Islip, NY: 2026

9 October 2026: 2026 so far averaged 55.7°F in Islip, NY, the warmest 1 January to 9 October since 2025, 26th warmest of 63.

2026 so far, to 9 October 2026

Mean temperature: 55.7°F; Warmest since 2025; 26th warmest of 63
Precipitation: 40.63 in; Wettest since 2018; 10th wettest of 63

A normal 1 January to 9 October in Islip, NY (1991 to 2020): a mean temperature of 55.9°F, between 53.7°F and 57.5°F in eight years of ten and 33.58 in of precipitation, between 26.74 in and 43.09 in in eight years of ten.

The mean temperature of every 1 January to 9 October in Islip, NY since 1964: 55.7°F in 2026; the highest is 58.3°F, in 2012.

Normal range, 53.7 to 57.5°F

Every year, ranked, as a table

Every 1 January 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	55.7	26	63.7	26	47.7	23	40.63	10	0
2025	57.8	3	65.9	6	49.8	4	25.61	57	0
2024	57.8	3	65.5	10	50.2	1	39.21	17	0
2023	58.1	2	66.3	2	49.9	2	37.73	21	0
2022	56.8	14	65.3	12	48.3	14	30.47	42	0
2021	56.9	12	64.9	14	49	7	37.54	22	0
2020	57.5	6	65.5	10	49.4	5	29.43	47	0
2019	56.4	17	64.5	16	48.2	15	33.76	29	0
2018	56.7	15	64.5	16	48.9	10	44.38	6	0
2017	56.9	12	65	13	48.9	10	32.90	36	0
2016	57.4	8	65.8	8	49	7	26.86	54	0
2015	54.6	35	62.9	35	46.3	37	29.72	46	0
2014	54.6	35	63	33	46.2	41	43.08	8	0
2013	55.8	23	63.9	23	47.7	23	30.47	42	0
2012	58.3	1	66.6	1	49.9	2	34.93	25	0
2011	56.2	19	64.4	19	48.1	19	41.27	9	0
2010	57.5	6	65.9	6	49	7	33.39	32	0
2009	54.1	46	62	49	46.3	37	36.93	23	0
2008	56	21	64.5	16	47.5	25	39.95	14	0
2007	55.3	27	63.6	28	46.9	28	33.38	33	0
2006	56.1	20	64.3	20	47.9	20	40.63	10	0
2005	55	28	63.5	29	46.6	31	22.53	62	0
2004	53.6	54	61.6	55	45.7	53	31.71	38	0
2003	53.3	57	60.9	57	45.6	54	40.03	13	0
2002	57.2	9	65.8	8	48.6	12	29.35	48	0
2001	54.7	32	63.2	32	46.2	41	33.86	28	0
2000	54.4	39	62.8	37	46	45	38.25	20	0
1999	57	11	66.1	3	47.9	20	39.31	16	0
1998	57.7	5	66	5	49.4	5	52.91	1	0
1997	54.8	31	63.7	26	45.9	48	31.31	39	0
1996	53.7	52	61.5	56	46	45	43.13	7	0
1995	56.5	16	64.8	15	48.2	15	25.65	56	0
1994	54.1	46	62.3	45	45.8	51	30.93	41	0
1993	55	28	63.3	31	46.8	30	25.21	58	0
1992	53.3	57	61.9	51	44.8	58	34.38	27	0
1991	57.1	10	66.1	3	48.2	15	33.03	35	0
1990	56.3	18	64.1	22	48.4	13	50.35	3	0
1989	54.7	32	62.5	41	46.9	28	52.49	2	0
1988	54.2	45	62	49	46.4	35	27.16	51	0
1987	54.5	38	62.6	39	46.5	34	31.12	40	0
1986	54.6	35	62.6	39	46.6	31	24.51	61	0
1985	54.7	32	62.4	43	47.1	27	27.03	53	0
1984	53.7	52	60.9	57	46.6	31	47.76	4	0
1983	55.8	23	63.4	30	48.2	15	40.44	12	0
1982	54	48	61.9	51	46.1	43	34.48	26	0
1981	54.3	43	62.4	43	46.3	37	26.48	55	0
1980	55.8	23	63.8	24	47.8	22	27.62	50	0
1979	53.5	56	60.7	59	46.3	37	45.73	5	0
1978	51.5	63	59.3	63	43.7	61	39.73	15	1
1977	54	48	62.1	48	45.9	48	32.17	37	0
1976	54.9	30	63.8	24	46	45	33.26	34	0
1975	54.4	39	63	33	45.9	48	38.37	19	1
1974	54.4	39	62.9	35	45.8	51	30.15	44	0
1973	55.9	22	64.2	21	47.5	25	33.58	30	0
1972	53.9	51	62.2	47	45.6	54	39.05	18	0
1971	54.3	43	62.5	41	46.1	43	29.84	45	0
1970	53.6	54	61.7	53	45.6	54	27.08	52	0
1969	54.4	39	62.3	45	46.4	35	33.50	31	0
1968	51.7	62	60.7	59	42.8	63	25.03	59	0
1967	52.3	60	60	62	44.6	60	36.56	24	0
1966	54	48	62.7	38	45.3	57	29.35	48	0
1965	52	61	60.6	61	43.3	62	22.19	63	0
1964	53.2	59	61.7	53	44.7	59	25.01	60	0
1963									247

