CDUS41 KOKX 180645 CLIISP CLIMATE REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 245 AM EDT MON MAY 18 2026 ................................... ...THE ISLIP NY CLIMATE SUMMARY FOR MAY 17 2026... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1963 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 84 MM 85 1974 69 15 75 MINIMUM 57 MM 40 1967 51 6 61 1983 1984 AVERAGE 71 60 11 68 PRECIPITATION (IN) YESTERDAY 0.00 1.94 1990 0.10 -0.10 0.01 MONTH TO DATE 0.70 1.74 -1.04 2.27 SINCE MAR 1 7.04 10.31 -3.27 9.01 SINCE JAN 1 13.28 17.26 -3.98 13.33 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE MAR 1 0.2 7.1 -6.9 0.0 SINCE JUL 1 61.8 31.8 30.0 11.7 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 6 -6 0 MONTH TO DATE 138 135 3 38 SINCE MAR 1 1288 1375 -87 1011 SINCE JUL 1 5144 5094 50 4493 COOLING YESTERDAY 6 1 5 3 MONTH TO DATE 6 4 2 9 SINCE MAR 1 17 6 11 9 SINCE JAN 1 17 6 11 9 ................................................................... WIND (MPH) HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM AVERAGE WIND SPEED 8.2 SKY COVER AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 87 500 AM LOWEST 40 1100 AM AVERAGE 64 .......................................................... THE ISLIP NY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 69 89 19772017 MINIMUM TEMPERATURE (F) 51 38 2003 2023 SUNRISE AND SUNSET MAY 18 2026...........SUNRISE 532 AM EDT SUNSET 806 PM EDT MAY 19 2026...........SUNRISE 532 AM EDT SUNSET 807 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$