Indianapolis, IN: August

31 August 2026: August 2026 averaged 75.4°F in Indianapolis, IN, the warmest August since 2021, tied 37th warmest of 156 (with 2001 and 1930).

August 2026

Mean temperature: 75.4°F; Warmest since 2021; 37th warmest of 156
Precipitation: 7.33 in; Wettest since 1989; 4th wettest of 156

A normal August in Indianapolis, IN (1991 to 2020): a mean temperature of 74.9°F, between 71.8°F and 78.3°F in eight years of ten and 2.99 in of precipitation, between 1.39 in and 5.09 in in eight years of ten.

The mean temperature of every August in Indianapolis, IN since 1871: 75.4°F in 2026; the highest is 80.5°F, in 1936.

Normal range, 71.8 to 78.3°F

Every year, ranked, as a table

Every August in Indianapolis, IN from 1871 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank
2026	75.4	37	84.2	66	66.6	29	7.33	4
2025	73.8	84	83.3	95	64.3	75	1.31	140
2024	75.3	40	85.1	40	65.5	44	2.10	113
2023	74.5	63	83.5	87	65.4	50	2.97	72
2022	75	47	84.5	54	65.5	44	4.44	41
2021	77.5	12	86.9	14	68.2	13	1.99	117
2020	74.1	77	83.7	84	64.5	69	2.09	114
2019	74.7	56	84	72	65.4	50	3.54	57
2018	75.9	31	84.5	54	67.2	24	4.28	42
2017	73	102	82.9	103	63.2	100	1.77	126
2016	78.2	9	86.2	25	70.1	2	7.32	5
2015	72.9	106	82.5	113	63.2	100	1.55	131
2014	73.8	84	82.6	109	65	59	2.95	74
2013	74.9	49	84.9	46	65	59	1.15	145
2012	74.9	49	86.1	26	63.6	87	6.51	10
2011	76.9	20	87.9	11	65.9	37	1.11	146
2010	79.5	5	90.3	3	68.8	12	0.37	156
2009	73	102	82	119	64	79	4.94	30
2008	73.8	84	83.5	87	64.2	77	1.83	123
2007	79.9	3	90	4	69.9	6	3.43	60
2006	75	47	83.4	93	66.6	29	3.01	69
2005	76.6	22	85.5	33	67.7	16	4.20	44
2004	69.8	150	78.9	152	60.6	144	4.73	33
2003	74.9	49	83.9	77	65.8	39	4.64	36
2002	77.4	14	86.7	19	68.1	14	1.42	135
2001	75.4	37	85.2	38	65.6	43	2.47	101
2000	73.6	88	82.6	109	64.6	68	4.26	43
1999	72.3	119	83.3	95	61.4	129	1.50	132
1998	75.3	40	84.5	54	66.1	36	3.66	54
1997	71.6	135	80.8	143	62.3	118	2.96	73
1996	74.9	49	84.1	69	65.7	40	2.27	110
1995	79.6	4	89.4	5	69.7	7	4.16	45
1994	71.8	130	82.5	113	61	137	2.59	91
1993	75.3	40	85.3	36	65.3	53	6.42	11
1992	69.4	152	79.4	151	59.5	151	1.42	135
1991	75.2	43	86.1	26	64.2	77	3.54	57
1990	72.5	112	83.5	87	61.4	129	4.46	39
1989	71.8	130	81	141	62.6	115	8.05	2
1988	77.5	12	88.5	8	66.4	32	1.46	134
1987	73.6	88	84.3	62	62.9	109	0.86	150
1986	70.1	148	81.3	136	58.9	153	1.18	143
1985	71.2	140	80.5	147	61.8	124	5.29	22
1984	74.2	75	84.5	54	64	79	3.27	63
1983	80.1	2	91.1	1	69.1	10	2.79	81
1982	71.7	133	82.5	113	60.8	140	1.00	148
1981	72.8	108	82.2	118	63.3	96	1.69	128
1980	76.6	22	86.7	19	66.5	31	8.34	1
1979	72.3	119	81.3	136	63.4	94	6.09	12
1978	74.9	49	84.5	54	65.4	50	6.89	7
1977	74	82	83.2	97	64.7	65	4.47	38
1976	71.2	140	82.4	116	60.1	149	7.95	3
1975	76.1	30	84.9	46	67.3	22	4.68	35
1974	71.8	130	81.4	132	62.2	119	5.63	20
1973	74.4	67	84.9	46	63.9	83	2.74	83
1972	73.1	100	83.2	97	63	107	2.94	75
1971	71.2	140	82	119	60.5	145	1.93	120
1970	74.2	75	84.8	53	63.6	87	1.82	124
1969	72.6	111	83.9	77	61.4	129	2.98	70
1968	74.4	67	84	72	64.9	62	4.45	40
1967	71.1	144	81.8	124	60.4	148	2.38	108
1966	73.1	100	85.1	40	61.2	133	1.31	140
1965	71.1	144	81.7	125	60.5	145	3.25	64
1964	72.5	112	84.4	60	60.5	145	0.68	151
1963	68.9	154	79.7	149	58	156	2.22	112
1962	72.4	116	83	102	61.7	125	5.78	18
1961	71.4	137	81.6	129	61.1	135	2.70	86
1960	74.1	77	84.4	60	63.8	84	1.78	125
