Quincy, IL: Summer

31 August 2026: Summer 2026 averaged 75.3°F in Quincy, IL, the warmest summer since 2024, tied 62nd warmest of 126 (with 1995, 1991 and 1946).

Summer 2026

Mean temperature: 75.3°F; Warmest since 2024; 62nd warmest of 126
Precipitation: 16.96 in; Wettest since 2015; 17th wettest of 126

A normal summer in Quincy, IL (1991 to 2020): a mean temperature of 74.5°F, between 72.4°F and 76.8°F in eight years of ten and 11.38 in of precipitation, between 6.79 in and 18.60 in in eight years of ten.

The mean temperature of every summer in Quincy, IL since 1901: 75.3°F in 2026; the highest is 84.2°F, in 1934.

Normal range, 72.4 to 76.8°F

Every year, ranked, as a table

Every summer in Quincy, IL from 1901 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	75.3	62	84.3	86	66.4	25	16.96	17	0
2025	75.1	66	84.2	87	66	33	11.24	67	0
2024	75.9	46	85.9	54	66	33	9.40	88	0
2023	75.1	66	85.9	54	64.3	78	8.05	98	0
2022	75.8	49	85.5	65	66	33	10.66	73	0
2021	75.7	51	85.1	69	66.3	28	13.03	48	0
2020	75.4	56	85.2	68	65.6	45	13.03	48	0
2019	74.9	69	84.1	90	65.7	42	11.50	61	0
2018	76.8	34	87.1	37	66.4	25	10.40	74	0
2017	74.4	78	85.1	69	63.6	91	9.37	89	0
2016	76.3	39	85.9	54	66.8	19	15.01	30	0
2015	73.9	91	83	104	64.8	62	20.12	4	0
2014	73.2	108	82	114	64.4	77	17.21	15	0
2013	74.3	81	84.6	79	64	84	2.91	125	0
2012	78	17	90.6	9	65.3	53	8.11	97	0
2011	77.4	24	87.3	36	67.5	15	13.08	47	0
2010	77.1	28	86.3	48	68	11	20.18	3	0
2009	71.9	118	81.1	121	62.7	108	15.21	27	0
2008	73.6	96	83.3	101	64	84	18.56	10	0
2007	75.7	51	86.3	48	65.2	55	7.18	114	0
2006	75.5	53	85.8	60	65.3	53	9.67	83	0
2005	76.5	37	87.6	32	65.4	50	7.35	111	0
2004	70.5	124	80.1	125	61	120	15.36	22	0
2003	73.3	102	83.4	98	63.2	99	13.14	46	0
2002	76.1	43	85.9	54	66.3	28	14.40	36	0
2001	74.4	78	84.2	87	64.6	69	9.28	93	0
2000	73.3	102	82.1	111	64.5	73	15.05	29	0
1999	74.9	69	84.9	72	64.8	62	6.80	116	0
1998	74.5	77	83.4	98	65.5	47	11.25	66	0
1997	73.2	108	82.7	106	63.6	91	6.73	117	0
1996	72.4	113	81.6	118	63.1	101	8.83	94	0
1995	75.3	62	84.6	79	66	33	14.15	39	0
1994	73.4	100	83.3	101	63.5	95	9.47	85	0
1993	74.1	86	82.6	109	65.6	45	18.95	8	0
1992	70.5	124	80.4	124	60.6	124	8.03	100	0
1991	75.3	62	85.1	69	65.4	50	5.98	120	0
1990	74	88	83.6	96	64.5	73	12.53	51	0
1989	74	88	84.7	77	63.3	97	7.58	108	0
1988	77	29	89.6	15	64.5	73	5.79	121	0
1987	76.2	40	86.3	48	66	33	12.20	56	0
1986	73.7	93	83.6	96	63.7	90	14.32	37	0
1985	71.8	119	81.3	120	62.3	115	13.26	44	0
1984	75.9	46	86.8	44	65	59	9.34	92	0
1983	78.5	14	89.7	14	67.3	17	3.72	124	0
1982	70.9	121	79.2	126	62.6	110	15.33	23	0
1981	73.3	102	82.1	111	64.6	69	20.06	5	0
1980	78.8	11	89.4	18	68.1	9	10.21	79	0
1979	74.8	75	84.8	75	64.8	62	7.36	110	0
1978	74.9	69	84.6	79	65.2	55	10.30	77	0
1977	75.4	56	85.8	60	65	59	14.93	32	0
1976	74.4	78	85.7	63	63.1	101	7.18	114	0
1975	75.4	56	85.3	67	65.5	47	9.46	86	0
1974	72.6	112	82.7	106	62.4	114	11.90	58	0
1973	74.9	69	84.1	90	65.7	42	17.34	14	0
1972	73.7	93	84.1	90	63.3	97	10.35	75	0
1971	73.4	100	84.1	90	62.8	107	8.22	96	0
1970	73.6	96	82.7	106	64.6	69	19.88	7	0
1969	73.6	96	82.6	109	64.7	66	16.36	19	0
1968	74.3	81	83.8	95	64.8	62	17.01	16	0
1967	70.7	123	80.6	123	60.9	122	16.58	18	0
1966	73.6	96	84.2	87	62.9	105	7.63	107	0
1965	72	117	82.1	111	61.9	118	18.69	9	0
1964	74.2	84	84.9	72	63.6	91	11.20	68	0
1963	75.5	53	86.4	46	64.7	66	8.65	95	0
1962	74.3	81	84.7	77	63.9	87	8.03	100	0
1961	73.3	102	83.4	98	63.2	99	16.35	20	0
1960	73.3	102	82.9	105	63.6	91	15.00	31	0
1959	76.4	38	86.9	41	65.9	38	6.62	118	0
1958	72.3	114	81.9	117	62.7	108	19.91	6	0
1957	75.8	49	85.9	54	65.7	42	11.44	63	0
1956	75.4	56	85.9	54	64.9	61	14.61	34	0
1955	76	45	87.5	34	64.5	73	10.76	72	0
1954	77.3	26	88.4	26	66.3	28	12.46	52	0
1953	76.9	32	89.6	15	64.1	81	5.42	122	0
1952	75.5	53	87.1	37	63.9	87	9.46	86	0
1951	71.8	119	82	114	61.6	119	14.16	38	0
1950	69.8	126	81	122	58.6	126	14.57	35	0
1949	75.4	56	86.4	46	64.3	78	12.76	50	0
1948	73.8	92	84.5	83	63.1	101	12.37	54	0
1947	77.9	19	89.3	19	66.5	24	13.17	45	0
1946	75.3	62	86	53	64.7	66	11.90	58	0
1945	74.2	84	85.5	65	63	104	10.35	75	0
1944	77.4	24	88.4	26	66.4	25	8.04	99	0
1943	77.8	20	88.2	29	67.4	16	14.01	41	0
1942	75.1	66	86.1	52	64.1	81	15.59	21	0
1941	76.9	32	89.2	20	64.6	69	11.43	64	0
1940	76.2	40	88.3	28	64.1	81	10.20	80	0
1939	75.4	56	87	40	63.8	89	18.01	12	0
1938	77.3	26	88.5	25	66.1	32	13.65	42	0
1937	78.7	13	89.1	21	68.3	8	11.48	62	0
1936	83.8	2	97.1	1	70.5	2	2.68	126	0
1935	77.5	23	86.9	41	68	11	13.40	43	0
1934	84.2	1	96.9	2	71.6	1	4.70	123	0
1933	79.3	8	90.1	12	68.5	7	7.81	105	0
1932	78	17	87.8	31	68.1	9	21.34	2	0
1931	79.5	6	90.1	12	68.9	4	15.22	26	0
1930	79.5	6	91.1	7	67.9	13	6.54	119	0
1929	77	29	87.6	32	66.3	28	15.14	28	2
1928	76.1	43	86.3	48	65.9	38	11.06	69	1
1927	74	88	84.4	84	63.5	95	9.85	81	0
1926	76.6	36	87.5	34	65.8	41	15.32	24	0
1925	77.8	20	88.9	22	66.7	22	15.26	25	0
1924	75.9	46	86.6	45	65.2	55	12.29	55	0
1923	78.4	16	89.6	15	67.2	18	9.37	89	0
1922	78.5	14	90.4	11	66.6	23	7.28	112	0
1921	80.6	3	91.7	5	69.5	3	9.50	84	0
1920	76.8	34	88.2	29	65.4	50	11.34	65	0
1919	79.2	9	90.5	10	67.9	13	10.95	71	0
1918	78.8	11	90.8	8	66.8	19	7.64	106	0
1917	74.6	76	84.9	72	64.3	78	12.46	52	0
1916	77.8	20	88.9	22	66.8	19	10.27	78	2
1915	72.2	115	82	114	62.5	112	21.85	1	0
1914	80.1	5	91.4	6	68.7	5	7.54	109	1
1913	80.3	4	91.9	4	68.7	5	8.00	102	0
1912	76.2	40	87.1	37	65.5	47	7.19	113	1
1911	77	29	88.9	22	65.1	58	7.92	103	0
1910	74.1	86	85.7	63	62.5	112	7.82	104	1
1909	74.9	69	85.8	60	64	84	9.81	82	1
1908	73.7	93	84.8	75	62.6	110	14.04	40	0
1907	72.7	111	84.4	84	61	120	17.80	13	6
1906	73.3	102	84.6	79	62	117	11.96	57	0
1905	74.9	69	86.9	41	62.9	105	11.59	60	1
1904	70.9	121	81.6	118	60.3	125	14.79	33	0
1903	72.1	116	83.3	101	60.8	123	10.97	70	0
1902	73.1	110	84	94	62.1	116	18.30	11	1
1901	79	10	92.1	3	65.9	38	9.36	91	1

