Islip, NY

40.794°N, 73.102°W · station ISPthr · 1963–2026 · 64 years · normal 46.1 in/yr

The Accumulation Ribbon

Every day of the year at Islip: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (1989) and driest (1965) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 46.1 in

All-Time Extremes

Driest year

25.3in

1965 · mean 45.0 in

Longest dry streak

32 days

< 0.01 in · ended 1966-07-18

Wettest day ever

13.51in

Aug 13, 2014

Wettest year

65.3in

1989 · mean 45.0 in

Longest wet streak

18 days

≥ 0.01 in · ended 2019-05-07

Wettest month ever

14.07in

Oct 2005

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	3.61″ Jan 3, 1999	3.37″	10.30″ 1979
Feb	2.42″ Feb 25, 2010	3.21″	6.21″ 2008
Mar	3.25″ Mar 9, 1998	3.94″	9.54″ 2024
Apr	4.63″ Apr 23, 2006	3.72″	9.09″ 1983
May	4.01″ May 16, 1989	3.36″	10.14″ 1989
Jun	4.87″ Jun 6, 2000	2.81″	10.80″ 2003
Jul	4.65″ Jul 16, 2023	2.99″	8.36″ 1984
Aug	13.51″ Aug 13, 2014	3.69″	14.07″ 2014
Sep	3.12″ Sep 15, 1966	3.28″	7.50″ 1966
Oct	5.38″ Oct 14, 2005	3.39″	14.07″ 2005
Nov	2.63″ Nov 20, 1988	3.17″	8.42″ 2018
Dec	3.04″ Dec 28, 2023	4.50″	8.91″ 1996

Record Daily Rainfall

The heaviest one-day rainfall ever recorded on each calendar date — when Islip's big rains fall.

Year by Year

Driest years

1965	25.27 in
1985	34.41 in
1980	34.61 in
2016	34.99 in
1964	35.78 in

The Full Record

Every day of the year: normal daily precip, the record one-day total with its year, how often it rains, and the cumulative normal. Type to filter, click a column to sort.

