Springfield, IL: September

30 September 2026: September 2026 averaged 74.3°F in Springfield, IL, the warmest September since 1939, tied 3rd warmest of 148 (with 1939).

September 2026

Mean temperature: 74.3°F; Warmest since 1939; 3rd warmest of 148
Precipitation: 1.71 in; Driest since 2025; 47th driest of 148

A normal September in Springfield, IL (1991 to 2020): a mean temperature of 66.8°F, between 64.3°F and 72.2°F in eight years of ten and 2.30 in of precipitation, between 0.90 in and 6.15 in in eight years of ten.

The mean temperature of every September in Springfield, IL since 1879: 74.3°F in 2026; the highest is 75.3°F, in 1933.

Normal range, 64.3 to 72.2°F

Every year, ranked, as a table

Every September in Springfield, IL from 1879 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	74.3	3	84.8	7	63.9	3	1.71	102	0
2025	69.2	44	84.2	11	54.2	114	0.56	142	0
2024	68.6	62	81.5	35	55.6	91	1.66	105	0
2023	69.1	49	81.4	38	56.7	72	1.98	94	0
2022	67	91	78.3	83	55.7	89	3.70	50	0
2021	69.9	36	82.4	24	57.4	62	3.84	46	0
2020	66.5	99	78.3	83	54.7	107	2.45	81	0
2019	73.2	6	83.9	14	62.5	9	7.06	10	0
2018	72.1	13	83.5	17	60.7	18	3.21	62	0
2017	70.5	29	84.3	10	56.7	72	0.01	147	0
2016	72.9	9	83.9	14	61.9	11	1.85	99	0
2015	72.7	11	85	6	60.5	19	4.29	40	0
2014	66.1	106	77.8	93	54.3	112	5.18	26	0
2013	68.8	55	81.4	38	56.2	80	1.25	120	0
2012	65.9	109	78.9	72	52.9	127	2.89	69	0
2011	64.4	127	76.5	113	52.3	136	1.70	103	0
2010	68.5	65	80.2	55	56.8	70	7.94	6	0
2009	66.5	99	77.6	94	55.4	95	2.18	88	0
2008	66.8	93	77.1	100	56.5	77	8.53	4	0
2007	71.1	22	85.1	5	57.1	66	1.60	109	0
2006	64.5	125	76.3	116	52.7	131	2.02	92	0
2005	71.3	21	84	12	58.6	42	3.96	43	0
2004	68.2	69	82.4	24	53.9	116	0.24	145	0
2003	62.9	140	75.4	122	50.3	146	1.58	110	0
2002	68.9	52	81.5	35	56.3	78	1.22	122	0
2001	64.3	129	77.1	100	51.6	141	2.50	79	0
2000	67.1	88	80.2	55	53.9	116	2.92	68	0
1999	64.5	125	79.1	68	49.9	147	2.42	83	0
1998	71.1	22	82.8	20	59.4	34	1.27	119	0
1997	66.7	96	79.1	68	54.2	114	3.53	52	0
1996	64.2	130	76.8	110	51.6	141	1.12	127	0
1995	64.6	124	76.8	110	52.5	133	0.65	139	0
1994	66.7	96	78.6	80	54.8	104	0.93	132	0
1993	62.4	144	72	146	52.7	131	6.05	19	0
1992	67	91	79.2	67	54.8	104	1.54	112	0
1991	66.8	93	78.1	90	55.5	93	4.35	38	0
1990	68.4	67	79	70	57.7	58	1.91	98	0
1989	63.8	133	74.2	134	53.3	125	5.49	22	0
1988	68.7	58	81.4	38	56	83	2.84	71	0
1987	67.6	77	80.5	52	54.7	107	0.99	130	0
1986	70.4	31	80.9	45	59.9	27	8.57	3	0
1985	67.9	72	78.2	87	57.5	61	0.64	140	0
1984	65.6	111	76.9	108	54.4	111	4.80	31	0
1983	69.1	49	81.9	31	56.3	78	1.36	116	0
1982	66.1	106	76.9	108	55.3	98	2.75	75	0
1981	67.2	86	78.9	72	55.4	95	1.13	125	0
1980	68.7	58	80.2	55	57.1	66	4.95	30	0
1979	67.7	74	81.5	35	53.9	116	trace	148	0
1978	70.9	25	83.6	16	58.2	48	1.58	110	0
1977	68.6	62	78.6	80	58.5	44	5.94	20	0
1976	65.2	117	79	70	51.4	143	2.20	87	0
1975	63.7	135	74.2	134	53.3	125	2.84	71	0
1974	61.9	146	73.2	138	50.5	145	2.17	89	0
1973	69.8	38	79.5	62	60	26	3.28	60	0
1972	68.7	58	78.3	83	59.1	37	3.95	45	0
1971	71.1	22	81.9	31	60.4	21	3.76	49	0
1970	69.2	44	80.7	49	57.6	59	7.73	7	0
1969	66.4	102	77.5	95	55.3	98	3.97	42	0
1968	66.7	96	78.5	82	54.8	104	3.29	59	0
1967	63.6	136	75.2	123	52.1	139	4.03	41	0
1966	64	131	74.4	132	53.6	122	4.72	33	0
1965	68.5	65	78.7	76	58.4	47	6.43	15	0
1964	68.9	52	81.3	41	56.6	76	1.24	121	0
1963	66.8	93	79.9	58	53.8	119	0.74	138	0
1962	65.1	121	77.3	99	52.9	127	1.42	113	0
