Islip, NY: Fall

9 October 2026: Fall 2026 so far averaged 66°F in Islip, NY, the warmest 1 September to 9 October since 2025, tied 17th warmest of 63 (with 1990).

Fall 2026 so far, to 9 October 2026

Mean temperature: 66°F; Warmest since 2025; 17th warmest of 63
Precipitation: 9.00 in; Wettest on record; Wettest of 63, provisional

A normal 1 September to 9 October in Islip, NY (1991 to 2020): a mean temperature of 65.1°F, between 62.9°F and 67.9°F in eight years of ten and 4.16 in of precipitation, between 1.88 in and 6.92 in in eight years of ten.

The mean temperature of every 1 September to 9 October in Islip, NY since 1964: 66°F in 2026; the highest is 69.3°F, in 2018.

Normal range, 62.9 to 67.9°F

Every year, ranked, as a table

Every 1 September to 9 October in Islip, NY from 1963 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	66	17	73.3	31	58.7	14	9.00	1	0
2025	68.3	3	77.1	2	59.5	7	1.83	54	0
2024	65.7	20	74.2	20	57.3	20	0.34	63	0
2023	67.4	9	74.9	11	59.8	4	7.20	9	0
2022	65.6	22	73.8	23	57.4	19	6.02	17	0
2021	68.2	5	76	7	60.5	2	5.25	23	0
2020	65.2	25	73.8	23	56.7	27	3.91	34	0
2019	65.9	19	74.6	14	57.1	24	1.38	61	0
2018	69.3	1	75.4	8	63.2	1	5.97	18	0
2017	68.3	3	76.3	4	60.3	3	4.55	30	0
2016	67	11	74.6	14	59.3	9	4.42	31	0
2015	67.9	6	76.5	3	59.4	8	7.36	8	0
2014	65.7	20	73.5	27	57.8	17	2.52	49	0
2013	65	29	74.5	16	55.5	39	1.91	52	0
2012	65.2	25	73.1	33	57.2	21	3.87	37	0
2011	66.8	12	74.5	16	59	11	5.08	24	0
2010	66.2	15	74.3	19	58.1	16	3.14	43	0
2009	63.1	46	71.8	41	54.5	49	3.86	38	0
2008	65.3	24	73.1	33	57.5	18	8.09	5	0
2007	67.7	7	76.3	4	59	11	1.66	57	0
2006	63.2	45	71.5	44	55	43	5.30	21	0
2005	69.2	2	78.7	1	59.8	4	2.98	45	0
2004	64.2	34	73.1	33	55.2	41	6.37	14	0
2003	63.8	38	71.9	39	55.6	38	3.52	42	0
2002	66.5	13	74.8	12	58.2	15	4.63	29	0
2001	62.9	49	72.2	38	53.6	56	3.02	44	0
2000	62.7	51	71.5	44	53.8	54	4.89	26	0
1999	64.1	35	72.5	36	55.8	34	6.49	13	0
1998	66.1	16	75.1	10	57.2	21	2.91	46	0
1997	64.9	30	74	21	55.7	35	1.42	60	0
1996	63.4	41	71.7	43	55	43	8.21	3	0
1995	64.9	30	73.5	27	56.3	31	6.87	10	0
1994	62.5	53	71.2	46	53.8	54	3.71	39	0
1993	63.3	44	71	48	55.7	35	4.40	32	0
1992	62.1	55	70.2	53	54	52	3.89	35	0
1991	63.4	41	71.8	41	55	43	4.86	27	0
1990	66	17	74.7	13	57.2	21	3.68	40	0
1989	62.6	52	70.8	49	54.3	50	6.23	15	0
1988	61.8	57	69.6	58	53.9	53	5.28	22	0
1987	62.3	54	70.1	55	54.6	48	4.73	28	0
1986	63	48	71.2	46	54.7	46	1.63	58	0
1985	65.2	25	73.5	27	56.9	26	1.82	55	0
1984	60.3	63	68.6	63	52	62	5.84	20	0
1983	67.2	10	75.4	8	58.9	13	2.19	50	0
1982	65.5	23	73.8	23	57.1	24	1.28	62	0
1981	62.9	49	70.1	55	55.7	35	5.05	25	0
1980	67.6	8	76.1	6	59.2	10	2.84	48	0
1979	63.1	46	70.2	53	56.1	33	6.19	16	0
1978	61	61	69.1	62	52.9	59	8.54	2	0
1977	63.4	41	70.1	55	56.7	27	6.73	11	0
1976	63.5	40	71.9	39	55.1	42	4.40	32	0
1975	60.4	62	69.3	60	51.6	63	6.57	12	0
1974	61.2	60	69.6	58	52.8	60	5.95	19	0
1973	64.5	33	74.4	18	54.7	46	1.88	53	0
1972	64.9	30	73.4	30	56.3	31	7.62	6	0
1971	66.4	14	73.2	32	59.6	6	3.89	35	0
1970	65.1	28	73.7	26	56.6	30	2.09	51	0
1969	63.9	37	72.5	36	55.4	40	7.50	7	0
1968	64.1	35	74	21	54.2	51	2.89	47	0
1967	63.8	38	70.8	49	56.7	27	1.57	59	0
1966	61.7	58	70.6	51	52.8	60	8.17	4	0
1965	61.4	59	69.3	60	53.4	58	1.80	56	0
1964	61.9	56	70.4	52	53.5	57	3.66	41	0
1963									4

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2018	69.3
2005	69.2
2025	68.3
2017	68.3
2021	68.2
2015	67.9
2007	67.7
1980	67.6
2023	67.4
1983	67.2

Coldest
Year	Mean, °F
1984	60.3
1975	60.4
1978	61
1974	61.2
1965	61.4
1966	61.7
1988	61.8
1964	61.9
1992	62.1
1987	62.3

Wettest
Year	Precipitation, in
2026	9.00
1978	8.54
1996	8.21
1966	8.17
2008	8.09
1972	7.62
1969	7.50
2015	7.36
2023	7.20
1995	6.87

Driest
Year	Precipitation, in
2024	0.34
1982	1.28
2019	1.38
1997	1.42
1967	1.57
1986	1.63
2007	1.66
1965	1.80
1985	1.82
2025	1.83

The hottest, coldest and wettest days

Hottest day: 86°F; 10 September 2026
Coldest night: 39°F; 7 October 2026
Wettest day: 3.06 in; 13 September 2026

Every month, season and year

Months

Seasons

Years

Islip, NY the day's answers

All-time records

Every answer in words

Fall 2026 so far brought 9.00 in of precipitation in Islip, NY, the wettest 1 September to 9 October on record, in 63 years since 1964; provisional.
The hottest day of fall 2026 so far in Islip, NY: 86°F on Thursday 10 September 2026.
The coldest night of fall 2026 so far in Islip, NY: a low of 39°F on Wednesday 7 October 2026.
The wettest day of fall 2026 so far in Islip, NY: 3.06 in on Sunday 13 September 2026.