Show me the data — the full daily record

Date	Normal	Record 1-day	Yr	Wet-day %	Cum. normal
Jan 1	0.13″	1.38″	2007	48%	0.13″
Jan 2	0.12″	1.63″	1979	33%	0.25″
Jan 3	0.13″	3.61″	1999	40%	0.38″
Jan 4	0.13″	2.05″	1982	44%	0.51″
Jan 5	0.13″	0.80″	1993	37%	0.64″
Jan 6	0.13″	0.84″	1966	38%	0.77″
Jan 7	0.13″	1.56″	2009	35%	0.90″
Jan 8	0.13″	1.95″	2007	37%	1.02″
Jan 9	0.13″	1.25″	2024	41%	1.15″
Jan 10	0.13″	1.72″	2016	29%	1.28″
Jan 11	0.13″	0.87″	2014	35%	1.41″
Jan 12	0.12″	1.43″	1991	30%	1.54″
Jan 13	0.13″	1.67″	1979	33%	1.66″
Jan 14	0.13″	1.33″	2006	38%	1.79″
Jan 15	0.12″	1.76″	1999	33%	1.91″
Jan 16	0.12″	1.09″	1991	29%	2.03″
Jan 17	0.13″	1.48″	2022	29%	2.16″
Jan 18	0.13″	0.84″	1987	44%	2.29″
Jan 19	0.12″	1.06″	2023	44%	2.42″
Jan 20	0.12″	1.93″	1978	35%	2.54″
Jan 21	0.13″	2.92″	1979	29%	2.66″
Jan 22	0.12″	1.62″	1987	21%	2.78″
Jan 23	0.11″	2.20″	1998	33%	2.89″
Jan 24	0.11″	1.61″	1965	33%	3.00″
Jan 25	0.11″	1.32″	1978	35%	3.11″
Jan 26	0.10″	0.98″	1978	37%	3.21″
Jan 27	0.11″	1.44″	2015	30%	3.32″
Jan 28	0.11″	1.17″	1994	33%	3.43″
Jan 29	0.11″	1.25″	1990	29%	3.54″
Jan 30	0.12″	0.72″	2001	27%	3.66″
Jan 31	0.10″	0.37″	1982	27%	3.76″
Feb 1	0.10″	1.72″	2008	32%	3.86″
Feb 2	0.10″	2.01″	1999	40%	3.96″
Feb 3	0.10″	1.28″	1972	46%	4.06″
Feb 4	0.10″	1.18″	2018	30%	4.17″
Feb 5	0.10″	1.09″	1997	34%	4.27″
Feb 6	0.11″	1.75″	2004	32%	4.38″
Feb 7	0.12″	1.91″	1967	41%	4.50″
Feb 8	0.12″	2.21″	2013	35%	4.62″
Feb 9	0.12″	2.00″	1969	22%	4.74″
Feb 10	0.12″	1.70″	1970	24%	4.86″
Feb 11	0.12″	1.58″	2018	29%	4.98″
Feb 12	0.12″	2.09″	1988	33%	5.10″
Feb 13	0.11″	2.22″	2008	37%	5.21″
Feb 14	0.11″	1.05″	2007	29%	5.32″
Feb 15	0.11″	1.02″	1970	37%	5.43″
Feb 16	0.11″	1.44″	1993	40%	5.54″
Feb 17	0.12″	0.96″	2003	38%	5.66″
Feb 18	0.13″	0.93″	1999	32%	5.79″
Feb 19	0.12″	2.15″	1972	32%	5.91″
Feb 20	0.12″	0.71″	1981	29%	6.03″
Feb 21	0.12″	2.32″	1989	38%	6.14″
Feb 22	0.11″	1.93″	2003	37%	6.26″
Feb 23	0.13″	1.98″	2026	40%	6.39″
Feb 24	0.13″	1.31″	1998	41%	6.52″
Feb 25	0.13″	2.42″	2010	43%	6.65″
Feb 26	0.13″	2.11″	1979	32%	6.78″
Feb 27	0.13″	1.04″	2013	29%	6.91″
Feb 28	0.14″	2.33″	1984	29%	7.05″
Feb 29	0.14″	1.08″	1987	38%	7.19″
Mar 1	0.15″	3.11″	2018	33%	7.34″
Mar 2	0.15″	1.65″	2024	37%	7.48″
Mar 3	0.14″	1.12″	1971	35%	7.62″
Mar 4	0.14″	1.33″	2025	38%	7.76″
Mar 5	0.15″	2.97″	1979	40%	7.91″
Mar 6	0.15″	2.83″	1967	46%	8.06″
Mar 7	0.15″	2.06″	2008	29%	8.22″
Mar 8	0.16″	3.25″	1998	30%	8.37″
Mar 9	0.14″	1.22″	1994	35%	8.51″
Mar 10	0.13″	1.45″	1964	33%	8.65″
Mar 11	0.13″	2.60″	2000	33%	8.78″
Mar 12	0.14″	2.42″	2010	32%	8.92″
Mar 13	0.15″	2.49″	1984	40%	9.07″
Mar 14	0.15″	1.47″	1999	29%	9.22″