1961	69.4	42	80.9	45	57.9	56	6.35	17	0
1960	72.7	11	84.6	9	60.8	16	1.64	107	0
1959	69	51	79.4	63	58.5	44	6.47	14	0
1958	67.2	86	78.2	87	56.1	81	1.73	101	0
1957	65.2	117	76.6	112	53.8	119	1.31	118	0
1956	67.1	88	80.4	53	53.8	119	0.81	137	0
1955	69.7	39	82.4	24	56.9	68	2.60	78	0
1954	71.6	19	84.7	8	58.5	44	0.91	134	0
1953	68.3	68	82	29	54.5	109	1.92	97	0
1952	67.4	83	82.2	27	52.5	133	0.62	141	0
1951	63.4	137	73.2	138	53.6	122	2.76	74	0
1950	65.6	111	75.5	121	55.7	89	1.35	117	0
1949	61	147	72.8	142	49.1	148	2.21	86	0
1948	69.3	43	80.6	51	58	53	0.90	135	0
1947	70.3	32	81.1	43	59.5	31	5.03	29	0
1946	68.6	62	79.9	58	57.3	63	3.06	66	0
1945	68	71	76.5	113	59.4	34	8.38	5	0
1944	69.2	44	78.8	74	59.5	31	3.84	46	0
1943	65.2	117	76.1	117	54.3	112	2.45	81	0
1942	67.5	78	77	104	58.1	51	4.45	36	0
1941	71.4	20	82	29	60.8	16	6.97	11	0
1940	68.8	55	80.8	47	56.7	72	0.38	143	0
1939	74.3	3	86.9	1	61.7	13	0.14	146	0
1938	71.9	15	82.6	22	61.2	14	1.98	94	0
1937	67.5	78	79.3	64	55.8	86	2.16	90	0
1936	72.8	10	82.2	27	63.3	6	6.06	18	0
1935	68.8	55	79.3	64	58.2	48	3.22	61	0
1934	65.3	115	74.5	129	56	83	5.24	25	0
1933	75.3	1	86.2	2	64.4	1	5.05	28	0
1932	67.5	78	78.3	83	56.7	72	1.13	125	0
1931	74.9	2	85.9	4	63.8	4	3.15	63	0
1930	69.9	36	79.9	58	59.9	27	2.71	77	0
1929	65.5	113	75.1	125	55.8	86	1.65	106	0
1928	64	131	74.5	129	53.4	124	3.35	55	0
1927	71.7	18	81	44	62.3	10	7.46	8	0
1926	67.8	73	75.2	123	60.3	23	15.16	1	0
1925	74.2	5	84	12	64.4	1	4.45	36	0
1924	62.2	145	72	146	52.4	135	2.02	92	0
1923	66.4	102	74.5	129	58.2	48	5.66	21	0
1922	70.9	25	82.7	21	59.1	37	1.00	129	0
1921	72.1	13	81.3	41	62.8	8	4.33	39	0
1920	69.5	41	79.3	64	59.7	29	3.08	65	0
1919	70.5	29	81.6	34	59.4	34	2.74	76	0
1918	60.4	148	70.1	148	50.6	144	4.71	34	0
1917	65.3	115	76	119	54.5	109	1.61	108	0
1916	65.7	110	76.1	117	55.3	98	3.35	55	0
1915	69.2	44	78.7	76	59.6	30	3.31	58	0
1914	67.7	74	77.5	95	57.9	56	1.82	100	0
1913	67.7	74	77.9	91	57.6	59	3.41	54	0
1912	68.9	52	78.7	76	59.1	37	1.42	113	1
1911	70.1	34	78.2	87	61.9	11	10.68	2	0
1910	67.5	78	77	104	58.1	51	5.34	24	0
1909	65.2	117	75.1	125	55.3	98	3.67	51	0
1908	70.2	33	81.8	33	58.6	42	1.22	122	0
1907	67.3	85	77.4	97	57.2	65	0.92	133	0
1906	71.9	15	82.9	19	60.9	15	3.77	48	0
1905	68.7	58	77.9	91	59.5	31	2.40	84	0
1904	67.1	88	77	104	57.3	63	3.96	43	0
1903	66.4	102	77.1	100	55.6	91	2.48	80	0
1902	62.5	143	72.1	145	52.9	127	2.30	85	0
1901	67.4	83	78.7	76	56.1	81	1.95	96	0
1900	69.6	40	78.8	74	60.3	23	5.15	27	0
1899	65.4	114	75.6	120	55.2	103	3.33	57	0
1898	70	35	79.6	61	60.5	19	6.82	13	0
1897	73.1	7	86.2	2	60.1	25	0.35	144	0
1896	63.8	133	72.2	144	55.3	98	5.42	23	0
1895	70.6	28	80.8	47	60.4	21	2.80	73	0
1894	67.5	78	77	104	58	53	2.94	67	0
1893	69.2	44	80.4	53	58	53	2.15	91	0
1892	66.5	99	77.1	100	55.8	86	3.48	53	0
1891	70.9	25	83	18	58.7	41	1.38	115	0
1890	62.7	141	73.2	138	52.2	137	0.96	131	0
1889	64.4	127	73.4	137	55.4	95	4.74	32	0
1888	63	139	74.3	133	51.7	140	1.70	103	0
1887	66.2	105	76.4	115	56	83	2.89	69	0
1886	68.1	70	77.4	97	58.8	40	7.24	9	0
1885	65	122	73.1	141	56.8	70	4.47	35	0
1884	71.8	17	80.7	49	62.9	7	6.86	12	0
1883	63.4	137	74.6	128	52.2	137	1.06	128	0
1882	66	108	75.1	125	56.9	68	1.21	124	0
1881	73.1	7	82.5	23	63.6	5	6.43	15	0
1880	64.8	123	74	136	55.5	93	3.15	63	0
1879	62.7	141	72.5	143	52.8	130	0.84	136	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1933	75.3
1931	74.9
2026	74.3
1939	74.3
1925	74.2
2019	73.2
1897	73.1
1881	73.1
2016	72.9
1936	72.8