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1934	84.2
1936	83.8
1921	80.6
1913	80.3
1914	80.1
1931	79.5
1930	79.5
1933	79.3
1919	79.2
1901	79

Coldest
Year	Mean, °F
1950	69.8
2004	70.5
1992	70.5
1967	70.7
1982	70.9
1904	70.9
1985	71.8
1951	71.8
2009	71.9
1965	72

Wettest
Year	Precipitation, in
1915	21.85
1932	21.34
2010	20.18
2015	20.12
1981	20.06
1958	19.91
1970	19.88
1993	18.95
1965	18.69
2008	18.56

Driest
Year	Precipitation, in
1936	2.68
2013	2.91
1983	3.72
1934	4.70
1953	5.42
1988	5.79
1991	5.98
1930	6.54
1959	6.62
1997	6.73

The hottest, coldest and wettest days

Hottest day: 98°F; 26 July 2026
Coldest night: 52°F; 15 June 2026
Wettest day: 2.78 in; 10 June 2026

Every month, season and year

Months

Seasons

Years

Quincy, IL the day's answers

All-time records

Every answer in words

Summer 2026 brought 16.96 in of precipitation in Quincy, IL, the wettest summer since 2015, 17th wettest of 126.
The hottest day of summer 2026 in Quincy, IL: 98°F on Sunday 26 July 2026.
The coldest night of summer 2026 in Quincy, IL: a low of 52°F on Monday 15 June 2026.
The wettest day of summer 2026 in Quincy, IL: 2.78 in on Wednesday 10 June 2026.