Mar 15	0.14″	1.66″	1974	33%	9.36″
Mar 16	0.13″	1.15″	2025	31%	9.49″
Mar 17	0.13″	0.97″	1972	34%	9.62″
Mar 18	0.13″	1.92″	1998	27%	9.75″
Mar 19	0.12″	1.08″	2002	35%	9.87″
Mar 20	0.12″	2.00″	1974	43%	9.98″
Mar 21	0.12″	1.44″	1967	32%	10.11″
Mar 22	0.13″	0.75″	1980	25%	10.24″
Mar 23	0.14″	2.27″	2024	27%	10.38″
Mar 24	0.15″	0.80″	1969	21%	10.52″
Mar 25	0.15″	1.28″	1973	37%	10.67″
Mar 26	0.15″	2.16″	1988	25%	10.82″
Mar 27	0.14″	1.29″	2005	32%	10.97″
Mar 28	0.14″	2.68″	2014	40%	11.10″
Mar 29	0.13″	2.49″	2001	37%	11.24″
Mar 30	0.13″	2.52″	1987	38%	11.37″
Mar 31	0.13″	1.78″	1998	44%	11.50″
Apr 1	0.14″	2.01″	1970	44%	11.64″
Apr 2	0.14″	2.05″	1982	46%	11.78″
Apr 3	0.14″	1.36″	2007	43%	11.92″
Apr 4	0.14″	1.06″	1980	43%	12.06″
Apr 5	0.13″	2.07″	1971	41%	12.20″
Apr 6	0.13″	1.27″	1964	40%	12.33″
Apr 7	0.13″	1.47″	1973	33%	12.45″
Apr 8	0.12″	1.46″	1998	38%	12.58″
Apr 9	0.12″	2.21″	1983	38%	12.70″
Apr 10	0.12″	1.62″	1980	29%	12.82″
Apr 11	0.12″	1.82″	2007	35%	12.94″
Apr 12	0.12″	1.01″	1994	32%	13.06″
Apr 13	0.12″	3.69″	2004	29%	13.18″
Apr 14	0.14″	1.91″	1964	38%	13.32″
Apr 15	0.15″	3.19″	1983	41%	13.48″
Apr 16	0.15″	2.31″	1996	38%	13.63″
Apr 17	0.15″	0.92″	1969	25%	13.78″
Apr 18	0.16″	0.79″	1983	33%	13.94″
Apr 19	0.15″	1.01″	2009	30%	14.09″
Apr 20	0.15″	1.72″	1991	25%	14.24″
Apr 21	0.14″	3.44″	2000	35%	14.38″
Apr 22	0.15″	4.63″	2006	37%	14.53″
Apr 23	0.14″	1.29″	1977	43%	14.68″
Apr 24	0.14″	1.31″	1968	46%	14.82″
Apr 25	0.14″	1.97″	1973	37%	14.96″
Apr 26	0.15″	1.53″	1979	38%	15.11″
Apr 27	0.15″	2.08″	1997	35%	15.25″
Apr 28	0.14″	2.08″	1980	29%	15.40″
Apr 29	0.13″	2.21″	2014	27%	15.53″
Apr 30	0.11″	0.83″	1998	33%	15.64″
May 1	0.12″	0.74″	2012	46%	15.76″
May 2	0.12″	1.73″	1985	33%	15.88″
May 3	0.11″	1.08″	1975	40%	15.99″
May 4	0.12″	0.99″	2019	35%	16.11″
May 5	0.11″	1.23″	1991	44%	16.23″
May 6	0.11″	1.16″	1967	29%	16.34″
May 7	0.10″	1.12″	1994	35%	16.44″
May 8	0.10″	2.20″	1998	48%	16.54″
May 9	0.11″	1.76″	1989	38%	16.65″
May 10	0.11″	0.71″	1967	37%	16.76″
May 11	0.12″	1.74″	2006	32%	16.88″
May 12	0.11″	1.32″	2017	32%	16.99″
May 13	0.11″	1.23″	1978	33%	17.10″
May 14	0.11″	0.64″	1967	30%	17.21″
May 15	0.11″	4.01″	1989	38%	17.32″
May 16	0.10″	1.94″	1990	38%	17.42″
May 17	0.10″	1.60″	2002	33%	17.53″
May 18	0.11″	2.33″	1966	40%	17.64″
May 19	0.10″	1.73″	2023	41%	17.74″
May 20	0.10″	1.47″	1972	33%	17.84″
May 21	0.11″	1.46″	2025	35%	17.95″
May 22	0.11″	1.31″	1979	35%	18.06″
May 23	0.10″	1.97″	1978	41%	18.16″
May 24	0.11″	1.16″	1997	37%	18.27″
May 25	0.11″	2.85″	2003	32%	18.38″
May 26	0.11″	0.74″	1983	27%	18.49″
May 27	0.12″	1.55″	2021	35%	18.61″
