/2023	119
8/25/2023	120

Period of Record: January 1, 1973 - September 1, 2023