Oak Ridge, TN: September

30 September 2026: September 2026 averaged 78.5°F in Oak Ridge, TN, the warmest September since 2019 (2025 excluded: 15 of 30 days missing), 2nd warmest of 79.

September 2026

Mean temperature: 78.5°F; Warmest since 2019; 2nd warmest of 79
Precipitation: 1.99 in; Driest since 2023; 18th driest of 80

A normal September in Oak Ridge, TN (1991 to 2020): a mean temperature of 71.7°F, between 69.2°F and 76.3°F in eight years of ten and 3.38 in of precipitation, between 1.36 in and 7.21 in in eight years of ten.

The mean temperature of every September in Oak Ridge, TN since 1947: 78.5°F in 2026; the highest is 78.8°F, in 2019.

Normal range, 69.2 to 76.3°F

Every year, ranked, as a table

Every September in Oak Ridge, TN from 1947 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	78.5	2	90.8	3	66.3	2	1.99	63	0
2025							3.71	37	15
2024	73.3	14	83.6	22	63	11	4.44	25	0
2023	73.2	16	84.7	12	61.6	24	0.55	78	0
2022	70.4	44	81.1	47	59.7	43	3.70	38	0
2021	71.1	38	81.1	47	61.1	28	3.81	34	0
2020	71.6	34	81	50	62.1	18	3.82	33	0
2019	78.8	1	91.4	1	66.3	2	0.13	80	0
2018	77.4	3	86.1	8	68.6	1	7.61	5	0
2017	70.3	47	80.8	52	59.7	43	3.14	47	0
2016	76.3	5	88.9	4	63.7	8	1.97	64	0
2015	72.8	18	83.2	26	62.3	16	2.23	59	0
2014	73.4	13	83.1	27	63.8	7	2.52	57	0
2013	71.8	29	82.2	35	61.3	25	3.38	42	0
2012	70.4	44	81.3	43	59.5	48	7.17	7	0
2011	69.5	54	79.4	62	59.6	46	10.14	1	0
2010	72.5	23	84.2	15	60.7	32	5.10	16	0
2009	71.7	31	79.2	66	64.3	5	5.48	13	0
2008	73.2	16	84.1	16	62.3	16	1.27	74	0
2007	74.4	6	86.7	7	62.1	18	2.47	58	0
2006	67.5	69	77.1	74	57.8	58	4.77	19	0
2005	73.9	8	86.9	6	61	30	1.86	66	0
2004	71.2	37	81.1	47	61.3	25	7.61	5	0
2003	69.4	57	79.3	64	59.4	49	4.68	21	0
2002	74.1	7	84	17	64.1	6	7.06	8	0
2001	67.9	67	78.3	69	57.4	61	4.79	18	0
2000	70.4	44	80.8	52	60.1	38	2.84	55	0
1999	70.2	49	84	17	56.3	65	1.27	74	0
1998	76.6	4	91.1	2	62	20	1.37	73	0
1997	72	26	84.3	13	59.7	43	3.38	42	0
1996	69.3	60	79.9	58	58.7	53	3.70	38	0
1995	70.8	42	82.9	28	58.8	51	3.90	31	0
1994	67.2	70	79.2	66	55.2	72	2.14	61	0
1993	71.7	31	83.4	23	60	40	5.12	15	0
1992	70.9	40	80.6	55	61.2	27	3.11	50	0
1991	71.4	36	82.6	32	60.2	37	2.86	54	0
1990	71.8	29	83.8	21	59.8	42	1.44	70	0
1989	70.6	43	79.5	60	61.7	23	8.86	3	1
1988	70.9	40	81	50	60.8	31	5.63	12	0
1987	69.6	52	81.4	42	57.9	56	5.64	11	0
1986	72.1	25	81.8	38	62.4	15	4.70	20	0
1985	66.9	71	80	56	53.9	75	1.56	68	0
1984	66.4	74	79.4	62	53.5	77	1.87	65	0
1983	69.4	57	81.8	38	56.9	64	2.07	62	0
1982	66.8	72	77.3	73	56.2	68	5.31	14	0
1981	66.8	72	79.9	58	53.6	76	3.90	31	0
1980	73.7	11	85.4	10	62	20	3.31	45	0
1979	69.6	52	79.3	64	60	40	3.74	35	0
1978	72.7	20	84.8	11	60.7	32	1.70	67	0
1977	70.3	47	79.5	60	61.1	28	8.67	4	0
1976	65	77	75.4	77	54.6	74	4.56	24	0
1975	66	75	76.5	76	55.5	71	5.79	10	0
1974	65.6	76	74.8	79	56.3	65	4.18	28	0
1973	72.8	18	82.9	28	62.7	12	3.41	41	0
1972	72	26	82.3	34	61.8	22	4.28	26	0
1971	72.6	22	82	37	63.1	10	3.32	44	0
1970	73.9	8	84.3	13	63.4	9	2.54	56	0
1969	68.5	62	79.1	68	57.9	56	4.08	29	0
1968	68.1	66	80	56	56.2	68	3.47	40	0
1967	64.9	78	76.6	75	53.1	78	3.27	46	0
1966	68.5	62	77.8	72	59.2	50	4.20	27	0
1965	71.1	38	81.8	38	60.3	35	3.01	51	0
1964	68.8	61	81.2	44	56.3	65	3.14	47	0
1963	69.4	57	81.2	44	57.5	59	1.43	71	0
1962	68.2	65	78.1	70	58.4	54	6.42	9	0
1961	72.2	24	84	17	60.3	35	0.41	79	0
1960	71.9	28	81.2	44	62.5	14	4.64	22	0
1959	72.7	20	82.7	30	62.6	13	0.56	77	0
1958	69.5	54	81.5	41	57.5	59	3.00	52	0
1957	73.6	12	82.7	30	64.5	4	9.10	2	0
1956	69.5	54	80.8	52	58.2	55	2.91	53	0
1955	73.3	14	86.1	8	60.5	34	4.60	23	0
1954	73.8	10	88.7	5	58.8	51	3.73	36	0
1953	70.1	50	84	17	56.2	68	4.03	30	0
1952	68.5	62	82.1	36	54.8	73	1.46	69	0
1951	69.9	51	82.4	33	57.4	61	4.95	17	0
1950	67.7	68	78	71	57.3	63	3.12	49	0
1949	64.1	79	75.3	78	52.9	79	1.39	72	0
1948	71.7	31	83.3	24	60.1	38	1.14	76	0
1947	71.5	35	83.3	24	59.6	46	2.20	60	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2019	78.8
2026	78.5
2018	77.4
1998	76.6
2016	76.3
2007	74.4
2002	74.1
2005	73.9
1970	73.9
1954	73.8

