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Almanac · Islip, NY · Climate Almanac
📖 Climate Almanac

Islip, NY

40.794°N, 73.102°W · station ISPthr · 1963–2026 · 64 years of record

The Almanac Ribbon

Every day of the year at Islip: the record high and record low ever set (outer lines), the everyday normal range (shaded band), and the full record envelope behind it.
-20020406080100JanFebMarAprMayJunJulAugSepOctNovDechottestsince.com · coldestsince.com
Record high Record low Normal high–low band (1991–2020) hottest ever 104°F · coldest ever -14°F

Records by Month

MonthRecord highRecord low
Jan69°Jan 29, 2002-8°Jan 18, 1965
Feb71°Feb 16, 2023-14°Feb 13, 1967
Mar82°Mar 13, 19900°Mar 18, 1967
Apr94°Apr 17, 200216°Apr 1, 1969
May98°May 20, 199632°May 1, 2008
Jun101°Jun 24, 202542°Jun 1, 1967
Jul104°Jul 3, 196649°Jul 2, 1965
Aug100°Aug 2, 197545°Aug 31, 1965
Sep94°Sep 3, 197338°Sep 24, 1963
Oct89°Oct 2, 201923°Oct 31, 1966
Nov80°Nov 7, 202211°Nov 24, 1989
Dec77°Dec 7, 1998-1°Dec 31, 1963
All-time104°Jul 3, 1966-14°Feb 13, 1967

Longest-Standing Records

The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Islip on hottestsince.com; lows on coldestsince.com.

Oldest-standing record highs

DateRecordSetStanding
Oct 1580°196363yrs
Oct 1680°196363yrs
Oct 1878°196363yrs
Oct 2076°196363yrs
Oct 2374°196363yrs
Oct 2476°196363yrs
Oct 2680°196363yrs
Apr 1885°196462yrs
Nov 1369°196462yrs
May 1083°196561yrs
Sep 1785°196561yrs
Jan 163°196660yrs

Oldest-standing record lows

DateRecordSetStanding
Sep 2242°196363yrs
Sep 2338°196363yrs
Sep 2438°196363yrs
Sep 2540°196363yrs
Dec 197°196363yrs
Dec 291°196363yrs
Dec 30-1°196363yrs
Apr 119°196462yrs
Apr 220°196462yrs
May 436°196462yrs
Jun 543°196462yrs
Jun 643°196462yrs

