Islip, NY: July

31 July 2026: July 2026 averaged 74.4°F in Islip, NY, the warmest July since 2025, 32nd warmest of 63.

July 2026

Mean temperature: 74.4°F; Warmest since 2025; 32nd warmest of 63
Precipitation: 7.61 in; Wettest since 1984; 3rd wettest of 63

A normal July in Islip, NY (1991 to 2020): a mean temperature of 75.6°F, between 71°F and 78°F in eight years of ten and 2.97 in of precipitation, between 1.20 in and 6.23 in in eight years of ten.

The mean temperature of every July in Islip, NY since 1964: 74.4°F in 2026; the highest is 78.6°F, in 1999.

Normal range, 71 to 78°F

Every year, ranked, as a table

Every July in Islip, NY from 1964 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
2026	74.4	32	82.4	28	66.4	31	7.61	3
2025	78.5	2	85.7	6	71.4	1	5.64	9
2024	76.9	11	83.8	18	70	4	2.55	38
2023	77	10	84.4	13	69.7	6	7.19	4
2022	77.1	9	85.2	7	69.1	9	1.27	53
2021	74.6	29	81.9	35	67.3	22	5.12	12
2020	77.7	6	85.1	8	70.3	3	5.15	11
2019	78.1	3	86.7	4	69.5	7	3.39	27
2018	75.5	21	83.7	20	67.3	22	2.98	33
2017	75	24	82.9	26	67	25	2.11	45
2016	76.8	12	84.9	10	68.7	12	3.22	31
2015	75.8	18	83.1	24	68.5	14	1.74	51
2014	75.2	23	82.7	27	67.7	20	2.96	34
2013	78	4	85	9	70.9	2	2.34	42
2012	76.2	14	84.3	14	68.2	17	4.80	14
2011	77.6	7	86.5	5	68.8	11	2.69	35
2010	78	4	86.9	2	69.1	9	3.36	28
2009	70.8	59	78.3	61	63.4	58	6.52	6
2008	75.9	15	83.9	17	67.9	18	3.58	23
2007	73.3	45	80.9	45	65.6	42	6.50	7
2006	75.9	15	83.3	23	68.5	14	5.46	10
2005	74.1	33	82	32	66.2	33	2.09	46
2004	72.1	54	79.5	54	64.8	50	2.43	40
2003	73.5	40	81.1	42	65.9	39	2.69	35
2002	75.6	19	84.3	14	66.9	26	1.11	56
2001	70.2	61	79.1	56	61.4	62	1.54	52
2000	70.7	60	78.6	59	62.8	60	4.10	18
1999	78.6	1	87.9	1	69.2	8	0.92	59
1998	75.3	22	84.1	16	66.5	29	1.08	58
1997	74.5	31	83.8	18	65.1	48	3.40	26
1996	71	58	78	62	64.1	55	6.55	5
1995	75.9	15	83.1	24	68.7	12	3.44	24
1994	77.3	8	84.6	12	70	4	1.21	55
1993	75.6	19	84.8	11	66.5	29	1.98	48
1992	71.5	57	79.6	52	63.4	58	6.20	8
1991	74.8	28	83.7	20	65.9	39	2.22	44
1990	74	34	81.1	42	66.9	26	3.33	29
1989	72.7	50	80.2	51	65.2	47	4.90	13
1988	75	24	82	32	67.9	18	2.45	39
1987	74.9	27	82.1	29	67.7	20	1.90	50
1986	73.3	45	80.3	50	66.4	31	4.18	17
1985	73.4	42	80.6	49	66.1	34	3.41	25
1984	71.8	55	78.5	60	65.1	48	8.36	1
1983	75	24	83.4	22	66.7	28	3.26	30
1982	73.4	42	81.4	40	65.4	45	2.27	43
1981	73.5	40	81.6	37	65.5	44	2.58	37
1980	74.6	29	82	32	67.3	22	1.96	49
1979	72.6	52	80.7	46	64.4	54	0.75	61
1978	69.8	63	77.2	63	62.3	61	3.82	19
1977	73.9	35	82.1	29	65.6	42	1.25	54
1976	72.9	48	81.3	41	64.5	53	3.01	32
1975	73.9	35	81.6	37	66.1	34	3.70	21
1974	73	47	82.1	29	63.9	57	0.66	62
1973	73.6	38	81.8	36	65.3	46	4.25	16
1972	73.8	37	81.5	39	66	36	0.88	60
1971	72.7	50	80.7	46	64.6	52	3.62	22
1970	73.4	42	80.7	46	66	36	1.99	47
1969	72.8	49	79.6	52	66	36	7.67	2
1968	72.6	52	81.1	42	64	56	1.09	57
1967	73.6	38	78.9	57	68.3	16	4.44	15
1966	76.3	13	86.8	3	65.8	41	0.59	63
1965	70.2	61	79.3	55	61.2	63	2.36	41
1964	71.8	55	78.8	58	64.8	50	3.75	20

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1999	78.6
2025	78.5
2019	78.1
2013	78
2010	78
2020	77.7
2011	77.6
1994	77.3
2022	77.1
2023	77

Coldest
Year	Mean, °F
1978	69.8
2001	70.2
1965	70.2
2000	70.7
2009	70.8
1996	71
1992	71.5
1984	71.8
1964	71.8
2004	72.1

Wettest
Year	Precipitation, in
1984	8.36
1969	7.67
2026	7.61
2023	7.19
1996	6.55
2009	6.52
2007	6.50
1992	6.20
2025	5.64
2006	5.46

Driest
Year	Precipitation, in
1966	0.59
1974	0.66
1979	0.75
1972	0.88
1999	0.92
1998	1.08
1968	1.09
2002	1.11
1994	1.21
1977	1.25

The hottest, coldest and wettest days

Hottest day: 98°F; 3 July 2026
Coldest night: 58°F; 26 July 2026, 24 July 2026
Wettest day: 2.50 in; 6 July 2026

Every month, season and year

Months

Seasons

Years

Islip, NY the day's answers

All-time records

Every answer in words

July 2026 brought 7.61 in of precipitation in Islip, NY, the wettest July since 1984, 3rd wettest of 63.
The hottest day of July 2026 in Islip, NY: 98°F on Friday 3 July 2026.
The coldest night of July 2026 in Islip, NY: a low of 58°F on Sunday 26 July 2026 and Friday 24 July 2026.
The wettest day of July 2026 in Islip, NY: 2.50 in on Monday 6 July 2026.