Coldest
Year	Mean, °F
1918	60.4
1949	61
1974	61.9
1924	62.2
1993	62.4
1902	62.5
1890	62.7
1879	62.7
2003	62.9
1888	63

Wettest
Year	Precipitation, in
1926	15.16
1911	10.68
1986	8.57
2008	8.53
1945	8.38
2010	7.94
1970	7.73
1927	7.46
1886	7.24
2019	7.06

Driest
Year	Precipitation, in
1979	trace
2017	0.01
1939	0.14
2004	0.24
1897	0.35
1940	0.38
2025	0.56
1952	0.62
1985	0.64
1995	0.65

The hottest, coldest and wettest days

Hottest day: 100°F; 2 September 2026
Coldest night: 45°F; 29 September 2026, 28 September 2026
Wettest day: 0.88 in; 16 September 2026

Every month, season and year

Months

Seasons

Years

Springfield, IL the day's answers

All-time records

Every answer in words

September 2026 brought 1.71 in of precipitation in Springfield, IL, the driest September since 2025, 47th driest of 148.
The hottest day of September 2026 in Springfield, IL: 100°F on Wednesday 2 September 2026.
The coldest night of September 2026 in Springfield, IL: a low of 45°F on Tuesday 29 September 2026 and Monday 28 September 2026.
The wettest day of September 2026 in Springfield, IL: 0.88 in on Wednesday 16 September 2026.