All-Time Extremes

Hottest ever

104°F
1966-07-03

Coldest ever

-14°F
1967-02-13

Longest heat streak

7 days
≥ 90°F · ended 1973-09-03

The Warming Trend

Islip's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
1964: 51.0°F (-2.2 vs 1991–2020)1965: 49.8°F (-3.4 vs 1991–2020)1966: 51.4°F (-1.8 vs 1991–2020)1967: 49.7°F (-3.5 vs 1991–2020)1968: 49.4°F (-3.8 vs 1991–2020)1969: 51.7°F (-1.5 vs 1991–2020)1970: 51.5°F (-1.7 vs 1991–2020)1971: 52.6°F (-0.6 vs 1991–2020)1972: 51.7°F (-1.5 vs 1991–2020)1973: 53.5°F (+0.3 vs 1991–2020)1974: 51.9°F (-1.3 vs 1991–2020)1975: 52.5°F (-0.7 vs 1991–2020)1976: 51.0°F (-2.2 vs 1991–2020)1977: 51.6°F (-1.6 vs 1991–2020)1978: 49.8°F (-3.4 vs 1991–2020)1979: 51.7°F (-1.5 vs 1991–2020)1980: 52.9°F (-0.3 vs 1991–2020)1981: 52.0°F (-1.2 vs 1991–2020)1982: 52.3°F (-0.9 vs 1991–2020)1983: 52.9°F (-0.3 vs 1991–2020)1984: 52.3°F (-0.9 vs 1991–2020)1985: 52.3°F (-0.9 vs 1991–2020)1986: 51.9°F (-1.3 vs 1991–2020)1987: 52.0°F (-1.2 vs 1991–2020)1988: 51.4°F (-1.8 vs 1991–2020)1989: 51.1°F (-2.1 vs 1991–2020)1990: 54.3°F (+1.1 vs 1991–2020)1991: 54.3°F (+1.1 vs 1991–2020)1992: 51.0°F (-2.2 vs 1991–2020)1993: 52.2°F (-1.0 vs 1991–2020)1994: 52.5°F (-0.7 vs 1991–2020)1995: 53.2°F (+0.0 vs 1991–2020)1996: 51.4°F (-1.8 vs 1991–2020)1997: 52.3°F (-0.9 vs 1991–2020)1998: 55.1°F (+1.9 vs 1991–2020)1999: 54.4°F (+1.2 vs 1991–2020)2000: 51.3°F (-1.9 vs 1991–2020)2001: 53.0°F (-0.2 vs 1991–2020)2002: 53.7°F (+0.5 vs 1991–2020)2003: 51.4°F (-1.8 vs 1991–2020)2004: 51.3°F (-1.9 vs 1991–2020)2005: 52.4°F (-0.8 vs 1991–2020)2006: 54.1°F (+0.9 vs 1991–2020)2007: 52.7°F (-0.5 vs 1991–2020)2008: 53.1°F (-0.1 vs 1991–2020)2009: 51.9°F (-1.3 vs 1991–2020)2010: 54.1°F (+0.9 vs 1991–2020)2011: 54.3°F (+1.1 vs 1991–2020)2012: 55.3°F (+2.1 vs 1991–2020)2013: 53.1°F (-0.1 vs 1991–2020)2014: 52.6°F (-0.6 vs 1991–2020)2015: 53.6°F (+0.4 vs 1991–2020)2016: 54.8°F (+1.6 vs 1991–2020)2017: 54.2°F (+1.0 vs 1991–2020)2018: 53.7°F (+0.5 vs 1991–2020)2019: 53.5°F (+0.3 vs 1991–2020)2020: 55.0°F (+1.8 vs 1991–2020)2021: 54.8°F (+1.6 vs 1991–2020)2022: 54.4°F (+1.2 vs 1991–2020)2023: 55.5°F (+2.3 vs 1991–2020)2024: 55.3°F (+2.1 vs 1991–2020)2025: 54.8°F (+1.6 vs 1991–2020)19642025annual mean temperature · warmer ▲ redder

Days Above / Below the Mark

9 days ≥90°F in 2026 · normal 7 · record 18 in 1999
67 days ≤32°F in 2026 · normal 98 · record 129 in 1967

