Georgetown, DE: September

30 September 2026: September 2026 averaged 71.3°F in Georgetown, DE, the warmest September since 2019, tied 9th warmest of 79 (with 1970 and 1957).

September 2026

Mean temperature: 71.3°F; Warmest since 2019; 9th warmest of 79
Precipitation: 5.28 in; Wettest since 2023; 19th wettest of 79

A normal September in Georgetown, DE (1991 to 2020): a mean temperature of 70.1°F, between 66.4°F and 72.3°F in eight years of ten and 3.90 in of precipitation, between 1.26 in and 7.87 in in eight years of ten.

The mean temperature of every September in Georgetown, DE since 1947: 71.3°F in 2026; the highest is 75.1°F, in 2018.

Normal range, 66.4 to 72.3°F

Every year, ranked, as a table

Every September in Georgetown, DE from 1945 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	71.3	9	78.7	48	63.9	4	5.28	19	0
2025	69.9	29	78.7	48	61	16	3.07	48	0
2024	69.8	30	78.4	55	61.2	15	0.29	79	0
2023	70.6	19	79.4	38	61.7	10	7.41	6	0
2022	70.5	21	80.9	20	60	25	3.93	29	0
2021	71.1	12	81.3	14	61	16	3.11	47	0
2020	70.2	23	78.8	47	61.5	13	3.86	36	0
2019	72.1	6	82.9	5	61.4	14	1.31	72	0
2018	75.1	1	82	8	68.2	1	6.40	9	0
2017	70.7	18	79.5	35	62	7	2.19	58	0
2016	72.3	5	80.3	24	64.2	2	12.29	1	0
2015	72.4	3	82	8	62.7	6	3.16	46	0
2014	70	27	79.3	39	60.7	22	3.90	32	0
2013	67.6	50	78.5	53	56.8	52	0.69	76	0
2012	69.5	34	79.6	32	59.3	28	2.78	54	0
2011	72.1	6	80.1	26	64	3	3.23	45	0
2010	72	8	83.1	4	61	16	4.08	28	0
2009	70.2	23	78.5	53	61.9	8	5.55	17	0
2008	70.9	13	80	29	61.8	9	5.70	15	0
2007	70.1	25	81.7	11	58.4	40	1.13	74	0
2006	66.2	66	75.3	79	57.1	49	7.09	7	0
2005	72.4	3	84.8	1	60	25	0.36	78	0
2004	70.8	16	79.8	31	61.7	10	2.09	59	0
2003	69.5	34	78	58	60.9	21	6.03	11	0
2002	70.5	21	80	29	61	16	8.22	4	0
2001	66	69	76.3	74	55.7	58	1.68	66	0
2000	66.4	63	75.8	77	57	51	6.04	10	0
1999	68.9	39	77.1	68	60.6	23	9.64	2	0
1998	70.9	13	81.5	12	60.4	24	3.90	32	0
1996	68.2	47	78.4	55	57.9	43	7.72	5	0
1995	68.4	43	79.6	32	57.1	49	3.01	50	0
1994	65.9	71	77.6	64	54.1	68	3.76	39	0
1993	69.7	33	80.1	26	59.2	29	3.93	29	0
1992	68.4	43	77.9	61	58.8	36			0
1991	66.9	60	79.3	39	54.5	65	4.28	27	0
1990	65.5	76	76.9	71	54.1	68	1.43	68	0
1989	68.9	39	78.6	52	59.1	30	4.76	24	0
1988	65.9	71	77.3	67	54.4	66	2.09	59	0
1987	69.8	30	80.6	22	58.9	32	3.85	37	0
1986	67.2	55	77.9	61	56.5	54	1.69	65	0
1985	68.4	43	79.5	35	57.2	48	5.97	13	0
1984	66	69	78.7	48	53.3	76	1.36	70	0
1983	67.6	50	79.6	32	55.6	59	5.24	20	0
1982	66.4	63	78.7	48	54.1	68	2.04	61	0
1981	66.4	63	77.6	64	55.2	60	3.40	42	0
1980	70.9	13	82.7	6	59.1	30	3.25	44	0
1979	67.9	48	78	58	57.7	45	4.90	22	0
1978	67.2	55	79.5	35	54.8	62	0.60	77	0
1977	70.8	16	80.6	22	61	16	6.01	12	0
1976	65.7	74	78	58	53.5	75	1.84	63	0
1975	66.7	62	76	75	57.3	47	8.62	3	0
1974	67.6	50	77.7	63	57.6	46	3.88	35	0
1973	69.8	30	81.1	16	58.4	40	2.49	56	0
1972	67.4	53	76.8	72	57.9	43	3.81	38	0
1971	69.5	34	79.3	39	59.6	27	2.94	51	0
1970	71.3	9	83.9	2	58.6	39	1.13	74	0
1969	66.9	60	79.1	44	54.7	63	1.36	70	0
1968	67	58	80.7	21	53.3	76	1.65	67	0
1967	65	78	77.4	66	52.6	79	3.90	32	0
1966	65.8	73	77	69	54.9	61	4.79	23	1
1965	70	27	81.2	15	58.9	32	2.34	57	0
1964	68.4	43	80.1	26	56.7	53	5.39	18	0
1963	64.8	79	75.8	77	53.7	72	4.95	21	0
1962	65.7	74	77	69	54.4	66	2.87	52	0
1961	73.1	2	83.4	3	62.8	5	3.65	40	0
1960	68.8	41	78.9	46	58.7	37	7.05	8	0
1959	70.6	19	82.3	7	58.9	32	1.37	69	0
1958	67	58	80.2	25	53.9	71	1.70	64	2
1957	71.3	9	81.1	16	61.6	12	4.66	25	0
1956	67.2	55	78.1	57	56.4	56	3.91	31	0
1955	68.5	42	79.1	44	58	42	2.81	53	0
1954	70.1	25	81.4	13	58.9	32	5.59	16	0
1953	69.1	37	82	8	56.2	57	2.58	55	0
1952	67.4	53	81.1	16	53.6	74	1.26	73	0
1951	67.8	49	81	19	54.7	63	3.61	41	0
1950	66.2	66	75.9	76	56.5	54	5.91	14	0
1949	65.2	77	76.7	73	53.7	72	3.32	43	1
1948	66.2	66	79.2	43	53.1	78	1.96	62	0
1947	69	38	79.3	39	58.7	37	4.60	26	0
1946							3.04	49	13
1945									10