May 28	0.13″	1.95″	1990	37%	18.74″
May 29	0.13″	1.02″	2021	27%	18.87″
May 30	0.15″	2.25″	1984	30%	19.02″
May 31	0.15″	2.64″	2003	40%	19.18″
Jun 1	0.15″	1.35″	1997	37%	19.33″
Jun 2	0.14″	1.83″	1984	51%	19.47″
Jun 3	0.14″	2.27″	2003	43%	19.62″
Jun 4	0.16″	4.09″	1982	27%	19.77″
Jun 5	0.17″	3.52″	1992	32%	19.94″
Jun 6	0.17″	4.87″	2000	35%	20.11″
Jun 7	0.17″	0.71″	1980	27%	20.28″
Jun 8	0.15″	2.59″	1989	35%	20.44″
Jun 9	0.16″	1.48″	2013	22%	20.60″
Jun 10	0.15″	0.36″	2019	24%	20.75″
Jun 11	0.14″	3.45″	1998	30%	20.89″
Jun 12	0.14″	3.98″	1998	37%	21.04″
Jun 13	0.14″	1.75″	2012	37%	21.18″
Jun 14	0.12″	1.34″	1989	21%	21.30″
Jun 15	0.12″	1.31″	1985	33%	21.42″
Jun 16	0.12″	2.83″	2001	30%	21.54″
Jun 17	0.12″	2.13″	1967	32%	21.66″
Jun 18	0.13″	1.66″	1967	40%	21.80″
Jun 19	0.12″	1.54″	1996	33%	21.92″
Jun 20	0.11″	0.96″	2003	37%	22.02″
Jun 21	0.10″	1.25″	1973	30%	22.12″
Jun 22	0.10″	1.08″	1972	32%	22.22″
Jun 23	0.10″	1.87″	2017	24%	22.33″
Jun 24	0.09″	3.25″	1981	19%	22.42″
Jun 25	0.09″	4.14″	2012	29%	22.51″
Jun 26	0.09″	0.72″	1973	35%	22.59″
Jun 27	0.09″	1.62″	1983	30%	22.68″
Jun 28	0.08″	1.50″	1990	27%	22.77″
Jun 29	0.08″	1.08″	1990	38%	22.85″
Jun 30	0.08″	1.26″	2025	37%	22.93″
Jul 1	0.08″	1.10″	1986	35%	23.01″
Jul 2	0.08″	0.99″	1978	30%	23.09″
Jul 3	0.07″	1.56″	1978	33%	23.16″
Jul 4	0.07″	1.87″	1989	30%	23.23″
Jul 5	0.07″	2.50″	2026	25%	23.30″
Jul 6	0.08″	0.98″	1969	17%	23.38″
Jul 7	0.08″	1.51″	1984	29%	23.46″
Jul 8	0.09″	2.16″	2021	19%	23.55″
Jul 9	0.09″	1.73″	1964	27%	23.64″
Jul 10	0.11″	0.90″	1965	29%	23.74″
Jul 11	0.10″	1.26″	2006	19%	23.85″
Jul 12	0.10″	0.84″	2004	29%	23.94″
Jul 13	0.10″	2.91″	1996	34%	24.04″
Jul 14	0.10″	0.77″	1973	21%	24.14″
Jul 15	0.11″	4.65″	2023	23%	24.25″
Jul 16	0.12″	1.34″	2018	26%	24.37″
Jul 17	0.12″	3.34″	2007	32%	24.49″
Jul 18	0.12″	0.76″	1971	21%	24.60″
Jul 19	0.12″	0.83″	1981	24%	24.73″
Jul 20	0.12″	0.85″	2009	26%	24.85″
Jul 21	0.12″	2.69″	1984	24%	24.97″
Jul 22	0.12″	2.23″	2009	35%	25.09″
Jul 23	0.12″	0.94″	1983	31%	25.20″
Jul 24	0.12″	1.26″	1975	37%	25.33″
Jul 25	0.11″	1.69″	1985	31%	25.44″
Jul 26	0.11″	2.41″	2000	24%	25.55″
Jul 27	0.11″	3.75″	1969	34%	25.66″
Jul 28	0.12″	2.98″	2012	34%	25.78″
Jul 29	0.11″	1.00″	2016	19%	25.89″
Jul 30	0.10″	2.93″	2025	21%	25.99″
Jul 31	0.10″	2.20″	1996	32%	26.09″
Aug 1	0.10″	1.12″	1986	27%	26.19″
Aug 2	0.10″	1.36″	1987	26%	26.30″
Aug 3	0.11″	1.55″	1979	35%	26.41″
Aug 4	0.11″	1.79″	1994	26%	26.52″
Aug 5	0.14″	1.70″	1979	27%	26.66″
Aug 6	0.15″	2.80″	2024	35%	26.81″
Aug 7	0.16″	1.79″	2021	24%	26.97″
Aug 8	0.15″	3.11″	1976	23%	27.12″
Aug 9	0.16″	2.84″	1976	29%	27.28″
Aug 10	0.18″	3.76″	1989	40%	27.46″
