Carbondale, IL: August

31 August 2026: August 2026 averaged 77.8°F in Carbondale, IL, the warmest August since 2011, 37th warmest of 118.

August 2026

Mean temperature: 77.8°F; Warmest since 2011; 37th warmest of 118
Precipitation: 2.54 in; Driest since 2025; 43rd driest of 119

A normal August in Carbondale, IL (1991 to 2020): a mean temperature of 76.5°F, between 72.7°F and 79°F in eight years of ten and 2.67 in of precipitation, between 1.54 in and 5.48 in in eight years of ten.

The mean temperature of every August in Carbondale, IL since 1900: 77.8°F in 2026; the highest is 84.9°F, in 1936.

Normal range, 72.7 to 79°F

Every year, ranked, as a table

Every August in Carbondale, IL from 1900 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	Days missing
2026	77.8	37	88.6	60	67	23	2.54	76	0
2025	75.1	89	87.7	76	62.5	91	0.02	119	0
2024	76.7	50	88	70	65.5	46	0.69	115	0
2023	76.5	60	86.1	90	66.9	25	5.63	20	0
2022	75.5	82	86.6	88	64.5	59	2.61	73	0
2021	77.3	45	88.2	65	66.5	32	2.04	93	0
2020	75.1	89	85	102	65.3	49	3.63	44	0
2019	76.6	55	87.3	81	65.9	39	1.73	99	0
2018	75.5	82	84.8	104	66.2	35	4.20	35	0
2017	72.6	111	83.3	114	61.9	103	3.21	57	0
2016	77.5	42	85.9	92	69.1	6	6.49	18	0
2015	73.9	103	84.3	107	63.4	79	2.67	71	0
2014	76.7	50	86.6	88	66.8	28	3.56	49	0
2013	74.4	97	84.8	104	64.1	64	2.94	64	0
2012	75.9	78	89.6	45	62.2	98	6.24	19	0
2011	78.3	27	89.3	50	67.4	16	2.54	76	0
2010	80.1	11	92.9	15	67.2	19			0
2009	74	101	84.3	107	63.7	70	3.44	52	0
2008	74.1	100	85.1	100	63.2	82	2.75	70	0
2007	82.1	4	95.3	5	68.9	7	1.56	102	0
2006	76.9	48	87.9	72	65.9	39	2.43	82	0
2005	78.9	23	89.7	44	68.1	11	2.01	95	0
2004	72.7	109	83.9	111	61.6	105	2.60	74	1
2003	77.7	38	89.3	50	66.1	36	1.76	97	0
2002	78.4	26	90.5	34	66.3	33	0.59	116	1
2001	76.6	55	86.9	85	66.3	33	7.99	11	0
2000	76.6	55	86.7	86	66.6	30	5.19	27	0
1999	73.5	107	88	70	59.1	118	1.67	101	2
1998	76.6	55	87.6	77	65.6	44	1.48	103	0
1997	73.7	105	83.7	112	63.7	70	3.85	40	0
1996	76.4	62	88.3	62	64.6	58	1.04	109	1
1995	79.8	14	91.7	22	67.8	13	2.30	83	1
1994	71.9	115	83.3	114	60.4	112	5.29	24	0
1993	76.7	50	87.5	78	65.9	39	2.30	83	0
1992	70.6	118	82.3	117	59	119	3.37	55	0
1991	76.2	70	90.8	30	61.7	104	2.03	94	0
1990	73.7	105	85.4	98	62	102	4.51	33	0
1989	75.3	85	88.3	62	62.3	96	2.08	91	2
1988	79.6	18	92.9	15	66.1	36	2.53	78	2
1987	76.4	62	90.7	31	62.1	99	2.81	68	0
1985	71.6	117	84	109	59.3	115	10.01	4	0
1984	74.5	95	88.2	65	60.7	111	4.73	29	1
1983	79.7	17	94.8	6	64.5	59	2.14	88	1
1982	72.8	108	85.6	97	60.1	114	2.30	83	0
1981	74.2	99	85.9	92	62.5	91	1.74	98	0
1980	80.6	9	94.3	10	67	23	0.85	112	0
1979	74	101	84	109	64.1	64	5.47	21	0
1978	76.4	62	89.2	52	63.5	74	8.09	7	0
1977	76.3	67	87.5	78	65.1	52	5.35	23	0
1976	71.9	115	85.1	100	58.8	120	2.64	72	0
1975	75.4	84	86.1	90	64.7	54	7.70	12	0
1974	74.5	95	85.7	96	63.4	79	6.67	17	0
1973					64.3	62	3.60	45	6
1972	75.3	85	87	82	63.5	74	8.05	8	0
1971	74.8	93	85.8	94	63.8	68	6.85	14	0
1970	77.4	43	87.9	72	66.8	28	3.39	54	0
1969	75.8	80	88.3	62	63.2	82	1.47	104	0
1968	77.9	35	88.9	57	66.9	25	2.50	80	0
1967	72	114	84.8	104	59.2	117	3.23	56	0
1966	74.6	94	86.7	86	62.7	89	3.12	59	1
1965	76.1	72	88.8	58	63.5	74	3.66	43	0
1964	76.7	50	89.9	41	63.5	74	3.02	60	0
1963	76.1	72	88.7	59	63.5	74	1.70	100	0
1962	76.3	67	90.1	37	62.4	94	2.87	65	0
1961	75.1	89	87	82	63.2	82	2.14	88	0
1960	78	32	90.6	32	65.4	48	3.83	41	0
1959	78.6	25	89.8	43	67.3	18	8.02	9	0
1958	76.8	49	87.9	72	65.7	42	4.03	39	0
1957	76.1	72	90.1	37	62.1	99	1.33	107	0
1956	77.2	46	89.2	52	65.3	49	2.96	63	0
1955	78.1	29	91.7	22	64.4	61	0.88	111	2
1954	80.1	11	92.7	17	67.5	14	3.51	50	1
1953	75.9	78	91.7	22	60.2	113	0.70	114	0
1952	76.7	50	90	40	63.3	81	1.04	109	0
1951	76.6	55	89.5	47	63.8	68	2.86	67	0
1950	72.7	109	83.1	116	62.4	94	8.65	6	0
1949	76	76	87.9	72	64.1	64	4.16	37	0
1948	75.6	81	88.2	65	62.7	89	3.51	50	2
1947	82.5	3	94.6	7	70.4	1	3.74	42	0
1946	73.9	103	83.7	112	64	67	8.72	5	0
1945	76	76	87	82	65.1	52	7.20	13	0
1944	77.7	38	88.2	65	67.2	19	5.24	26	0
1943	79.8	14	91.1	28	68.5	8	1.46	105	0
1942	75.2	87	85.2	99	65.3	49	3.60	45	0
1941	80.5	10	92.7	17	68.4	9	2.78	69	0
1940	77.7	38	92.3	21	63	85	2.24	86	0
1939	76.4	62	90.6	32	62.3	96	2.55	75	0
1938	80.9	8	93.4	13	68.3	10	4.55	32	0
1937	81	7	94.5	9	67.4	16	1.28	108	0
1936	84.9	1	99.7	1	70.1	2	0.35	118	0
1935	79.5	20	91.5	26	67.5	14	2.08	91	0
1934	78.7	24	89.5	47	67.9	12	4.30	34	0
1933	76.1	72	89.2	52	63	85	3.02	60	0
1932	78.3	27	91	29	65.6	44	11.18	1	0
1931	76.5	60	88.4	61	64.7	54	5.28	25	0
1930	79.6	18	95.5	4	63.6	73	0.36	117	0
1929	75.1	89	89.2	52	61	109	3.57	48	0
1928	78.1	29	89.2	52	66.9	25	6.69	16	0
1927	72.1	113	84.9	103	59.3	115	2.24	86	0
1926	79.3	21	91.5	26	67.2	19	4.76	28	0
1925	78	32	94.6	7	61.4	108	0.72	113	0
1924	79.3	21	93.2	14	65.5	46	3.13	58	0
1923	77.9	35	90.2	36	65.7	42	6.78	15	0
1922	77.4	43	92.7	17	62.1	99	2.47	81	0
1921	76.2	70	88.1	69	64.3	62	10.73	3	0
1920	74.4	97	87.4	80	61.5	107	3.44	52	0
1919	77.7	38	91.7	22	63.7	70	2.87	65	0
1918	82.8	2	95.7	3	69.8	4	4.71	30	0
1917	75.2	87	85.8	94	64.7	54	4.19	36	0
1916	79.9	13	90.3	35	69.5	5	5.44	22	0
1915	72.2	112	82.3	117	61.6	105	10.96	2	3
1914	79.8	14	92.5	20	67.2	19	1.84	96	1
1913	81.4	6	96.7	2	66	38	1.37	106	0
1912	77.2	46	89.6	45	64.7	54	4.68	31	0
1911	78	32	89.5	47	66.6	30	8.01	10	2
1910	76.4	62	89.9	41	62.8	87	2.11	90	0
1904					60.8	110			4
1903							3.58	47	13
1902	76.3	67	90.1	37	62.5	91	4.07	38	0
1901	78.1	29	93.5	12	62.8	87	2.51	79	3
1900	81.8	5	93.7	11	69.9	3	3.00	62	1

