Climatological Report (Annual)
Issued by NWS Upton, NY

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479 CXUS51 KOKX 012218 CLAISP CLIMATE REPORT NATIONAL WEATHER SERVICE NEW YORK NY 518 PM EST FRI JAN 1 2016 ................................... ...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2015... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1986 TO 2015 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 102 07/05/1999 LOW -7 01/15/1988 01/22/1984 HIGHEST 94 07/20 MM MM 89 06/18 LOWEST 2 02/21 MM MM 0 01/04 02/20 AVG. MAXIMUM 61.8 60.3 1.5 60.6 AVG. MINIMUM 45.1 44.3 0.8 44.3 MEAN 53.4 52.3 1.1 52.5 DAYS MAX >= 90 7 4.8 2.2 0 DAYS MAX <= 32 26 18.3 7.7 27 DAYS MIN <= 32 94 97.9 -3.9 108 DAYS MIN <= 0 0 0.1 -0.1 1 PRECIPITATION (INCHES) RECORD MAXIMUM 65.32 1989 MINIMUM 34.41 1985 TOTALS 38.60 46.24 -7.64 57.35 DAILY AVG. 0.11 0.13 -0.02 0.16 DAYS >= .01 110 118.9 -8.9 130 DAYS >= .10 66 75.2 -9.2 77 DAYS >= .50 29 30.5 -1.5 35 DAYS >= 1.00 10 11.8 -1.8 11 GREATEST 24 HR. TOTAL 2.30 MM 12/31 TO 12/31 12/31 TO 12/31 12/31 TO 12/31 STORM TOTAL MM MM (MM/DD(HH)) MM 12/31(00) TO 12/31(00) 12/31(00) TO 12/31(00)1 12/31(00) TO 12/31(00)1 SNOWFALL (INCHES) RECORDS TOTAL MM MM 24 HR TOTAL 17.4 MM SNOW DEPTH MM MM TOTALS 63.3 24.8 38.5 55.7 LIQUID EQUIV 6.33 2.50 3.83 5.57 SINCE 7/1 T 5.9 -5.9 0.4 LIQUID 7/1 MM 0.60 MM 0.04 SNOWDEPTH AVG. 2 MM MM 1 DAYS >= TRACE 39 12.3 26.7 40 DAYS >= 1.0 12 7.5 4.5 13 GREATEST SNOW DEPTH 24 01/28 11 01/23 01/04 01/22 24 HR TOTAL 17.4R MM 12/31 TO 12/31 12/31 TO 12/31 12/31 TO 12/31 STORM TOTAL MM MM (MM/DD(HH)) MM 12/31(00) TO 12/31(00) 12/31(00) TO 12/31(00)1 12/31(00) TO 12/31(00)1 DEGREE_DAYS HEATING TOTAL 5122 5426 -304 5332 SINCE 7/1 MM 1927 MM MM COOLING TOTAL 1069 787 282 887 SINCE 1/1 1069 787 282 887 .................................................. WIND (MPH) AVERAGE WIND SPEED 9.2 RESULTANT WIND SPEED/DIRECTION 2/276 HIGHEST WIND SPEED/DIRECTION 41/300 DATE 03/17 HIGHEST GUST SPEED/DIRECTION 56/340 DATE 02/15 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.60 NUMBER OF DAYS FAIR 87 NUMBER OF DAYS PC 168 NUMBER OF DAYS CLOUDY 110 AVERAGE RH (PERCENT) 67 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 1 HEAVY RAIN 26 RAIN 43 LIGHT RAIN 112 FREEZING RAIN 0 LT FREEZING RAIN 9 HAIL 0 HEAVY SNOW 5 SNOW 13 LIGHT SNOW 32 SLEET 9 FOG 148 FOG W/VIS <= 1/4 MILE 38 HAZE 60 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$

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