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2012	58.3
2023	58.1
2025	57.8
2024	57.8
1998	57.7
2020	57.5
2010	57.5
2016	57.4
2002	57.2
1991	57.1

Coldest
Year	Mean, °F
1978	51.5
1968	51.7
1965	52
1967	52.3
1964	53.2
2003	53.3
1992	53.3
1979	53.5
2004	53.6
1970	53.6

Wettest
Year	Precipitation, in
1998	52.91
1989	52.49
1990	50.35
1984	47.76
1979	45.73
2018	44.38
1996	43.13
2014	43.08
2011	41.27
2026	40.63
More years share the last value

Driest
Year	Precipitation, in
1965	22.19
2005	22.53
1986	24.51
1964	25.01
1968	25.03
1993	25.21
2025	25.61
1995	25.65
1981	26.48
2016	26.86

The hottest, coldest and wettest days

Hottest day: 98°F; 3 July 2026
Coldest night: 0°F; 31 January 2026
Wettest day: 3.27 in; 20 August 2026

Month by month

Month	Mean temperature	Precipitation
January	29.6°F 25th coldest of 63	2.58 in 22nd driest of 63
February	27.9°F 8th coldest of 63	3.66 in 25th wettest of 63
March	41.6°F 19th warmest of 63	4.19 in 28th wettest of 63
April	50.8°F 15th warmest of 63	2.15 in 12th driest of 63
May	60.1°F 22nd warmest of 63	2.68 in 21st driest of 63
June	71.1°F 7th warmest of 63	0.82 in 4th driest of 63
July	74.4°F 32nd warmest of 63	7.61 in 3rd wettest of 63
August	75.1°F 11th warmest of 63	7.94 in 6th wettest of 63
September	67.4°F 17th warmest of 63	8.76 in Wettest of 63
October so far	61.4°F 18th warmest of 64	0.24 in 18th driest of 64

Hot days and freezes

Islip, NY has had 9 days at 90°F or above in 2026 through 9 October, the most by that date since 2025, tied 20th most of 63 (with 1995, 1983 and 1973).
Islip, NY has had 67 freezing nights (a low of 32°F or below) in 2026 through 9 October, the most by that date since 2021, tied 38th most of 63 (with 1996, 1988, 1984 and 1 other year).
The last freeze of spring 2026 in Islip, NY came on Monday 20 April 2026, the latest since 2015, tied 13th latest of 63 (with 2001 and 1974).

Daily records set

Date	Record	Value	Before	Check
12 June	Warmest day	94°F	91°F 2017	Provisional
15 April	Warmest day	81°F	78°F 2024, 2002	Provisional
1 April	Warmest day	72°F	67°F 1999	Provisional
31 January	Coldest night	0°F	3°F 2019	Provisional

Daily records set and not listed: 0

Every month, season and year

Months

Seasons

Years

2025
2026

Islip, NY the day's answers

All-time records

Every answer in words

2026 so far brought 40.63 in of precipitation in Islip, NY, the wettest 1 January to 9 October since 2018, tied 10th wettest of 63 (with 2006).
The hottest day of 2026 so far in Islip, NY: 98°F on Friday 3 July 2026.
The coldest night of 2026 so far in Islip, NY: a low of 0°F on Saturday 31 January 2026.
The wettest day of 2026 so far in Islip, NY: 3.27 in on Thursday 20 August 2026.