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2018	75.1
1961	73.1
2015	72.4
2005	72.4
2016	72.3
2019	72.1
2011	72.1
2010	72
2026	71.3
1970	71.3
More years share the last value

Coldest
Year	Mean, °F
1963	64.8
1967	65
1949	65.2
1990	65.5
1976	65.7
1962	65.7
1966	65.8
1994	65.9
1988	65.9
2001	66
More years share the last value

Wettest
Year	Precipitation, in
2016	12.29
1999	9.64
1975	8.62
2002	8.22
1996	7.72
2023	7.41
2006	7.09
1960	7.05
2018	6.40
2000	6.04

Driest
Year	Precipitation, in
2024	0.29
2005	0.36
1978	0.60
2013	0.69
2007	1.13
1970	1.13
1952	1.26
2019	1.31
1984	1.36
1969	1.36

The hottest, coldest and wettest days

Hottest day: 91°F; 1 September 2026
Coldest night: 55°F; 26 September 2026, 16 September 2026
Wettest day: 1.11 in; 26 September 2026

Every month, season and year

Months

Seasons

Years

Georgetown, DE the day's answers

All-time records

Every answer in words

September 2026 brought 5.28 in of precipitation in Georgetown, DE, the wettest September since 2023, 19th wettest of 79.
The hottest day of September 2026 in Georgetown, DE: 91°F on Tuesday 1 September 2026.
The coldest night of September 2026 in Georgetown, DE: a low of 55°F on Saturday 26 September 2026 and Wednesday 16 September 2026.
The wettest day of September 2026 in Georgetown, DE: 1.11 in on Saturday 26 September 2026.