The Full Record

Every day of the year, record and normal high & low with the year each record was set. Type to filter, click a column to sort.
Show me the data — the full daily record
DateRec HighYrNorm HiNorm LoRec LowYr
Jan 163°196641°26°6°2018
Jan 258°202241°26°3°1968
Jan 363°200041°26°7°2001
Jan 465°202341°26°0°2014
Jan 563°199341°26°8°1968
Jan 668°200741°26°1°1968
Jan 761°201241°26°2°2018
Jan 859°199841°26°-1°1968
Jan 964°200840°26°-4°1968
Jan 1060°201640°26°0°1968
Jan 1160°197540°25°1°1988
Jan 1268°202040°25°-4°1981
Jan 1360°199540°25°5°1981
Jan 1467°199539°24°-4°1988
Jan 1566°199539°24°-7°1988
Jan 1660°199539°24°1°2004
Jan 1755°199939°24°-3°1965
Jan 1860°197339°24°-8°1965
Jan 1956°197239°24°1°1994
Jan 2056°201338°23°2°1994
Jan 2158°197438°23°-3°1984
Jan 2255°196738°23°-7°1984
Jan 2358°201838°23°-1°1970
Jan 2466°196738°23°4°2011
Jan 2557°202438°23°5°2004
Jan 2658°196738°23°7°1991
Jan 2766°197439°23°5°1994
Jan 2861°200239°23°3°1977
Jan 2969°200239°23°3°2005
Jan 3062°200640°24°2°1965
Jan 3157°201340°24°0°2026
Feb 164°201640°24°4°1971
Feb 259°197340°23°7°1971
Feb 364°199140°24°6°1971
Feb 466°199140°24°-1°1965
Feb 567°199140°24°1°1978
Feb 660°200840°24°4°1993
Feb 754°202040°24°2°1966
Feb 862°201740°24°-2°1967
Feb 953°202340°24°5°1967
Feb 1062°202340°24°-1°1979
Feb 1158°200940°24°-2°1979
Feb 1262°202240°24°-6°1979
Feb 1356°200840°24°-14°1967
Feb 1460°199041°24°-1°1979
Feb 1557°198441°25°3°1994
Feb 1671°202341°25°3°2015
Feb 1768°197642°26°0°1979
Feb 1861°198142°26°-2°1979
Feb 1965°201742°26°5°1967
Feb 2064°201842°26°2°2015
Feb 2163°200242°27°2°1968
Feb 2266°199143°27°7°1968
Feb 2368°202243°27°10°2015
Feb 2464°201743°27°3°2015
Feb 2565°197643°28°8°1967
Feb 2658°202543°28°7°1970
Feb 2766°197643°28°8°1967
Feb 2867°197644°28°8°1978
Feb 2962°197244°28°10°1980
Mar 160°199744°28°5°1967
Mar 266°199144°28°9°2015
Mar 364°202444°28°5°2009
Mar 463°197445°28°9°2009
Mar 560°202545°29°12°1978
Mar 668°198745°29°9°2003
Mar 769°198746°29°8°1990
Mar 868°202646°30°12°2007
Mar 968°201646°30°10°2005
Mar 1073°201646°30°11°1984
Mar 1167°202147°30°17°1996
Mar 1282°199047°30°13°2017
Mar 1370°202047°31°17°1993
Mar 1469°201248°31°14°1993
Mar 1573°202448°31°16°1967
Mar 1670°200348°32°8°1967
Mar 1777°201148°32°0°1967
Mar 1869°201048°32°0°1967
Mar 1971°201049°32°15°1967
Mar 2071°201249°33°16°1986
Mar 2172°201250°33°20°1986
Mar 2273°201250°33°19°1967
Mar 2375°201250°34°15°2004
Mar 2467°200051°34°16°1974
Mar 2578°202151°35°12°1974
Mar 2678°199851°35°22°1975
Mar 2779°199152°35°18°1966
Mar 2882°202552°36°22°1982
Mar 2972°199852°36°22°1970
Mar 3073°199953°36°24°1969
Mar 3172°202654°36°16°1969
Apr 172°196754°37°19°1964
Apr 280°196754°37°20°1964
Apr 375°201055°37°23°2008
Apr 468°201255°38°24°1995
Apr 578°202355°38°23°1982
Apr 685°201056°38°23°1982
Apr 784°199156°38°24°1968
Apr 882°201356°39°26°1972
Apr 977°199157°39°25°1975
Apr 1074°200857°39°26°2007
Apr 1187°197758°40°27°2000
Apr 1284°202358°40°27°1976
Apr 1384°202359°40°28°1975
Apr 1481°202659°41°28°1973
Apr 1588°200259°41°26°1981
Apr 1694°200260°42°30°1971
Apr 1790°197660°42°30°2020
Apr 1885°196460°42°27°1965
Apr 1982°200561°43°28°1965
Apr 2083°197661°43°30°1965
Apr 2176°197661°43°29°1975
Apr 2283°197361°43°31°1982
Apr 2376°200761°44°32°2002
Apr 2477°200862°44°30°1965
Apr 2588°200962°44°34°2002
Apr 2681°199062°45°32°2002
Apr 2786°199063°45°35°1972
Apr 2885°201763°45°29°1972