Coldest
Year	Mean, °F
1949	64.1
1967	64.9
1976	65
1974	65.6
1975	66
1984	66.4
1982	66.8
1981	66.8
1985	66.9
1994	67.2

Wettest
Year	Precipitation, in
2011	10.14
1957	9.10
1989	8.86
1977	8.67
2018	7.61
2004	7.61
2012	7.17
2002	7.06
1962	6.42
1975	5.79

Driest
Year	Precipitation, in
2019	0.13
1961	0.41
2023	0.55
1959	0.56
1948	1.14
2008	1.27
1999	1.27
1998	1.37
1949	1.39
1963	1.43

The hottest, coldest and wettest days

Hottest day: 100°F; 4 September 2026, 3 September 2026
Coldest night: 49°F; 28 September 2026, 27 September 2026
Wettest day: 1.26 in; 23 September 2026

Every month, season and year

Months

Seasons

Years

Oak Ridge, TN the day's answers

All-time records

Every answer in words

September 2026 brought 1.99 in of precipitation in Oak Ridge, TN, the driest September since 2023, 18th driest of 80.
The hottest day of September 2026 in Oak Ridge, TN: 100°F on Friday 4 September 2026 and Thursday 3 September 2026.
The coldest night of September 2026 in Oak Ridge, TN: a low of 49°F on Monday 28 September 2026 and Sunday 27 September 2026.
The wettest day of September 2026 in Oak Ridge, TN: 1.26 in on Wednesday 23 September 2026.