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1936	84.9
1918	82.8
1947	82.5
2007	82.1
1900	81.8
1913	81.4
1937	81
1938	80.9
1980	80.6
1941	80.5

Coldest
Year	Mean, °F
1992	70.6
1985	71.6
1994	71.9
1976	71.9
1967	72
1927	72.1
1915	72.2
2017	72.6
2004	72.7
1950	72.7

Wettest
Year	Precipitation, in
1932	11.18
1915	10.96
1921	10.73
1985	10.01
1946	8.72
1950	8.65
1978	8.09
1972	8.05
1959	8.02
1911	8.01

Driest
Year	Precipitation, in
2025	0.02
1936	0.35
1930	0.36
2002	0.59
2024	0.69
1953	0.70
1925	0.72
1980	0.85
1955	0.88
1996	1.04
More years share the last value

The hottest, coldest and wettest days

Hottest day: 97°F; 31 August 2026
Coldest night: 56°F; 24 August 2026
Wettest day: 0.90 in; 26 August 2026

Every month, season and year

Months

Seasons

Years

Carbondale, IL the day's answers

All-time records

Every answer in words

August 2026 brought 2.54 in of precipitation in Carbondale, IL, the driest August since 2025, tied 43rd driest of 119 (with 2011).
The hottest day of August 2026 in Carbondale, IL: 97°F on Monday 31 August 2026.
The coldest night of August 2026 in Carbondale, IL: a low of 56°F on Monday 24 August 2026.
The wettest day of August 2026 in Carbondale, IL: 0.90 in on Wednesday 26 August 2026.