Apr 2982°202463°45°32°1968
Apr 3084°200164°46°33°1992
May 187°200164°46°32°2008
May 285°200164°46°33°1966
May 391°200165°47°35°1967
May 479°201565°47°36°1964
May 588°198665°47°35°1969
May 685°200066°48°35°1970
May 788°200066°48°33°1974
May 886°200066°48°34°1968
May 985°197066°48°34°2020
May 1083°196567°49°34°1966
May 1187°199167°49°37°1969
May 1283°200467°49°37°2005
May 1386°199167°49°34°1987
May 1481°199168°49°34°1996
May 1586°199868°50°40°1968
May 1685°197468°50°39°2000
May 1789°197769°50°38°2003
May 1889°201769°51°37°2002
May 1993°202669°51°39°1992
May 2098°199670°51°35°1992
May 2190°199670°52°37°2002
May 2292°199271°52°42°2006
May 2390°199271°53°41°1965
May 2492°199171°53°42°1965
May 2592°201072°54°41°1972
May 2688°197572°54°37°1992
May 2790°199172°54°36°1968
May 2895°196973°55°42°1972
May 2995°198773°55°41°1970
May 3093°202273°55°41°1990
May 3190°198873°56°42°1967
Jun 190°198874°56°44°1971
Jun 286°199974°56°44°1976
Jun 388°197174°57°42°1976
Jun 488°201075°57°46°1990
Jun 590°202175°57°43°1964
Jun 694°199975°58°43°1964
Jun 795°199975°58°45°1977
Jun 892°198475°58°48°1975
Jun 995°200875°58°46°1975
Jun 1094°200876°59°48°1969
Jun 1194°202676°59°43°1972
Jun 1293°201776°60°42°1972
Jun 1392°198877°60°49°1976
Jun 1492°198877°60°46°1978
Jun 1595°198878°61°46°1997
Jun 1690°202278°61°48°2009
Jun 1789°201478°62°49°1964
Jun 1896°199478°62°49°1986
Jun 1993°199579°62°50°1970
Jun 2091°201279°62°51°1970
Jun 2195°201279°63°47°1968
Jun 2294°201280°63°51°1992
Jun 23101°202580°64°48°1992
Jun 2498°202580°64°52°1985
Jun 2593°199781°64°50°1986
Jun 2693°200381°64°48°1965
Jun 2791°201081°64°50°1995
Jun 2895°199181°65°49°1995
Jun 2993°201282°65°53°1968
Jun 3095°201882°65°55°1988
Jul 199°196682°66°49°1965
Jul 2104°196682°66°51°2001
Jul 397°196682°66°52°1979
Jul 4102°199982°66°53°1971
Jul 5101°201082°66°52°1979
Jul 696°201082°66°53°1965
Jul 795°201283°66°54°1979
Jul 895°198183°66°55°1969
Jul 998°199383°66°53°2009
Jul 1094°196683°67°53°2009
Jul 1195°196684°67°55°2002
Jul 1292°196684°67°51°1973
Jul 1394°199784°67°57°1999
Jul 1497°199584°67°56°1999
Jul 1595°198384°67°55°1966
Jul 1694°199784°67°56°1966
Jul 1798°199984°67°58°1971
Jul 1895°197784°67°59°2001
Jul 1997°199184°68°57°2000
Jul 20101°199184°68°52°1974
Jul 21100°201184°68°53°1974
Jul 2297°201184°68°53°1974
Jul 2396°201083°68°57°1974
Jul 2494°198783°68°55°2002
Jul 2593°200583°68°55°1978
Jul 2694°199983°68°55°1975
Jul 2796°199983°68°56°1977
Jul 2896°200283°68°58°1978
Jul 2996°202583°68°55°1968
Jul 3095°198883°67°52°1968
Jul 3195°199983°67°58°1964
Aug 1100°197583°67°58°1964
Aug 298°200683°67°55°1992
Aug 391°198983°67°53°1964
Aug 494°201083°67°51°1964
Aug 590°197783°67°52°1972
Aug 697°200183°67°49°1972
Aug 796°200182°67°55°1964
Aug 8100°200182°67°51°2004
Aug 994°198082°67°54°1964
Aug 1093°200582°67°51°1964
Aug 1191°201682°66°49°1972
Aug 1292°200282°66°50°1968
Aug 1393°201682°66°54°1987
Aug 1497°201682°66°50°1964
Aug 1590°197081°66°48°1964
Aug 1691°199781°66°50°1972
Aug 1792°200281°66°52°1979
Aug 1891°200281°65°55°1977
Aug 1994°198381°65°54°1968
Aug 2094°199581°65°47°1977
Aug 2191°201981°65°49°1982
Aug 2291°198981°65°52°1975
Aug 2392°202281°64°49°1971
Aug 2492°196981°64°47°1971
Aug 2592°202180°64°50°1977
Aug 2694°202180°64°52°1989
Aug 2795°197380°64°49°1986
Aug 2892°198080°64°46°1986
Aug 2996°197380°63°45°1986
Aug 3094°197380°63°45°1965
Aug 3193°201080°63°49°1968
Sep 192°197380°63°49°1991