Aug 11	0.19″	2.26″	1978	32%	27.65″
Aug 12	0.19″	13.51″	2014	34%	27.84″
Aug 13	0.20″	5.32″	2011	21%	28.04″
Aug 14	0.20″	2.01″	1969	27%	28.24″
Aug 15	0.20″	1.95″	2012	26%	28.44″
Aug 16	0.19″	2.40″	1992	29%	28.63″
Aug 17	0.19″	1.91″	2017	32%	28.82″
Aug 18	0.18″	5.91″	1991	27%	29.00″
Aug 19	0.18″	2.61″	2001	26%	29.18″
Aug 20	0.15″	1.31″	1997	29%	29.33″
Aug 21	0.14″	2.21″	1977	34%	29.47″
Aug 22	0.14″	2.05″	1970	23%	29.61″
Aug 23	0.13″	6.74″	1990	24%	29.74″
Aug 24	0.12″	2.13″	1985	24%	29.85″
Aug 25	0.11″	0.92″	1999	24%	29.96″
Aug 26	0.09″	2.19″	2006	23%	30.05″
Aug 27	0.09″	2.01″	2021	33%	30.14″
Aug 28	0.08″	2.72″	2002	26%	30.22″
Aug 29	0.08″	0.54″	1974	19%	30.30″
Aug 30	0.09″	0.65″	1981	21%	30.39″
Aug 31	0.09″	1.53″	2021	27%	30.48″
Sep 1	0.09″	1.44″	1974	26%	30.57″
Sep 2	0.10″	0.80″	1978	31%	30.68″
Sep 3	0.11″	2.23″	1984	21%	30.78″
Sep 4	0.10″	1.65″	2012	14%	30.88″
Sep 5	0.09″	1.69″	2017	27%	30.98″
Sep 6	0.10″	2.29″	2008	17%	31.08″
Sep 7	0.11″	0.68″	1998	21%	31.18″
Sep 8	0.12″	2.40″	2004	21%	31.30″
Sep 9	0.12″	2.30″	2015	30%	31.42″
Sep 10	0.12″	2.75″	2020	21%	31.54″
Sep 11	0.12″	3.00″	1978	21%	31.67″
Sep 12	0.12″	1.82″	1971	25%	31.79″
Sep 13	0.12″	1.44″	1973	32%	31.91″
Sep 14	0.11″	3.12″	1966	25%	32.02″
Sep 15	0.12″	2.59″	2000	30%	32.14″
Sep 16	0.11″	1.46″	1995	22%	32.26″
Sep 17	0.11″	2.85″	1996	24%	32.37″
Sep 18	0.11″	0.90″	1978	25%	32.48″
Sep 19	0.12″	1.61″	1972	22%	32.60″
Sep 20	0.13″	2.16″	1966	24%	32.73″
Sep 21	0.13″	1.32″	1994	30%	32.86″
Sep 22	0.13″	1.69″	1975	35%	33.00″
Sep 23	0.12″	1.23″	2021	27%	33.12″
Sep 24	0.12″	1.69″	1975	27%	33.25″
Sep 25	0.12″	1.52″	1989	25%	33.37″
Sep 26	0.12″	2.39″	2008	33%	33.48″
Sep 27	0.12″	1.10″	2003	38%	33.60″
Sep 28	0.12″	2.15″	2023	33%	33.71″
Sep 29	0.11″	2.08″	1979	30%	33.82″
Sep 30	0.10″	0.71″	2010	35%	33.93″
Oct 1	0.12″	1.64″	2015	25%	34.04″
Oct 2	0.11″	3.91″	1969	37%	34.15″
Oct 3	0.12″	1.57″	1976	29%	34.27″
Oct 4	0.12″	1.80″	1995	22%	34.39″
Oct 5	0.12″	2.30″	1978	16%	34.51″
Oct 6	0.14″	0.44″	2005	16%	34.65″
Oct 7	0.13″	4.53″	1972	25%	34.78″
Oct 8	0.13″	1.97″	1977	22%	34.91″
Oct 9	0.14″	1.40″	1971	30%	35.04″
Oct 10	0.13″	2.47″	2006	30%	35.18″
Oct 11	0.13″	3.30″	2005	30%	35.31″
Oct 12	0.14″	1.29″	1990	30%	35.45″
Oct 13	0.15″	5.38″	2005	29%	35.60″
Oct 14	0.15″	0.61″	2009	22%	35.75″
Oct 15	0.15″	2.65″	1974	21%	35.90″
Oct 16	0.14″	1.06″	1991	24%	36.05″
Oct 17	0.14″	2.05″	1990	25%	36.19″
Oct 18	0.13″	2.38″	1966	33%	36.32″
Oct 19	0.13″	3.90″	1989	27%	36.45″
Oct 20	0.13″	1.51″	1995	24%	36.58″
Oct 21	0.13″	0.95″	1988	21%	36.71″
Oct 22	0.13″	2.44″	1990	30%	36.84″
Oct 23	0.13″	1.84″	1983	27%	36.97″