1959	77.3	15	86.8	15	67.7	16	2.56	92
1958	71.9	129	82	119	61.7	125	3.12	67
1957	73.3	95	83.8	79	62.9	109	3.89	50
1956	73	102	83.6	85	62.4	117	2.55	93
1955	75.9	31	87.4	12	64.4	72	1.21	142
1954	73.5	91	83.5	87	63.6	87	2.73	85
1953	74.3	69	86.4	22	62.2	119	1.76	127
1952	72.9	106	85	42	60.9	139	2.46	103
1951	72	125	83.2	97	60.8	140	2.43	105
1950	70.2	147	81.4	132	58.9	153	4.08	47
1949	73.8	84	84	72	63.5	91	6.64	9
1948	73.6	88	86.1	26	61.2	133	1.04	147
1947	79	7	89.1	6	69	11	5.22	25
1946	69	153	79.7	149	58.4	155	2.52	95
1945	72.1	123	82.6	109	61.6	127	2.80	79
1944	74.1	77	85	42	63.3	96	1.98	118
1943	74.5	63	85.6	32	63.4	94	2.42	106
1942	74.1	77	83.2	97	65	59	2.98	70
1941	76.3	27	87.1	13	65.5	44	1.40	137
1940	77	16	86.8	15	67.1	26	2.91	76
1939	74.6	58	84.2	66	65.1	58	2.91	76
1938	77	16	86.4	22	67.7	16	2.53	94
1937	77	16	86.8	15	67.3	22	3.46	59
1936	80.5	1	91	2	70	4	2.49	96
1935	75.6	35	84.5	54	66.8	27	4.99	27
1934	74.3	69	83.2	97	65.3	53	2.49	96
1933	73.5	91	83.5	87	63.5	91	1.97	119
1932	75.2	43	84.9	46	65.5	44	3.17	65
1931	74.6	58	83.6	85	65.7	40	4.70	34
1930	75.4	37	85.7	31	65.2	55	2.08	116
1929	72.3	119	81.6	129	63.1	102	2.49	96
1928	74.5	63	84.3	62	64.8	63	3.81	52
1927	68.2	155	77.3	155	59.2	152	2.64	89
1926	75.8	34	83.8	79	67.8	15	4.97	29
1925	74.3	69	84.3	62	64.4	72	3.82	51
1924	73.4	93	82.9	103	64	79	4.77	32
1923	73.2	97	82.6	109	63.8	84	4.83	31
1922	74.3	69	84	72	64.7	65	2.45	104
1921	73.2	97	82	119	64.4	72	7.26	6
1920	72	125	80.9	142	63.1	102	1.85	122
1919	73.2	97	82.8	106	63.6	87	3.43	60
1918	78.3	8	86.7	19	70	4	2.24	111
1917	72.5	112	81.7	125	63.3	96	1.48	133
1916	76.6	22	86.1	26	67.2	24	2.47	101
1915	67.5	156	75.4	156	59.6	150	5.25	23
1914	74.6	58	83.8	79	65.5	44	5.58	21
1913	76.3	27	85.9	30	66.7	28	4.98	28
1912	72	125	80.6	145	63.3	96	3.12	67
1911	74.1	77	83.8	79	64.5	69	1.16	144
1910	72.8	108	82.4	116	63.1	102	2.75	82
1909	74.9	49	85	42	64.8	63	2.80	79
1908	74.6	58	85.4	35	63.8	84	1.67	129
1907	72.5	112	81.5	131	63.5	91	2.33	109
1906	76.4	25	85.3	36	67.4	20	5.23	24
1905	74.3	69	83.4	93	65.2	55	2.74	83
1904	71.4	137	81.7	125	61.1	135	2.48	99
1903	72.2	122	81.2	138	63.1	102	3.92	48
1902	71.6	135	80.6	145	62.5	116	2.09	114
1901	75.1	45	84.9	46	65.2	55	3.57	56
1900	79.3	6	88.5	8	70.2	1	3.32	62
1899	76.4	25	86.3	24	66.4	32	5.82	15
1898	74.6	58	83.5	87	65.7	40	2.63	90
1897	72.4	116	82.7	107	62.1	121	0.42	155
1896	74.7	56	84.9	46	64.5	69	3.91	49
1895	76.2	29	88.2	10	64.3	75	1.91	121
1894	74.8	55	86.8	15	62.8	111	1.66	130
1893	73.4	93	85.5	33	61.3	132	0.61	152
1892	74.3	69	83.8	79	64.7	65	1.39	138
1891	72.1	123	81.4	132	62.8	111	5.79	17
1890	71.1	144	80.7	144	61.5	128	5.00	26
1889	71.4	137	82	119	60.7	143	0.54	153
1888	72.8	108	82.9	103	62.8	111	5.84	14
1887	73	102	84	72	62.1	121	3.15	66
1886	74	82	84.1	69	64	79	6.70	8
1885	71.2	140	81.4	132	61	137	5.82	15
1884	72	125	81.2	138	62.8	111	0.46	154
1883	69.8	150	78.8	153	60.8	140	2.48	99
1882	73.3	95	81.2	138	65.5	44	4.51	37
1881	78	10	88.6	7	67.4	20	0.97	149
1880	75.6	35	85	42	66.3	34	2.67	88
1879	71.7	133	80.5	147	63	107	5.71	19
1878	75.1	45	84.2	66	65.9	37	2.42	106
1877	72.4	116	81.7	125	63.1	102	4.13	46
1876	74.5	63	82.7	107	66.3	34	5.86	13
1875	69.9	149	77.7	154	62	123	3.66	54
1874	76.9	20	84.3	62	69.5	8	2.90	78
1873	75.9	31	84.1	69	67.7	16	1.32	139
1872	77.7	11	85.2	38	70.1	2	2.69	87
1871	77	16	84.9	46	69.2	9	3.69	53