Sep 294°197379°63°47°1992
Sep 392°201879°63°49°1975
Sep 491°202379°62°49°1989
Sep 592°202378°62°49°1965
Sep 692°199878°62°49°1988
Sep 791°201578°61°46°1988
Sep 887°200277°61°45°1986
Sep 991°201677°61°39°1975
Sep 1092°198377°60°45°1969
Sep 1190°200576°60°45°1993
Sep 1289°200576°59°48°1973
Sep 1384°197676°59°41°1975
Sep 1486°197676°59°40°1975
Sep 1588°199875°58°46°2001
Sep 1687°199175°58°44°1964
Sep 1785°196574°58°43°1986
Sep 1885°198374°57°44°1990
Sep 1987°198374°57°38°1979
Sep 2082°198974°57°43°1973
Sep 2185°197073°56°38°1997
Sep 2291°198073°56°42°1963
Sep 2389°201772°56°38°1963
Sep 2487°201072°55°38°1963
Sep 2585°197072°55°40°1963
Sep 2686°199871°55°38°1965
Sep 2784°202571°54°38°1989
Sep 2881°201571°54°41°1965
Sep 2982°198670°54°39°1976
Sep 3083°198670°53°40°1992
Oct 189°201970°53°36°1997
Oct 280°196869°52°34°2003
Oct 383°202369°52°33°1974
Oct 483°200268°52°31°1965
Oct 586°199768°51°30°1965
Oct 681°200768°50°32°1968
Oct 788°200767°50°34°1999
Oct 885°201167°50°30°2001
Oct 984°199767°50°32°1988
Oct 1078°199066°49°31°1993
Oct 1180°199566°48°34°1964
Oct 1280°199566°48°28°1964
Oct 1381°199065°48°31°1993
Oct 1481°199065°47°33°1979
Oct 1580°196364°47°33°1978
Oct 1680°196364°47°34°1965
Oct 1777°196864°46°31°1965
Oct 1878°196363°46°27°1974
Oct 1984°201663°45°27°1976
Oct 2076°196363°45°29°1974
Oct 2177°197962°45°27°1974
Oct 2282°202462°44°30°1997
Oct 2374°196362°44°25°1969
Oct 2476°196361°44°30°1974
Oct 2576°202361°44°30°1969
Oct 2680°196361°43°30°2006
Oct 2783°202360°43°30°1976
Oct 2875°197160°43°30°1970
Oct 2972°198459°42°26°1966
Oct 3077°201659°42°23°1966
Oct 3180°202459°42°26°1975
Nov 180°202458°41°27°1965
Nov 278°199058°41°25°1976
Nov 376°199058°40°27°1980
Nov 474°202257°40°24°1965
Nov 574°202257°40°25°1965
Nov 680°202257°40°26°2012
Nov 774°202056°39°24°1993
Nov 876°202056°39°23°2019
Nov 974°202055°38°21°1965
Nov 1069°202055°38°22°2004
Nov 1172°202255°38°25°2001
Nov 1266°201254°37°21°2019
Nov 1369°196454°37°19°1986
Nov 1477°199354°37°19°1967
Nov 1570°200153°37°17°1967
Nov 1666°200653°36°15°1967
Nov 1769°198752°36°24°1996
Nov 1866°201652°36°22°2014
Nov 1966°198552°36°21°1986
Nov 2065°199152°36°18°1987
Nov 2165°202052°36°18°2018
Nov 2264°198252°35°13°1989
Nov 2370°199251°35°11°1989
Nov 2467°197951°35°17°2000
Nov 2566°201151°35°19°1993
Nov 2666°202051°35°19°1991
Nov 2768°201150°34°21°1982
Nov 2866°199150°34°20°1996
Nov 2964°200150°34°20°1989
Nov 3067°200149°33°17°1965
Dec 160°198549°33°12°1989
Dec 267°199849°33°14°1966
Dec 373°199848°32°8°1976
Dec 470°200148°32°13°1966
Dec 567°199847°32°13°2002
Dec 677°199847°31°8°2002
Dec 760°197446°31°15°1970
Dec 866°199146°31°16°1964
Dec 961°201546°30°8°1968
Dec 1065°197145°30°6°1968
Dec 1168°201545°30°5°1968
Dec 1268°201544°30°5°1982
Dec 1363°202044°29°5°1982
Dec 1462°201544°29°8°1976
Dec 1564°197144°30°11°1968
Dec 1660°202144°30°10°1968
Dec 1762°198444°30°15°1988
Dec 1859°198444°29°9°1989
Dec 1958°199944°29°7°1963
Dec 2060°201844°29°10°2004
Dec 2161°201344°28°9°1989
Dec 2264°201543°28°8°1989
Dec 2364°201543°28°6°1983
Dec 2465°201543°28°3°1983
Dec 2564°198243°28°4°1980
Dec 2662°197343°28°5°1968
Dec 2762°201643°27°3°1966
Dec 2856°200843°27°5°2004
Dec 2965°198442°27°1°1963
Dec 3061°202442°27°-1°1963
Dec 3159°199242°26°13°1976
Forecast & records → Islip station On This Day → national almanac
Data: NOAA/NWS Threaded Extremes (threadex) · normals 1991–2020 · part of Weather Trader