Oct 24	0.12″	0.93″	1997	32%	37.09″
Oct 25	0.13″	4.47″	2021	30%	37.22″
Oct 26	0.12″	1.58″	2019	29%	37.34″
Oct 27	0.12″	2.12″	2006	21%	37.46″
Oct 28	0.12″	4.02″	2017	30%	37.58″
Oct 29	0.12″	2.60″	2025	21%	37.70″
Oct 30	0.12″	1.59″	1989	27%	37.82″
Oct 31	0.12″	1.16″	1976	25%	37.94″
Nov 1	0.13″	2.05″	1988	30%	38.07″
Nov 2	0.13″	1.00″	1979	30%	38.20″
Nov 3	0.12″	2.24″	1992	24%	38.32″
Nov 4	0.11″	2.04″	1985	30%	38.43″
Nov 5	0.10″	0.71″	1963	32%	38.53″
Nov 6	0.10″	2.49″	1963	27%	38.64″
Nov 7	0.10″	1.93″	1977	24%	38.74″
Nov 8	0.11″	1.25″	2018	29%	38.85″
Nov 9	0.11″	1.99″	1983	39%	38.96″
Nov 10	0.11″	2.03″	1968	29%	39.07″
Nov 11	0.11″	1.74″	1975	49%	39.17″
Nov 12	0.10″	1.68″	1968	38%	39.28″
Nov 13	0.10″	1.04″	1995	27%	39.38″
Nov 14	0.11″	2.61″	1972	32%	39.49″
Nov 15	0.10″	1.15″	1983	38%	39.59″
Nov 16	0.11″	1.59″	2014	27%	39.70″
Nov 17	0.11″	0.59″	1994	30%	39.81″
Nov 18	0.11″	1.81″	1968	24%	39.92″
Nov 19	0.12″	1.05″	1981	32%	40.04″
Nov 20	0.12″	2.63″	1988	37%	40.16″
Nov 21	0.12″	2.26″	2024	38%	40.28″
Nov 22	0.12″	1.37″	2006	27%	40.40″
Nov 23	0.12″	1.38″	1992	37%	40.52″
Nov 24	0.12″	1.48″	1980	35%	40.64″
Nov 25	0.13″	1.38″	1977	43%	40.77″
Nov 26	0.13″	1.75″	2013	41%	40.89″
Nov 27	0.14″	1.93″	1993	27%	41.03″
Nov 28	0.14″	2.33″	1971	30%	41.17″
Nov 29	0.14″	1.68″	2016	33%	41.31″
Nov 30	0.14″	1.41″	1977	37%	41.46″
Dec 1	0.15″	2.20″	1974	37%	41.61″
Dec 2	0.15″	1.41″	1967	35%	41.76″
Dec 3	0.15″	0.96″	1983	21%	41.91″
Dec 4	0.15″	2.45″	1964	41%	42.06″
Dec 5	0.16″	1.46″	2020	43%	42.22″
Dec 6	0.17″	1.87″	1996	29%	42.39″
Dec 7	0.17″	1.64″	1996	30%	42.56″
Dec 8	0.17″	2.14″	2014	37%	42.72″
Dec 9	0.17″	1.59″	2023	37%	42.89″
Dec 10	0.17″	0.99″	2023	43%	43.06″
Dec 11	0.17″	2.65″	1992	32%	43.24″
Dec 12	0.17″	1.86″	2008	41%	43.41″
Dec 13	0.17″	1.62″	1977	43%	43.57″
Dec 14	0.16″	1.55″	2013	37%	43.74″
Dec 15	0.17″	1.09″	1974	35%	43.91″
Dec 16	0.16″	1.49″	2024	38%	44.07″
Dec 17	0.17″	1.65″	2023	35%	44.24″
Dec 18	0.16″	1.41″	2012	22%	44.40″
Dec 19	0.15″	1.34″	1995	32%	44.55″
Dec 20	0.14″	1.81″	1973	43%	44.69″
Dec 21	0.14″	1.43″	1969	41%	44.83″
Dec 22	0.14″	1.63″	2015	40%	44.97″
Dec 23	0.14″	1.00″	2014	43%	45.10″
Dec 24	0.13″	1.29″	2002	48%	45.24″
Dec 25	0.13″	1.36″	1975	27%	45.36″
Dec 26	0.12″	0.93″	1969	29%	45.49″
Dec 27	0.13″	3.04″	2023	35%	45.62″
Dec 28	0.13″	1.56″	2013	37%	45.75″
Dec 29	0.13″	1.33″	1971	40%	45.88″
Dec 30	0.12″	1.26″	2018	43%	46.00″
Dec 31	0.12″	0.53″	2024	44%	46.13″

Records & forecast → Islip station Every Day of the Year → national almanac

Data: NOAA/NWS ThreadEx (RCC-ACIS) · normals 1991–2020 (or full record) · part of Weather Trader