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1936	80.5
1983	80.1
2007	79.9
1995	79.6
2010	79.5
1900	79.3
1947	79
1918	78.3
2016	78.2
1881	78

Coldest
Year	Mean, °F
1915	67.5
1927	68.2
1963	68.9
1946	69
1992	69.4
2004	69.8
1883	69.8
1875	69.9
1986	70.1
1950	70.2

Wettest
Year	Precipitation, in
1980	8.34
1989	8.05
1976	7.95
2026	7.33
2016	7.32
1921	7.26
1978	6.89
1886	6.70
1949	6.64
2012	6.51

Driest
Year	Precipitation, in
2010	0.37
1897	0.42
1884	0.46
1889	0.54
1893	0.61
1964	0.68
1987	0.86
1881	0.97
1982	1.00
1948	1.04

The hottest, coldest and wettest days

Hottest day: 92°F; 31 August 2026
Coldest night: 57°F; 24 August 2026
Wettest day: 2.09 in; 1 August 2026

Every month, season and year

Months

Seasons

Years

Indianapolis, IN the day's answers

All-time records

Every answer in words

August 2026 brought 7.33 in of precipitation in Indianapolis, IN, the wettest August since 1989, 4th wettest of 156.
The hottest day of August 2026 in Indianapolis, IN: 92°F on Monday 31 August 2026.
The coldest night of August 2026 in Indianapolis, IN: a low of 57°F on Monday 24 August 2026.
The wettest day of August 2026 in Indianapolis, IN: 2.09 in on Saturday 1 August 2026.